docs: use real identifiers in the Godoc examples

Bumps [go.opentelemetry.io/otel/sdk](https://github.com/open-telemetry/opentelemetry-go) from 1.44.0 to 1.45.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-go/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-go/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-telemetry/opentelemetry-go/compare/v1.44.0...v1.45.0)

---
updated-dependencies:
- dependency-name: go.opentelemetry.io/otel/sdk
  dependency-version: 1.45.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.bruno/Chromium/Convert/HTML to PDF.bru

@@ -0,0 +1,86 @@
+meta {
+  name: HTML to PDF
+  type: http
+  seq: 2
+}
+
+post {
+  url: {{baseUrl}}/forms/chromium/convert/html
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../test/integration/testdata/page-1-html/index.html)
+  ~landscape: false
+  ~printBackground: false
+  ~scale: 1.0
+  ~singlePage: false
+  ~paperWidth: 8.5
+  ~paperHeight: 11
+  ~marginTop: 0.39
+  ~marginBottom: 0.39
+  ~marginLeft: 0.39
+  ~marginRight: 0.39
+  ~nativePageRanges: 1-2
+  ~preferCssPageSize: false
+  ~generateDocumentOutline: false
+  ~generateTaggedPdf: false
+  ~skipNetworkIdleEvent: false
+  ~failOnHttpStatusCodes: [499,599]
+  ~failOnResourceHttpStatusCodes: []
+  ~ignoreResourceHttpStatusDomains: []
+  ~failOnResourceLoadingFailed: false
+  ~failOnConsoleExceptions: false
+  ~waitDelay: 0s
+  ~waitWindowStatus:
+  ~waitForExpression:
+  ~waitForSelector:
+  ~cookies: [{"name":"my_cookie","value":"my_value","domain":"example.com"}]
+  ~userAgent:
+  ~extraHttpHeaders: {"X-Custom-Header":"value"}
+  ~emulatedMediaType: print
+  ~emulatedMediaFeatures: {"prefers-color-scheme":"dark"}
+  ~omitBackground: false
+  ~splitMode: intervals
+  ~splitSpan: 1
+  ~splitUnify: false
+  ~pdfa: PDF/A-1b
+  ~pdfua: true
+  ~metadata: {"Author":"Bruno","Title":"Test"}
+  ~userPassword:
+  ~ownerPassword:
+  ~allowPrinting: false
+  ~allowCopying: false
+  ~allowModifying: false
+  ~allowAnnotating: false
+  ~allowFillingForms: false
+  ~allowAssembling: false
+  ~embeds: @file(../test/integration/testdata/embed_1.xml)
+  ~embeds: @file(../test/integration/testdata/embed_2.xml)
+  ~embedsMetadata: {"embed_1.xml":{"mimeType":"text/xml","relationship":"Data"}, "embed_2.xml":{"mimeType":"text/xml","relationship":"Data"}}
+  ~facturxXml: @file(../test/integration/testdata/embed_1.xml)
+  ~facturxConformanceLevel: EN 16931
+  ~facturxDocumentType: INVOICE
+  ~facturxVersion: 1.0
+  ~watermarkSource: text
+  ~watermarkExpression: CONFIDENTIAL
+  ~watermarkPages:
+  ~watermarkOptions: {"scale":"0.5 abs","rot":"45","fillcolor":"#FF0000"}
+  ~stampSource: text
+  ~stampExpression: DRAFT
+  ~stampPages:
+  ~stampOptions: {"scale":"0.5 abs","rot":"45"}
+  ~rotateAngle: 90
+  ~rotatePages:
+}
+
+headers {
+  ~Gotenberg-Output-Filename: my-file
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/Chromium/Convert/Markdown to PDF.bru

@@ -0,0 +1,87 @@
+meta {
+  name: Markdown to PDF
+  type: http
+  seq: 3
+}
+
+post {
+  url: {{baseUrl}}/forms/chromium/convert/markdown
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page-1-markdown/index.html)
+  files: @file(../../test/integration/testdata/page-1-markdown/page_1.md)
+  ~landscape: false
+  ~printBackground: false
+  ~scale: 1.0
+  ~singlePage: false
+  ~paperWidth: 8.5
+  ~paperHeight: 11
+  ~marginTop: 0.39
+  ~marginBottom: 0.39
+  ~marginLeft: 0.39
+  ~marginRight: 0.39
+  ~nativePageRanges: 1-2
+  ~preferCssPageSize: false
+  ~generateDocumentOutline: false
+  ~generateTaggedPdf: false
+  ~skipNetworkIdleEvent: false
+  ~failOnHttpStatusCodes: [499,599]
+  ~failOnResourceHttpStatusCodes: []
+  ~ignoreResourceHttpStatusDomains: []
+  ~failOnResourceLoadingFailed: false
+  ~failOnConsoleExceptions: false
+  ~waitDelay: 0s
+  ~waitWindowStatus:
+  ~waitForExpression:
+  ~waitForSelector:
+  ~cookies: [{"name":"my_cookie","value":"my_value","domain":"example.com"}]
+  ~userAgent:
+  ~extraHttpHeaders: {"X-Custom-Header":"value"}
+  ~emulatedMediaType: print
+  ~emulatedMediaFeatures: {"prefers-color-scheme":"dark"}
+  ~omitBackground: false
+  ~splitMode: intervals
+  ~splitSpan: 1
+  ~splitUnify: false
+  ~pdfa: PDF/A-1b
+  ~pdfua: true
+  ~metadata: {"Author":"Bruno","Title":"Test"}
+  ~userPassword:
+  ~ownerPassword:
+  ~allowPrinting: false
+  ~allowCopying: false
+  ~allowModifying: false
+  ~allowAnnotating: false
+  ~allowFillingForms: false
+  ~allowAssembling: false
+  ~embeds: @file(../test/integration/testdata/embed_1.xml)
+  ~embeds: @file(../test/integration/testdata/embed_2.xml)
+  ~embedsMetadata: {"embed_1.xml":{"mimeType":"text/xml","relationship":"Data"}, "embed_2.xml":{"mimeType":"text/xml","relationship":"Data"}}
+  ~facturxXml: @file(../../test/integration/testdata/embed_1.xml)
+  ~facturxConformanceLevel: EN 16931
+  ~facturxDocumentType: INVOICE
+  ~facturxVersion: 1.0
+  ~watermarkSource: text
+  ~watermarkExpression: CONFIDENTIAL
+  ~watermarkPages:
+  ~watermarkOptions: {"scale":"0.5 abs","rot":"45","fillcolor":"#FF0000"}
+  ~stampSource: text
+  ~stampExpression: DRAFT
+  ~stampPages:
+  ~stampOptions: {"scale":"0.5 abs","rot":"45"}
+  ~rotateAngle: 90
+  ~rotatePages:
+}
+
+headers {
+  ~Gotenberg-Output-Filename: my-file
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/Chromium/Convert/URL to PDF.bru

@@ -0,0 +1,86 @@
+meta {
+  name: URL to PDF
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/chromium/convert/url
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  url: https://example.com
+  ~landscape: false
+  ~printBackground: false
+  ~scale: 1.0
+  ~singlePage: false
+  ~paperWidth: 8.5
+  ~paperHeight: 11
+  ~marginTop: 0.39
+  ~marginBottom: 0.39
+  ~marginLeft: 0.39
+  ~marginRight: 0.39
+  ~nativePageRanges: 1-2
+  ~preferCssPageSize: false
+  ~generateDocumentOutline: false
+  ~generateTaggedPdf: false
+  ~skipNetworkIdleEvent: false
+  ~failOnHttpStatusCodes: [499,599]
+  ~failOnResourceHttpStatusCodes: []
+  ~ignoreResourceHttpStatusDomains: []
+  ~failOnResourceLoadingFailed: false
+  ~failOnConsoleExceptions: false
+  ~waitDelay: 0s
+  ~waitWindowStatus:
+  ~waitForExpression:
+  ~waitForSelector:
+  ~cookies: [{"name":"my_cookie","value":"my_value","domain":"example.com"}]
+  ~userAgent:
+  ~extraHttpHeaders: {"X-Custom-Header":"value"}
+  ~emulatedMediaType: print
+  ~emulatedMediaFeatures: {"prefers-color-scheme":"dark"}
+  ~omitBackground: false
+  ~splitMode: intervals
+  ~splitSpan: 1
+  ~splitUnify: false
+  ~pdfa: PDF/A-1b
+  ~pdfua: true
+  ~metadata: {"Author":"Bruno","Title":"Test"}
+  ~userPassword:
+  ~ownerPassword:
+  ~allowPrinting: false
+  ~allowCopying: false
+  ~allowModifying: false
+  ~allowAnnotating: false
+  ~allowFillingForms: false
+  ~allowAssembling: false
+  ~embeds: @file(../test/integration/testdata/embed_1.xml)
+  ~embeds: @file(../test/integration/testdata/embed_2.xml)
+  ~embedsMetadata: {"embed_1.xml":{"mimeType":"text/xml","relationship":"Data"}, "embed_2.xml":{"mimeType":"text/xml","relationship":"Data"}}
+  ~facturxXml: @file(../test/integration/testdata/embed_1.xml)
+  ~facturxConformanceLevel: EN 16931
+  ~facturxDocumentType: INVOICE
+  ~facturxVersion: 1.0
+  ~watermarkSource: text
+  ~watermarkExpression: CONFIDENTIAL
+  ~watermarkPages:
+  ~watermarkOptions: {"scale":"0.5 abs","rot":"45","fillcolor":"#FF0000"}
+  ~stampSource: text
+  ~stampExpression: DRAFT
+  ~stampPages:
+  ~stampOptions: {"scale":"0.5 abs","rot":"45"}
+  ~rotateAngle: 90
+  ~rotatePages:
+}
+
+headers {
+  ~Gotenberg-Output-Filename: my-file
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/Chromium/Screenshot/HTML Screenshot.bru

@@ -0,0 +1,48 @@
+meta {
+  name: HTML Screenshot
+  type: http
+  seq: 2
+}
+
+post {
+  url: {{baseUrl}}/forms/chromium/screenshot/html
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page-1-html/index.html)
+  ~width: 800
+  ~height: 600
+  ~clip: false
+  ~format: png
+  ~quality: 100
+  ~optimizeForSpeed: false
+  ~skipNetworkIdleEvent: false
+  ~failOnHttpStatusCodes: [499,599]
+  ~failOnResourceHttpStatusCodes: []
+  ~ignoreResourceHttpStatusDomains: []
+  ~failOnResourceLoadingFailed: false
+  ~failOnConsoleExceptions: false
+  ~waitDelay: 0s
+  ~waitWindowStatus:
+  ~waitForExpression:
+  ~waitForSelector:
+  ~cookies: [{"name":"my_cookie","value":"my_value","domain":"example.com"}]
+  ~userAgent:
+  ~extraHttpHeaders: {"X-Custom-Header":"value"}
+  ~emulatedMediaType: screen
+  ~emulatedMediaFeatures: {"prefers-color-scheme":"dark"}
+  ~omitBackground: false
+  ~deviceScaleFactor: 1.0
+}
+
+headers {
+  ~Gotenberg-Output-Filename: my-screenshot
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/Chromium/Screenshot/Markdown Screenshot.bru

@@ -0,0 +1,49 @@
+meta {
+  name: Markdown Screenshot
+  type: http
+  seq: 3
+}
+
+post {
+  url: {{baseUrl}}/forms/chromium/screenshot/markdown
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page-1-markdown/index.html)
+  files: @file(../../test/integration/testdata/page-1-markdown/page_1.md)
+  ~width: 800
+  ~height: 600
+  ~clip: false
+  ~format: png
+  ~quality: 100
+  ~optimizeForSpeed: false
+  ~skipNetworkIdleEvent: false
+  ~failOnHttpStatusCodes: [499,599]
+  ~failOnResourceHttpStatusCodes: []
+  ~ignoreResourceHttpStatusDomains: []
+  ~failOnResourceLoadingFailed: false
+  ~failOnConsoleExceptions: false
+  ~waitDelay: 0s
+  ~waitWindowStatus:
+  ~waitForExpression:
+  ~waitForSelector:
+  ~cookies: [{"name":"my_cookie","value":"my_value","domain":"example.com"}]
+  ~userAgent:
+  ~extraHttpHeaders: {"X-Custom-Header":"value"}
+  ~emulatedMediaType: screen
+  ~emulatedMediaFeatures: {"prefers-color-scheme":"dark"}
+  ~omitBackground: false
+  ~deviceScaleFactor: 1.0
+}
+
+headers {
+  ~Gotenberg-Output-Filename: my-screenshot
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/Chromium/Screenshot/URL Screenshot.bru

@@ -0,0 +1,48 @@
+meta {
+  name: URL Screenshot
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/chromium/screenshot/url
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  url: https://example.com
+  ~width: 800
+  ~height: 600
+  ~clip: false
+  ~format: png
+  ~quality: 100
+  ~optimizeForSpeed: false
+  ~skipNetworkIdleEvent: false
+  ~failOnHttpStatusCodes: [499,599]
+  ~failOnResourceHttpStatusCodes: []
+  ~ignoreResourceHttpStatusDomains: []
+  ~failOnResourceLoadingFailed: false
+  ~failOnConsoleExceptions: false
+  ~waitDelay: 0s
+  ~waitWindowStatus:
+  ~waitForExpression:
+  ~waitForSelector:
+  ~cookies: [{"name":"my_cookie","value":"my_value","domain":"example.com"}]
+  ~userAgent:
+  ~extraHttpHeaders: {"X-Custom-Header":"value"}
+  ~emulatedMediaType: screen
+  ~emulatedMediaFeatures: {"prefers-color-scheme":"dark"}
+  ~omitBackground: false
+  ~deviceScaleFactor: 1.0
+}
+
+headers {
+  ~Gotenberg-Output-Filename: my-screenshot
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/Health & Info/Debug.bru

@@ -0,0 +1,11 @@
+meta {
+  name: Debug
+  type: http
+  seq: 3
+}
+
+get {
+  url: {{baseUrl}}/debug
+  body: none
+  auth: none
+}

.bruno/Health & Info/Health.bru

@@ -0,0 +1,11 @@
+meta {
+  name: Health
+  type: http
+  seq: 1
+}
+
+get {
+  url: {{baseUrl}}/health
+  body: none
+  auth: none
+}

.bruno/Health & Info/Prometheus Metrics.bru

@@ -0,0 +1,11 @@
+meta {
+  name: Prometheus Metrics
+  type: http
+  seq: 4
+}
+
+get {
+  url: {{baseUrl}}/prometheus/metrics
+  body: none
+  auth: none
+}

.bruno/Health & Info/Version.bru

@@ -0,0 +1,11 @@
+meta {
+  name: Version
+  type: http
+  seq: 2
+}
+
+get {
+  url: {{baseUrl}}/version
+  body: none
+  auth: none
+}

.bruno/LibreOffice/Convert to PDF.bru

@@ -0,0 +1,103 @@
+meta {
+  name: Convert to PDF
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/libreoffice/convert
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../test/integration/testdata/page_1.docx)
+  ~password:
+  ~landscape: false
+  ~nativePageRanges:
+  ~updateIndexes: false
+  ~exportFormFields: true
+  ~allowDuplicateFieldNames: false
+  ~exportBookmarks: true
+  ~exportBookmarksToPdfDestination: false
+  ~exportPlaceholders: false
+  ~exportNotes: false
+  ~exportNotesPages: false
+  ~exportOnlyNotesPages: false
+  ~exportNotesInMargin: false
+  ~convertOooTargetToPdfTarget: false
+  ~exportLinksRelativeFsys: false
+  ~exportHiddenSlides: false
+  ~skipEmptyPages: false
+  ~addOriginalDocumentAsStream: false
+  ~singlePageSheets: false
+  ~initialView: 0
+  ~initialPage: 1
+  ~magnification: 0
+  ~zoom: 100
+  ~pageLayout: 0
+  ~firstPageOnLeft: false
+  ~resizeWindowToInitialPage: false
+  ~centerWindow: false
+  ~openInFullScreenMode: false
+  ~displayPDFDocumentTitle: true
+  ~hideViewerMenubar: false
+  ~hideViewerToolbar: false
+  ~hideViewerWindowControls: false
+  ~useTransitionEffects: true
+  ~openBookmarkLevels: -1
+  ~losslessImageCompression: false
+  ~quality: 90
+  ~reduceImageResolution: false
+  ~maxImageResolution: 300
+  ~nativeWatermarkText:
+  ~nativeWatermarkColor: 0
+  ~nativeWatermarkFontHeight: 0
+  ~nativeWatermarkRotateAngle: 0
+  ~nativeWatermarkFontName:
+  ~nativeTiledWatermarkText:
+  ~nativePdfFormats: true
+  ~merge: false
+  ~flatten: false
+  ~splitMode: intervals
+  ~splitSpan: 1
+  ~splitUnify: false
+  ~pdfa: PDF/A-1b
+  ~pdfua: true
+  ~metadata: {"Author":"Bruno","Title":"Test"}
+  ~userPassword:
+  ~ownerPassword:
+  ~allowPrinting: false
+  ~allowCopying: false
+  ~allowModifying: false
+  ~allowAnnotating: false
+  ~allowFillingForms: false
+  ~allowAssembling: false
+  ~embeds: @file(../test/integration/testdata/embed_1.xml)
+  ~embeds: @file(../test/integration/testdata/embed_2.xml)
+  ~embedsMetadata: {"embed_1.xml":{"mimeType":"text/xml","relationship":"Data"}, "embed_2.xml":{"mimeType":"text/xml","relationship":"Data"}}
+  ~facturxXml: @file(../test/integration/testdata/embed_1.xml)
+  ~facturxConformanceLevel: EN 16931
+  ~facturxDocumentType: INVOICE
+  ~facturxVersion: 1.0
+  ~watermarkSource: text
+  ~watermarkExpression: CONFIDENTIAL
+  ~watermarkPages:
+  ~watermarkOptions: {"scale":"0.5 abs","rot":"45","fillcolor":"#FF0000"}
+  ~stampSource: text
+  ~stampExpression: DRAFT
+  ~stampPages:
+  ~stampOptions: {"scale":"0.5 abs","rot":"45"}
+  ~rotateAngle: 90
+  ~rotatePages:
+}
+
+headers {
+  ~Gotenberg-Output-Filename: my-file
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Bookmarks/Read Bookmarks.bru

@@ -0,0 +1,24 @@
+meta {
+  name: Read Bookmarks
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/bookmarks/read
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+}
+
+headers {
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Bookmarks/Write Bookmarks.bru

@@ -0,0 +1,26 @@
+meta {
+  name: Write Bookmarks
+  type: http
+  seq: 2
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/bookmarks/write
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+  bookmarks: [{"title":"Chapter 1","page":1,"children":[{"title":"Section 1.1","page":1}]}]
+}
+
+headers {
+  ~Gotenberg-Output-Filename: with-bookmarks
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Convert/Convert PDF.bru

@@ -0,0 +1,27 @@
+meta {
+  name: Convert PDF
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/convert
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+  pdfa: PDF/A-1b
+  ~pdfua: true
+}
+
+headers {
+  ~Gotenberg-Output-Filename: converted
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Embed/Embed Files.bru

@@ -0,0 +1,33 @@
+meta {
+  name: Embed Files
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/embed
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../test/integration/testdata/page_1.pdf)
+  embeds: @file(../test/integration/testdata/embed_1.xml)
+  embeds: @file(../test/integration/testdata/embed_2.xml)
+  embedsMetadata: {"embed_1.xml":{"mimeType":"text/xml","relationship":"Data"}, "embed_2.xml":{"mimeType":"text/xml","relationship":"Data"}}
+  ~facturxXml: @file(../test/integration/testdata/embed_1.xml)
+  ~facturxConformanceLevel: EN 16931
+  ~facturxDocumentType: INVOICE
+  ~facturxVersion: 1.0
+  ~downloadFrom: [{"url":"https://example.com/attachment.xml","embedded":true}]
+}
+
+headers {
+  ~Gotenberg-Output-Filename: with-embeds
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Encrypt/Encrypt PDF.bru

@@ -0,0 +1,33 @@
+meta {
+  name: Encrypt PDF
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/encrypt
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+  userPassword: secret123
+  ~ownerPassword: owner456
+  ~allowPrinting: false
+  ~allowCopying: false
+  ~allowModifying: false
+  ~allowAnnotating: false
+  ~allowFillingForms: false
+  ~allowAssembling: false
+}
+
+headers {
+  ~Gotenberg-Output-Filename: encrypted
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Factur-X/Inject Factur-X XMP.bru

@@ -0,0 +1,29 @@
+meta {
+  name: Inject Factur-X XMP
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/factur-x
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+  facturxXml: @file(../../test/integration/testdata/embed_1.xml)
+  facturxConformanceLevel: EN 16931
+  ~facturxDocumentType: INVOICE
+  ~facturxVersion: 1.0
+}
+
+headers {
+  ~Gotenberg-Output-Filename: factur-x
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Flatten/Flatten PDF.bru

@@ -0,0 +1,25 @@
+meta {
+  name: Flatten PDF
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/flatten
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+}
+
+headers {
+  ~Gotenberg-Output-Filename: flattened
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Merge/Merge PDFs.bru

@@ -0,0 +1,54 @@
+meta {
+  name: Merge PDFs
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/merge
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+  files: @file(../../test/integration/testdata/page_2.pdf)
+  ~flatten: false
+  ~autoIndexBookmarks: false
+  ~pdfa: PDF/A-1b
+  ~pdfua: true
+  ~metadata: {"Author":"Bruno","Title":"Test"}
+  ~bookmarks: [{"title":"Page 1","page":1},{"title":"Page 2","page":2}]
+  ~userPassword:
+  ~ownerPassword:
+  ~allowPrinting: false
+  ~allowCopying: false
+  ~allowModifying: false
+  ~allowAnnotating: false
+  ~allowFillingForms: false
+  ~allowAssembling: false
+  ~watermarkSource: text
+  ~watermarkExpression: CONFIDENTIAL
+  ~watermarkPages:
+  ~watermarkOptions: {"scale":"0.5 abs","rot":"45","fillcolor":"#FF0000"}
+  ~stampSource: text
+  ~stampExpression: DRAFT
+  ~stampPages:
+  ~stampOptions: {"scale":"0.5 abs","rot":"45"}
+  ~rotateAngle: 90
+  ~rotatePages:
+  ~facturxXml: @file(../../test/integration/testdata/embed_1.xml)
+  ~facturxConformanceLevel: EN 16931
+  ~facturxDocumentType: INVOICE
+  ~facturxVersion: 1.0
+}
+
+headers {
+  ~Gotenberg-Output-Filename: merged
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Metadata/Read Metadata.bru

@@ -0,0 +1,24 @@
+meta {
+  name: Read Metadata
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/metadata/read
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+}
+
+headers {
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Metadata/Write Metadata.bru

@@ -0,0 +1,26 @@
+meta {
+  name: Write Metadata
+  type: http
+  seq: 2
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/metadata/write
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+  metadata: {"Author":"Bruno","Copyright":"Bruno","Creator":"Gotenberg","Keywords":["test"],"Marked":true,"Producer":"Gotenberg","Subject":"Test","Title":"Test Document","Trapped":"Unknown"}
+}
+
+headers {
+  ~Gotenberg-Output-Filename: with-metadata
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Rotate/Rotate PDF.bru

@@ -0,0 +1,27 @@
+meta {
+  name: Rotate PDF
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/rotate
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+  rotateAngle: 90
+  ~rotatePages: 1-2
+}
+
+headers {
+  ~Gotenberg-Output-Filename: rotated
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Split/Split PDF.bru

@@ -0,0 +1,54 @@
+meta {
+  name: Split PDF
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/split
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/pages_3.pdf)
+  splitMode: intervals
+  splitSpan: 1
+  ~splitUnify: false
+  ~flatten: false
+  ~pdfa: PDF/A-1b
+  ~pdfua: true
+  ~metadata: {"Author":"Bruno","Title":"Test"}
+  ~userPassword:
+  ~ownerPassword:
+  ~allowPrinting: false
+  ~allowCopying: false
+  ~allowModifying: false
+  ~allowAnnotating: false
+  ~allowFillingForms: false
+  ~allowAssembling: false
+  ~watermarkSource: text
+  ~watermarkExpression: CONFIDENTIAL
+  ~watermarkPages:
+  ~watermarkOptions: {"scale":"0.5 abs","rot":"45","fillcolor":"#FF0000"}
+  ~stampSource: text
+  ~stampExpression: DRAFT
+  ~stampPages:
+  ~stampOptions: {"scale":"0.5 abs","rot":"45"}
+  ~rotateAngle: 90
+  ~rotatePages:
+  ~facturxXml: @file(../../test/integration/testdata/embed_1.xml)
+  ~facturxConformanceLevel: EN 16931
+  ~facturxDocumentType: INVOICE
+  ~facturxVersion: 1.0
+}
+
+headers {
+  ~Gotenberg-Output-Filename: split
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Stamp/Stamp PDF.bru

@@ -0,0 +1,31 @@
+meta {
+  name: Stamp PDF
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/stamp
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+  stampSource: text
+  stampExpression: APPROVED
+  ~stampPages: 1-2
+  ~stampOptions: {"font":"Helvetica","fontSize":"48","color":"#00FF00","opacity":"0.5","rotation":"0"}
+  ~stamp: @file(../../test/integration/testdata/watermark.png)
+  ~downloadFrom: [{"url":"https://example.com/stamp.png","field":"stamp"}]
+}
+
+headers {
+  ~Gotenberg-Output-Filename: stamped
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/PDF Engines/Watermark/Watermark PDF.bru

@@ -0,0 +1,31 @@
+meta {
+  name: Watermark PDF
+  type: http
+  seq: 1
+}
+
+post {
+  url: {{baseUrl}}/forms/pdfengines/watermark
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/page_1.pdf)
+  watermarkSource: text
+  watermarkExpression: CONFIDENTIAL
+  ~watermarkPages: 1-2
+  ~watermarkOptions: {"font":"Helvetica","fontSize":"48","color":"#FF0000","opacity":"0.3","rotation":"45"}
+  ~watermark: @file(../../test/integration/testdata/watermark.png)
+  ~downloadFrom: [{"url":"https://example.com/watermark.png","field":"watermark"}]
+}
+
+headers {
+  ~Gotenberg-Output-Filename: watermarked
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Events-Url: http://localhost:8080/webhook/events
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}

.bruno/README.md

@@ -0,0 +1,65 @@
+# Bruno API Collection
+
+[Bruno](https://www.usebruno.com/) collection mirroring every Gotenberg route. Update the collection when adding or modifying a route.
+
+## Structure
+
+```
+.bruno/
+├── bruno.json                      # Collection config
+├── collection.bru                  # Collection-level defaults (Gotenberg-Trace header)
+├── environments/
+│   ├── Local.bru                   # baseUrl: http://localhost:3000
+│   └── Demo.bru                    # baseUrl: https://demo.gotenberg.dev
+├── Health & Info/                   # GET routes
+├── Chromium/Convert/                # POST routes grouped by module
+├── Chromium/Screenshot/
+├── LibreOffice/
+└── PDF Engines/<Feature>/           # One folder per feature (Merge, Split, Rotate, ...)
+```
+
+## `.bru` file format
+
+```bru
+meta {
+  name: <Human-readable name>
+  type: http
+  seq: <order within folder>
+}
+
+post {
+  url: {{baseUrl}}/forms/<path>
+  body: multipartForm
+  auth: none
+}
+
+body:multipart-form {
+  files: @file(../../test/integration/testdata/<file>)
+  <mandatoryField>: <value>
+  ~<optionalField>: <value>
+}
+
+headers {
+  ~Gotenberg-Output-Filename: <name>
+  ~Gotenberg-Webhook-Url: http://localhost:8080/webhook
+  ~Gotenberg-Webhook-Error-Url: http://localhost:8080/webhook/error
+  ~Gotenberg-Webhook-Method: POST
+  ~Gotenberg-Webhook-Error-Method: POST
+  ~Gotenberg-Webhook-Extra-Http-Headers: {"X-Custom":"value"}
+}
+```
+
+## Conventions
+
+- Mandatory fields have no prefix. Optional fields use `~` (disabled by default in Bruno).
+- File references use relative paths to `test/integration/testdata/`.
+- Webhook and output filename headers appear on every POST route as optional (`~`).
+- One `.bru` file per request. For routes with read/write variants (e.g., bookmarks, metadata), create separate files in the same folder.
+
+## Checklist
+
+1. Create or update the `.bru` file in the matching folder under `.bruno/`.
+2. Include all form fields from the route handler. Check `FormData*` calls in the route function.
+3. For file upload fields (`files`, `watermark`, `stamp`, `embeds`), use `@file(...)` with a suitable test file.
+4. Verify the URL path matches the route's `Path` field exactly.
+5. For new module folders, keep the naming consistent (e.g., `PDF Engines/Rotate/`).

.bruno/bruno.json

@@ -0,0 +1,6 @@
+{
+  "version": "1",
+  "name": "Gotenberg",
+  "type": "collection",
+  "ignore": ["node_modules", ".git"]
+}

.bruno/collection.bru

@@ -0,0 +1,3 @@
+headers {
+  Gotenberg-Trace: {{traceId}}
+}

.bruno/environments/Demo.bru

@@ -0,0 +1,4 @@
+vars {
+  baseUrl: https://demo.gotenberg.dev
+  traceId: bruno-demo
+}

.bruno/environments/Local.bru

@@ -0,0 +1,4 @@
+vars {
+  baseUrl: http://localhost:3000
+  traceId: bruno-local
+}

.env

@@ -2,6 +2,5 @@ GOTENBERG_VERSION=snapshot
 DOCKER_REGISTRY=gotenberg
 DOCKER_REPOSITORY=gotenberg
 DOCKERFILE=build/Dockerfile
-DOCKERFILE_CLOUDRUN=build/Dockerfile.cloudrun
-DOCKERFILE_AWS_LAMBDA=build/Dockerfile.aws-lambda
 DOCKER_BUILD_CONTEXT='.'
+TARGET=gotenberg

.github/actions/build-test-push/action.yml

@@ -29,14 +29,32 @@ inputs:
 
 outputs:
   tags:
-    description: Comma separated list of tag
+    description: Comma separated list of full variant tags
     value: ${{ steps.build.outputs.tags }}
+  tags_chromium:
+    description: Comma separated list of Chromium variant tags
+    value: ${{ steps.build.outputs.tags_chromium }}
+  tags_libreoffice:
+    description: Comma separated list of LibreOffice variant tags
+    value: ${{ steps.build.outputs.tags_libreoffice }}
   tags_cloud_run:
-    description: Comma separated list of Cloud Run tags (linux/amd64 only)
+    description: Comma separated list of Cloud Run full variant tags (linux/amd64 only)
     value: ${{ steps.build.outputs.tags_cloud_run }}
+  tags_cloud_run_chromium:
+    description: Comma separated list of Cloud Run Chromium variant tags (linux/amd64 only)
+    value: ${{ steps.build.outputs.tags_cloud_run_chromium }}
+  tags_cloud_run_libreoffice:
+    description: Comma separated list of Cloud Run LibreOffice variant tags (linux/amd64 only)
+    value: ${{ steps.build.outputs.tags_cloud_run_libreoffice }}
   tags_aws_lambda:
-    description: Comma separated list of AWS Lambda tags (linux/amd64 and linux/arm64 only)
+    description: Comma separated list of AWS Lambda full variant tags (linux/amd64 and linux/arm64 only)
     value: ${{ steps.build.outputs.tags_aws_lambda }}
+  tags_aws_lambda_chromium:
+    description: Comma separated list of AWS Lambda Chromium variant tags (linux/amd64 and linux/arm64 only)
+    value: ${{ steps.build.outputs.tags_aws_lambda_chromium }}
+  tags_aws_lambda_libreoffice:
+    description: Comma separated list of AWS Lambda LibreOffice variant tags (linux/amd64 and linux/arm64 only)
+    value: ${{ steps.build.outputs.tags_aws_lambda_libreoffice }}
 
 runs:
   using: composite
@@ -48,7 +66,7 @@ runs:
       uses: docker/setup-buildx-action@v3
 
     - name: Check out code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Log in to Docker Hub
       if: inputs.docker_hub_username != ''
@@ -60,34 +78,53 @@ runs:
     - name: Build ${{ inputs.platform }}
       id: build
       shell: bash
+      env:
+        INPUT_VERSION: ${{ inputs.version }}
+        INPUT_PLATFORM: ${{ inputs.platform }}
+        INPUT_ALTERNATE_REPOSITORY: ${{ inputs.alternate_repository }}
+        INPUT_DRY_RUN: ${{ inputs.dry_run }}
       run: |
         .github/actions/build-test-push/build.sh \
-          --version "${{ inputs.version }}" \
-          --platform "${{ inputs.platform }}" \
-          --alternate-repository "${{ inputs.alternate_repository }}" \
-          --dry-run "${{ inputs.dry_run }}"
+          --version "$INPUT_VERSION" \
+          --platform "$INPUT_PLATFORM" \
+          --alternate-repository "$INPUT_ALTERNATE_REPOSITORY" \
+          --dry-run "$INPUT_DRY_RUN"
 
     - name: Run integration tests
       if: inputs.skip_integrations_tests != 'true'
       shell: bash
+      env:
+        INPUT_VERSION: ${{ inputs.version }}
+        INPUT_PLATFORM: ${{ inputs.platform }}
+        INPUT_ALTERNATE_REPOSITORY: ${{ inputs.alternate_repository }}
+        INPUT_DRY_RUN: ${{ inputs.dry_run }}
       run: |
         .github/actions/build-test-push/test.sh \
-          --version "${{ inputs.version }}" \
-          --platform "${{ inputs.platform }}" \
-          --alternate-repository "${{ inputs.alternate_repository }}" \
-          --dry-run "${{ inputs.dry_run }}"
+          --version "$INPUT_VERSION" \
+          --platform "$INPUT_PLATFORM" \
+          --alternate-repository "$INPUT_ALTERNATE_REPOSITORY" \
+          --dry-run "$INPUT_DRY_RUN"
 
     - name: Push
       if: inputs.docker_hub_username != ''
       shell: bash
+      env:
+        INPUT_TAGS: ${{ steps.build.outputs.tags }},${{ steps.build.outputs.tags_chromium }},${{ steps.build.outputs.tags_libreoffice }},${{ steps.build.outputs.tags_cloud_run }},${{ steps.build.outputs.tags_cloud_run_chromium }},${{ steps.build.outputs.tags_cloud_run_libreoffice }},${{ steps.build.outputs.tags_aws_lambda }},${{ steps.build.outputs.tags_aws_lambda_chromium }},${{ steps.build.outputs.tags_aws_lambda_libreoffice }}
+        INPUT_DRY_RUN: ${{ inputs.dry_run }}
       run: |
         .github/actions/build-test-push/push.sh \
-          --tags "${{ steps.build.outputs.tags }},${{ steps.build.outputs.tags_cloud_run }},${{ steps.build.outputs.tags_aws_lambda }}" \
-          --dry-run "${{ inputs.dry_run }}"
+          --tags "$INPUT_TAGS" \
+          --dry-run "$INPUT_DRY_RUN"
 
     - name: Outputs
       shell: bash
       run: |
         echo "tags=${{ steps.build.outputs.tags }}"
+        echo "tags_chromium=${{ steps.build.outputs.tags_chromium }}"
+        echo "tags_libreoffice=${{ steps.build.outputs.tags_libreoffice }}"
         echo "tags_cloud_run=${{ steps.build.outputs.tags_cloud_run }}"
+        echo "tags_cloud_run_chromium=${{ steps.build.outputs.tags_cloud_run_chromium }}"
+        echo "tags_cloud_run_libreoffice=${{ steps.build.outputs.tags_cloud_run_libreoffice }}"
         echo "tags_aws_lambda=${{ steps.build.outputs.tags_aws_lambda }}"
+        echo "tags_aws_lambda_chromium=${{ steps.build.outputs.tags_aws_lambda_chromium }}"
+        echo "tags_aws_lambda_libreoffice=${{ steps.build.outputs.tags_aws_lambda_libreoffice }}"

.github/actions/build-test-push/build.sh

@@ -55,8 +55,14 @@ fi
 
 # Build tags arrays.
 tags=()
+tags_chromium=()
+tags_libreoffice=()
 tags_cloud_run=()
+tags_cloud_run_chromium=()
+tags_cloud_run_libreoffice=()
 tags_aws_lambda=()
+tags_aws_lambda_chromium=()
+tags_aws_lambda_libreoffice=()
 
 IFS='/' read -ra arch <<< "$platform"
 IFS='.' read -ra semver <<< "$version"
@@ -69,55 +75,95 @@ if [ "${#semver[@]}" -eq 3 ]; then
   minor="${semver[1]}"
   patch="${semver[2]}"
 
-  tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:latest-${arch[1]}")
-  tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major-${arch[1]}")
-  tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor-${arch[1]}")
-  tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor.$patch-${arch[1]}")
+  for suffix in "latest" "$major" "$major.$minor" "$major.$minor.$patch"; do
+    tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$suffix-${arch[1]}")
+    tags_chromium+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$suffix-chromium-${arch[1]}")
+    tags_libreoffice+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$suffix-libreoffice-${arch[1]}")
+  done
 
   if [ "$platform" = "linux/amd64" ]; then
-    tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:latest-cloudrun")
-    tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major-cloudrun")
-    tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor-cloudrun")
-    tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor.$patch-cloudrun")
+    for suffix in "latest" "$major" "$major.$minor" "$major.$minor.$patch"; do
+      tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$suffix-cloudrun")
+      tags_cloud_run_chromium+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$suffix-chromium-cloudrun")
+      tags_cloud_run_libreoffice+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$suffix-libreoffice-cloudrun")
+    done
   fi
 
   if [ "$platform" = "linux/amd64" ] || [ "$platform" = "linux/arm64" ]; then
-    tags_aws_lambda+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:latest-aws-lambda-${arch[1]}")
-    tags_aws_lambda+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major-aws-lambda-${arch[1]}")
-    tags_aws_lambda+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor-aws-lambda-${arch[1]}")
-    tags_aws_lambda+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor.$patch-aws-lambda-${arch[1]}")
+    for suffix in "latest" "$major" "$major.$minor" "$major.$minor.$patch"; do
+      tags_aws_lambda+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$suffix-aws-lambda-${arch[1]}")
+      tags_aws_lambda_chromium+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$suffix-chromium-aws-lambda-${arch[1]}")
+      tags_aws_lambda_libreoffice+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$suffix-libreoffice-aws-lambda-${arch[1]}")
+    done
   fi
 else
   echo
   echo "Non-semver version detected, fallback to $version"
 
   tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-${arch[1]}")
+  tags_chromium+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-chromium-${arch[1]}")
+  tags_libreoffice+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-libreoffice-${arch[1]}")
+
   if [ "$platform" = "linux/amd64" ]; then
     tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-cloudrun")
+    tags_cloud_run_chromium+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-chromium-cloudrun")
+    tags_cloud_run_libreoffice+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-libreoffice-cloudrun")
   fi
 
   if [ "$platform" = "linux/amd64" ] || [ "$platform" = "linux/arm64" ]; then
     tags_aws_lambda+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-aws-lambda-${arch[1]}")
+    tags_aws_lambda_chromium+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-chromium-aws-lambda-${arch[1]}")
+    tags_aws_lambda_libreoffice+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-libreoffice-aws-lambda-${arch[1]}")
   fi
 fi
 
 tags_flags=()
+tags_chromium_flags=()
+tags_libreoffice_flags=()
 tags_cloud_run_flags=()
+tags_cloud_run_chromium_flags=()
+tags_cloud_run_libreoffice_flags=()
 tags_aws_lambda_flags=()
+tags_aws_lambda_chromium_flags=()
+tags_aws_lambda_libreoffice_flags=()
 
 echo "Will use the following tags:"
 for tag in "${tags[@]}"; do
   tags_flags+=("-t" "$tag")
   echo "- $tag"
 done
+for tag in "${tags_chromium[@]}"; do
+  tags_chromium_flags+=("-t" "$tag")
+  echo "- $tag"
+done
+for tag in "${tags_libreoffice[@]}"; do
+  tags_libreoffice_flags+=("-t" "$tag")
+  echo "- $tag"
+done
 for tag in "${tags_cloud_run[@]}"; do
   tags_cloud_run_flags+=("-t" "$tag")
   echo "- $tag"
 done
+for tag in "${tags_cloud_run_chromium[@]}"; do
+  tags_cloud_run_chromium_flags+=("-t" "$tag")
+  echo "- $tag"
+done
+for tag in "${tags_cloud_run_libreoffice[@]}"; do
+  tags_cloud_run_libreoffice_flags+=("-t" "$tag")
+  echo "- $tag"
+done
 for tag in "${tags_aws_lambda[@]}"; do
   tags_aws_lambda_flags+=("-t" "$tag")
   echo "- $tag"
 done
+for tag in "${tags_aws_lambda_chromium[@]}"; do
+  tags_aws_lambda_chromium_flags+=("-t" "$tag")
+  echo "- $tag"
+done
+for tag in "${tags_aws_lambda_libreoffice[@]}"; do
+  tags_aws_lambda_libreoffice_flags+=("-t" "$tag")
+  echo "- $tag"
+done
 echo
 
 # Build images.
@@ -145,7 +191,9 @@ join() {
 
 no_arch_tag="$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version"
 
+# Full variant.
 cmd="docker buildx build \
+    --target gotenberg \
     --build-arg GOTENBERG_VERSION=$version \
     --platform $platform \
     --load \
@@ -155,30 +203,102 @@ cmd="docker buildx build \
 "
 run_cmd "$cmd"
 
+# Chromium only variant.
+cmd="docker buildx build \
+    --target gotenberg-chromium \
+    --build-arg GOTENBERG_VERSION=$version \
+    --platform $platform \
+    --load \
+    ${tags_chromium_flags[*]} \
+    -f $DOCKERFILE $DOCKER_BUILD_CONTEXT
+"
+run_cmd "$cmd"
+
+# LibreOffice only variant.
+cmd="docker buildx build \
+    --target gotenberg-libreoffice \
+    --build-arg GOTENBERG_VERSION=$version \
+    --platform $platform \
+    --load \
+    ${tags_libreoffice_flags[*]} \
+    -f $DOCKERFILE $DOCKER_BUILD_CONTEXT
+"
+run_cmd "$cmd"
+
+# Cloud Run variants (amd64 only).
 if [ "$platform" = "linux/amd64" ]; then
-  cmd="docker build \
-      --build-arg DOCKER_REGISTRY=$DOCKER_REGISTRY \
-      --build-arg DOCKER_REPOSITORY=$DOCKER_REPOSITORY \
+  cmd="docker buildx build \
+      --target gotenberg-cloudrun \
       --build-arg GOTENBERG_VERSION=$version \
+      --platform $platform \
+      --load \
       ${tags_cloud_run_flags[*]} \
-      -f $DOCKERFILE_CLOUDRUN $DOCKER_BUILD_CONTEXT
+      -f $DOCKERFILE $DOCKER_BUILD_CONTEXT
+  "
+  run_cmd "$cmd"
+
+  cmd="docker buildx build \
+      --target gotenberg-cloudrun-chromium \
+      --build-arg GOTENBERG_VERSION=$version \
+      --platform $platform \
+      --load \
+      ${tags_cloud_run_chromium_flags[*]} \
+      -f $DOCKERFILE $DOCKER_BUILD_CONTEXT
+  "
+  run_cmd "$cmd"
+
+  cmd="docker buildx build \
+      --target gotenberg-cloudrun-libreoffice \
+      --build-arg GOTENBERG_VERSION=$version \
+      --platform $platform \
+      --load \
+      ${tags_cloud_run_libreoffice_flags[*]} \
+      -f $DOCKERFILE $DOCKER_BUILD_CONTEXT
   "
   run_cmd "$cmd"
 fi
 
+# AWS Lambda variants (amd64 + arm64 only).
 if [ "$platform" = "linux/amd64" ] || [ "$platform" = "linux/arm64" ]; then
-  cmd="docker build \
-        --build-arg DOCKER_REGISTRY=$DOCKER_REGISTRY \
-        --build-arg DOCKER_REPOSITORY=$DOCKER_REPOSITORY \
-        --build-arg GOTENBERG_VERSION=$version \
-        ${tags_aws_lambda_flags[*]} \
-        -f $DOCKERFILE_AWS_LAMBDA $DOCKER_BUILD_CONTEXT
+  cmd="docker buildx build \
+      --target gotenberg-aws-lambda \
+      --build-arg GOTENBERG_VERSION=$version \
+      --platform $platform \
+      --load \
+      ${tags_aws_lambda_flags[*]} \
+      -f $DOCKERFILE $DOCKER_BUILD_CONTEXT
+  "
+  run_cmd "$cmd"
+
+  cmd="docker buildx build \
+      --target gotenberg-aws-lambda-chromium \
+      --build-arg GOTENBERG_VERSION=$version \
+      --platform $platform \
+      --load \
+      ${tags_aws_lambda_chromium_flags[*]} \
+      -f $DOCKERFILE $DOCKER_BUILD_CONTEXT
+  "
+  run_cmd "$cmd"
+
+  cmd="docker buildx build \
+      --target gotenberg-aws-lambda-libreoffice \
+      --build-arg GOTENBERG_VERSION=$version \
+      --platform $platform \
+      --load \
+      ${tags_aws_lambda_libreoffice_flags[*]} \
+      -f $DOCKERFILE $DOCKER_BUILD_CONTEXT
   "
   run_cmd "$cmd"
 fi
 
 echo "✅ Done!"
 echo "tags=$(join "," "${tags[@]}")" >> "$GITHUB_OUTPUT"
+echo "tags_chromium=$(join "," "${tags_chromium[@]}")" >> "$GITHUB_OUTPUT"
+echo "tags_libreoffice=$(join "," "${tags_libreoffice[@]}")" >> "$GITHUB_OUTPUT"
 echo "tags_cloud_run=$(join "," "${tags_cloud_run[@]}")" >> "$GITHUB_OUTPUT"
+echo "tags_cloud_run_chromium=$(join "," "${tags_cloud_run_chromium[@]}")" >> "$GITHUB_OUTPUT"
+echo "tags_cloud_run_libreoffice=$(join "," "${tags_cloud_run_libreoffice[@]}")" >> "$GITHUB_OUTPUT"
 echo "tags_aws_lambda=$(join "," "${tags_aws_lambda[@]}")" >> "$GITHUB_OUTPUT"
+echo "tags_aws_lambda_chromium=$(join "," "${tags_aws_lambda_chromium[@]}")" >> "$GITHUB_OUTPUT"
+echo "tags_aws_lambda_libreoffice=$(join "," "${tags_aws_lambda_libreoffice[@]}")" >> "$GITHUB_OUTPUT"
 exit 0

.github/actions/clean/action.yml

@@ -23,9 +23,12 @@ runs:
       env:
         DOCKERHUB_USERNAME: ${{ inputs.docker_hub_username }}
         DOCKERHUB_TOKEN: ${{ inputs.docker_hub_password }}
+        INPUT_TAGS: ${{ inputs.tags }}
+        INPUT_SNAPSHOT_VERSION: ${{ inputs.snapshot_version }}
+        INPUT_DRY_RUN: ${{ inputs.dry_run }}
       shell: bash
       run: |
         .github/actions/clean/clean.sh \
-          --tags "${{ inputs.tags }}" \
-          --snapshot-version "${{ inputs.snapshot_version }}" \
-          --dry-run "${{ inputs.dry_run }}"
+          --tags "$INPUT_TAGS" \
+          --snapshot-version "$INPUT_SNAPSHOT_VERSION" \
+          --dry-run "$INPUT_DRY_RUN"

.github/actions/merge/action.yml

@@ -31,7 +31,7 @@ runs:
       uses: docker/setup-buildx-action@v3
 
     - name: Check out code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Log in to Docker Hub
       uses: docker/login-action@v3
@@ -41,8 +41,12 @@ runs:
 
     - name: Merge
       shell: bash
+      env:
+        INPUT_TAGS: ${{ inputs.tags }}
+        INPUT_ALTERNATE_REGISTRY: ${{ inputs.alternate_registry }}
+        INPUT_DRY_RUN: ${{ inputs.dry_run }}
       run: |
         .github/actions/merge/merge.sh \
-          --tags "${{ inputs.tags }}" \
-          --alternate-registry "${{ inputs.alternate_registry }}" \
-          --dry-run "${{ inputs.dry_run }}"
+          --tags "$INPUT_TAGS" \
+          --alternate-registry "$INPUT_ALTERNATE_REGISTRY" \
+          --dry-run "$INPUT_DRY_RUN"

.github/dependabot.yml

@@ -12,7 +12,15 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+    ignore:
+      # Held at v0.14.2: v0.15.x breaks the headless print-mode paint pipeline
+      # (rAF / ResizeObserver / IntersectionObserver stop firing, blank charts).
+      # See https://github.com/gotenberg/gotenberg/issues/1535.
+      - dependency-name: "github.com/chromedp/chromedp"
+      - dependency-name: "github.com/chromedp/cdproto"
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
       interval: "weekly"
+    cooldown:
+      default-days: 7

.github/workflows/continuous-delivery.yml

@@ -13,11 +13,17 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       tags: ${{ steps.build_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build and push
         id: build_push
@@ -34,11 +40,17 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       tags: ${{ steps.build_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build and push
         id: build_push
@@ -55,11 +67,17 @@ jobs:
     runs-on: ubuntu-24.04-ppc64le
     outputs:
       tags: ${{ steps.build_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build and push
         id: build_push
@@ -76,11 +94,17 @@ jobs:
     runs-on: ubuntu-24.04-arm
     outputs:
       tags: ${{ steps.build_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build and push
         id: build_push
@@ -97,11 +121,17 @@ jobs:
     runs-on: ubuntu-24.04-arm
     outputs:
       tags: ${{ steps.build_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build and push
         id: build_push
@@ -124,7 +154,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Merge
         uses: ./.github/actions/merge
@@ -132,7 +162,20 @@ jobs:
           docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
           docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
           tags: "${{ needs.release_amd64.outputs.tags }},${{ needs.release_386.outputs.tags }},${{ needs.release_ppc64le.outputs.tags }},${{ needs.release_arm64.outputs.tags }},${{ needs.release_arm_v7.outputs.tags }}"
-          alternate_registry: thecodingmachine
+
+      - name: Merge Chromium
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.release_amd64.outputs.tags_chromium }},${{ needs.release_386.outputs.tags_chromium }},${{ needs.release_ppc64le.outputs.tags_chromium }},${{ needs.release_arm64.outputs.tags_chromium }},${{ needs.release_arm_v7.outputs.tags_chromium }}"
+
+      - name: Merge LibreOffice
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.release_amd64.outputs.tags_libreoffice }},${{ needs.release_386.outputs.tags_libreoffice }},${{ needs.release_ppc64le.outputs.tags_libreoffice }},${{ needs.release_arm64.outputs.tags_libreoffice }},${{ needs.release_arm_v7.outputs.tags_libreoffice }}"
 
       - name: Merge AWS Lambda
         uses: ./.github/actions/merge
@@ -140,11 +183,24 @@ jobs:
           docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
           docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
           tags: "${{ needs.release_amd64.outputs.tags_aws_lambda }},${{ needs.release_arm64.outputs.tags_aws_lambda }}"
-          alternate_registry: thecodingmachine
+
+      - name: Merge AWS Lambda Chromium
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.release_amd64.outputs.tags_aws_lambda_chromium }},${{ needs.release_arm64.outputs.tags_aws_lambda_chromium }}"
+
+      - name: Merge AWS Lambda LibreOffice
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.release_amd64.outputs.tags_aws_lambda_libreoffice }},${{ needs.release_arm64.outputs.tags_aws_lambda_libreoffice }}"
 
       - name: Clean
         uses: ./.github/actions/clean
         with:
           docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
           docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
-          tags: "${{ needs.release_amd64.outputs.tags }},${{ needs.release_386.outputs.tags }},${{ needs.release_ppc64le.outputs.tags }},${{ needs.release_arm64.outputs.tags }},${{ needs.release_arm_v7.outputs.tags }},${{ needs.release_amd64.outputs.tags_aws_lambda }},${{ needs.release_arm64.outputs.tags_aws_lambda }}"
+          tags: "${{ needs.release_amd64.outputs.tags }},${{ needs.release_386.outputs.tags }},${{ needs.release_ppc64le.outputs.tags }},${{ needs.release_arm64.outputs.tags }},${{ needs.release_arm_v7.outputs.tags }},${{ needs.release_amd64.outputs.tags_chromium }},${{ needs.release_386.outputs.tags_chromium }},${{ needs.release_ppc64le.outputs.tags_chromium }},${{ needs.release_arm64.outputs.tags_chromium }},${{ needs.release_arm_v7.outputs.tags_chromium }},${{ needs.release_amd64.outputs.tags_libreoffice }},${{ needs.release_386.outputs.tags_libreoffice }},${{ needs.release_ppc64le.outputs.tags_libreoffice }},${{ needs.release_arm64.outputs.tags_libreoffice }},${{ needs.release_arm_v7.outputs.tags_libreoffice }},${{ needs.release_amd64.outputs.tags_aws_lambda }},${{ needs.release_arm64.outputs.tags_aws_lambda }},${{ needs.release_amd64.outputs.tags_aws_lambda_chromium }},${{ needs.release_arm64.outputs.tags_aws_lambda_chromium }},${{ needs.release_amd64.outputs.tags_aws_lambda_libreoffice }},${{ needs.release_arm64.outputs.tags_aws_lambda_libreoffice }}"

.github/workflows/continuous-integration.yml

@@ -21,10 +21,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Setup Go
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v7
         with:
           go-version-file: go.mod
 
@@ -38,15 +38,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v7
         with:
           node-version-file: .node-version
 
       - name: Install Dependencies
-        run: npm i
+        run: npm ci --ignore-scripts
 
       - name: Run linters
         run: make lint-prettier
@@ -59,10 +59,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Setup Go
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v7
         with:
           go-version-file: go.mod
 
@@ -77,11 +77,17 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -101,11 +107,17 @@ jobs:
     runs-on: ubuntu-24.04-ppc64le
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -125,11 +137,17 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -149,11 +167,17 @@ jobs:
     runs-on: ubuntu-24.04-arm
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -173,11 +197,17 @@ jobs:
     runs-on: ubuntu-24.04-arm
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -223,7 +253,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Merge
         uses: ./.github/actions/merge
@@ -232,6 +262,20 @@ jobs:
           docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
           tags: "${{ needs.snapshot_amd64.outputs.tags }},${{ needs.snapshot_386.outputs.tags }},${{ needs.snapshot_ppc64le.outputs.tags }},${{ needs.snapshot_arm64.outputs.tags }},${{ needs.snapshot_arm_v7.outputs.tags }}"
 
+      - name: Merge Chromium
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.snapshot_amd64.outputs.tags_chromium }},${{ needs.snapshot_386.outputs.tags_chromium }},${{ needs.snapshot_ppc64le.outputs.tags_chromium }},${{ needs.snapshot_arm64.outputs.tags_chromium }},${{ needs.snapshot_arm_v7.outputs.tags_chromium }}"
+
+      - name: Merge LibreOffice
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.snapshot_amd64.outputs.tags_libreoffice }},${{ needs.snapshot_386.outputs.tags_libreoffice }},${{ needs.snapshot_ppc64le.outputs.tags_libreoffice }},${{ needs.snapshot_arm64.outputs.tags_libreoffice }},${{ needs.snapshot_arm_v7.outputs.tags_libreoffice }}"
+
       - name: Merge AWS Lambda
         uses: ./.github/actions/merge
         with:
@@ -239,12 +283,26 @@ jobs:
           docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
           tags: "${{ needs.snapshot_amd64.outputs.tags_aws_lambda }},${{ needs.snapshot_arm64.outputs.tags_aws_lambda }}"
 
+      - name: Merge AWS Lambda Chromium
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.snapshot_amd64.outputs.tags_aws_lambda_chromium }},${{ needs.snapshot_arm64.outputs.tags_aws_lambda_chromium }}"
+
+      - name: Merge AWS Lambda LibreOffice
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.snapshot_amd64.outputs.tags_aws_lambda_libreoffice }},${{ needs.snapshot_arm64.outputs.tags_aws_lambda_libreoffice }}"
+
       - name: Clean
         uses: ./.github/actions/clean
         with:
           docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
           docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
-          tags: "${{ needs.snapshot_amd64.outputs.tags }},${{ needs.snapshot_386.outputs.tags }},${{ needs.snapshot_ppc64le.outputs.tags }},${{ needs.snapshot_arm64.outputs.tags }},${{ needs.snapshot_arm_v7.outputs.tags }},${{ needs.snapshot_amd64.outputs.tags_aws_lambda }},${{ needs.snapshot_arm64.outputs.tags_aws_lambda }}"
+          tags: "${{ needs.snapshot_amd64.outputs.tags }},${{ needs.snapshot_386.outputs.tags }},${{ needs.snapshot_ppc64le.outputs.tags }},${{ needs.snapshot_arm64.outputs.tags }},${{ needs.snapshot_arm_v7.outputs.tags }},${{ needs.snapshot_amd64.outputs.tags_chromium }},${{ needs.snapshot_386.outputs.tags_chromium }},${{ needs.snapshot_ppc64le.outputs.tags_chromium }},${{ needs.snapshot_arm64.outputs.tags_chromium }},${{ needs.snapshot_arm_v7.outputs.tags_chromium }},${{ needs.snapshot_amd64.outputs.tags_libreoffice }},${{ needs.snapshot_386.outputs.tags_libreoffice }},${{ needs.snapshot_ppc64le.outputs.tags_libreoffice }},${{ needs.snapshot_arm64.outputs.tags_libreoffice }},${{ needs.snapshot_arm_v7.outputs.tags_libreoffice }},${{ needs.snapshot_amd64.outputs.tags_aws_lambda }},${{ needs.snapshot_arm64.outputs.tags_aws_lambda }},${{ needs.snapshot_amd64.outputs.tags_aws_lambda_chromium }},${{ needs.snapshot_arm64.outputs.tags_aws_lambda_chromium }},${{ needs.snapshot_amd64.outputs.tags_aws_lambda_libreoffice }},${{ needs.snapshot_arm64.outputs.tags_aws_lambda_libreoffice }}"
 
   edge_amd64:
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
@@ -254,11 +312,17 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -277,11 +341,17 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -300,11 +370,17 @@ jobs:
     runs-on: ubuntu-24.04-ppc64le
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -323,11 +399,17 @@ jobs:
     runs-on: ubuntu-24.04-arm
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -346,11 +428,17 @@ jobs:
     runs-on: ubuntu-24.04-arm
     outputs:
       tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_chromium: ${{ steps.build_test_push.outputs.tags_chromium }}
+      tags_libreoffice: ${{ steps.build_test_push.outputs.tags_libreoffice }}
       tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+      tags_cloud_run_chromium: ${{ steps.build_test_push.outputs.tags_cloud_run_chromium }}
+      tags_cloud_run_libreoffice: ${{ steps.build_test_push.outputs.tags_cloud_run_libreoffice }}
       tags_aws_lambda: ${{ steps.build_test_push.outputs.tags_aws_lambda }}
+      tags_aws_lambda_chromium: ${{ steps.build_test_push.outputs.tags_aws_lambda_chromium }}
+      tags_aws_lambda_libreoffice: ${{ steps.build_test_push.outputs.tags_aws_lambda_libreoffice }}
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Build, test and push
         id: build_test_push
@@ -372,7 +460,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Merge
         uses: ./.github/actions/merge
@@ -380,7 +468,20 @@ jobs:
           docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
           docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
           tags: "${{ needs.edge_amd64.outputs.tags }},${{ needs.edge_386.outputs.tags }},${{ needs.edge_ppc64le.outputs.tags }},${{ needs.edge_arm64.outputs.tags }},${{ needs.edge_arm_v7.outputs.tags }}"
-          alternate_registry: thecodingmachine
+
+      - name: Merge Chromium
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.edge_amd64.outputs.tags_chromium }},${{ needs.edge_386.outputs.tags_chromium }},${{ needs.edge_ppc64le.outputs.tags_chromium }},${{ needs.edge_arm64.outputs.tags_chromium }},${{ needs.edge_arm_v7.outputs.tags_chromium }}"
+
+      - name: Merge LibreOffice
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.edge_amd64.outputs.tags_libreoffice }},${{ needs.edge_386.outputs.tags_libreoffice }},${{ needs.edge_ppc64le.outputs.tags_libreoffice }},${{ needs.edge_arm64.outputs.tags_libreoffice }},${{ needs.edge_arm_v7.outputs.tags_libreoffice }}"
 
       - name: Merge AWS Lambda
         uses: ./.github/actions/merge
@@ -388,11 +489,24 @@ jobs:
           docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
           docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
           tags: "${{ needs.edge_amd64.outputs.tags_aws_lambda }},${{ needs.edge_arm64.outputs.tags_aws_lambda }}"
-          alternate_registry: thecodingmachine
+
+      - name: Merge AWS Lambda Chromium
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.edge_amd64.outputs.tags_aws_lambda_chromium }},${{ needs.edge_arm64.outputs.tags_aws_lambda_chromium }}"
+
+      - name: Merge AWS Lambda LibreOffice
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.edge_amd64.outputs.tags_aws_lambda_libreoffice }},${{ needs.edge_arm64.outputs.tags_aws_lambda_libreoffice }}"
 
       - name: Clean
         uses: ./.github/actions/clean
         with:
           docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
           docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
-          tags: "${{ needs.edge_amd64.outputs.tags }},${{ needs.edge_386.outputs.tags }},${{ needs.edge_ppc64le.outputs.tags }},${{ needs.edge_arm64.outputs.tags }},${{ needs.edge_arm_v7.outputs.tags }},${{ needs.edge_amd64.outputs.tags_aws_lambda }},${{ needs.edge_arm64.outputs.tags_aws_lambda }}"
+          tags: "${{ needs.edge_amd64.outputs.tags }},${{ needs.edge_386.outputs.tags }},${{ needs.edge_ppc64le.outputs.tags }},${{ needs.edge_arm64.outputs.tags }},${{ needs.edge_arm_v7.outputs.tags }},${{ needs.edge_amd64.outputs.tags_chromium }},${{ needs.edge_386.outputs.tags_chromium }},${{ needs.edge_ppc64le.outputs.tags_chromium }},${{ needs.edge_arm64.outputs.tags_chromium }},${{ needs.edge_arm_v7.outputs.tags_chromium }},${{ needs.edge_amd64.outputs.tags_libreoffice }},${{ needs.edge_386.outputs.tags_libreoffice }},${{ needs.edge_ppc64le.outputs.tags_libreoffice }},${{ needs.edge_arm64.outputs.tags_libreoffice }},${{ needs.edge_arm_v7.outputs.tags_libreoffice }},${{ needs.edge_amd64.outputs.tags_aws_lambda }},${{ needs.edge_arm64.outputs.tags_aws_lambda }},${{ needs.edge_amd64.outputs.tags_aws_lambda_chromium }},${{ needs.edge_arm64.outputs.tags_aws_lambda_chromium }},${{ needs.edge_amd64.outputs.tags_aws_lambda_libreoffice }},${{ needs.edge_arm64.outputs.tags_aws_lambda_libreoffice }}"

.github/workflows/pull-request-cleanup.yml

@@ -14,7 +14,7 @@ jobs:
     continue-on-error: true
     steps:
       - name: Check out code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Cleanup
         uses: ./.github/actions/clean

.golangci.yml

@@ -24,13 +24,14 @@ linters:
     - ineffassign
     - misspell
     - prealloc
-    - promlinter
     - staticcheck
     - testableexamples
     - tparallel
     - unconvert
     - unused
+    - sloglint
     - usetesting
+    - gocritic
     - wastedassign
     - whitespace
   exclusions:
@@ -40,10 +41,6 @@ linters:
       - common-false-positives
       - legacy
       - std-error-handling
-    paths:
-      - third_party$
-      - builtin$
-      - examples$
 formatters:
   enable:
     - gci
@@ -59,7 +56,3 @@ formatters:
       custom-order: true
   exclusions:
     generated: lax
-    paths:
-      - third_party$
-      - builtin$
-      - examples$

.node-version

@@ -1 +1 @@
-24.11.0
+24.15.0

.npmrc

@@ -0,0 +1 @@
+min-release-age=7

AGENTS.md

@@ -1,66 +0,0 @@
-# Operational Guidelines for Gotenberg
-
-As an AI agent working on the Gotenberg repository, you are expected to act with the diligence and architectural foresight of a Senior Go Engineer. Gotenberg is a widely used production dependency; stability and backward compatibility are paramount.
-
-## 1. Core Philosophy & Stability
-
-- **Backward Compatibility is Law:** This project creates a public API. Never modify existing flags, configuration environment variables, or API form fields unless explicitly instructed to perform a breaking change. If a change is breaking, it must be flagged immediately in the plan.
-- **Defensive Programming:** Assume input data is malformed. Handle errors explicitly. Do not panic.
-- **Atomic Commits:** Isolate refactoring from feature additions. A Pull Request should do one thing well.
-
-## 2. Development Workflow & Tooling
-
-You must rely strictly on the project's Makefile for build and verification tasks. Do not run `go` commands directly unless debugging a specific package requires it.
-
-- **Formatting:** Run `make fmt` to format Go code before committing.
-- **Linting:**
-  - Run `make lint` to ensure Go code strictly adheres to the `.golangci.yml` configuration.
-  - Run `make lint-prettier` to verify formatting for non-Go files (Markdown, YAML, etc.).
-  - Zero linting errors are permitted.
-- **Building:** Run `make build` to verify compilation and Docker image construction.
-
-## 3. Architecture & Code Structure
-
-- **Idiomatic Go:** Follow "Effective Go" principles.
-- **Directory Separation:**
-  - `cmd/`: Application entry points only. Contains wiring and startup logic. **No business logic is permitted here.**
-  - `pkg/`: Core library code and modules. All business logic resides here.
-- **Module System:** Gotenberg is modular (e.g., Chromium, LibreOffice). When adding features, determine if they belong to an existing module or require a new strict isolation.
-
-## 4. Testing Standards
-
-Gotenberg utilizes a split testing strategy. **Integration tests are the primary and preferred method for verifying features.**
-
-- **Integration Tests (`make test-integration`):**
-  - **First Priority:** Always start here when adding features or routes.
-  - Gotenberg uses **Gherkin (Godog)** for end-to-end verification.
-  - You **must** create or update the corresponding `.feature` file in `test/integration`.
-  - These tests run within the Docker context; ensure environment consistency.
-- **Unit Tests (`make test-unit`):**
-  - Use table-driven tests for pure logic within `pkg/`.
-  - Mock external dependencies (filesystem, network) where appropriate.
-
-## 5. Documentation Requirements
-
-- **No README Updates:** Do not modify the root `README.md` unless explicitly asked.
-- **GoDoc is Mandatory:**
-  - **New Packages:** If creating a new package, you must include a `doc.go` file containing the package-level documentation.
-  - **Exported Symbols:** Every exported function, type, constant, and variable must have a proper GoDoc comment starting with its name.
-  - **Quality:** Comments must be complete sentences explaining _what_ the symbol does and _how_ to use it.
-  - **Example:**
-    ```go
-    // Convert transforms the input document to PDF using the Chromium engine.
-    // It returns an error if the connection to the browser instance fails.
-    func Convert(...) error
-    ```
-
-## 6. Definition of Done
-
-A task is considered complete only when:
-
-1.  The code compiles via `make build`.
-2.  The code is formatted via `make fmt`.
-3.  All linters pass via `make lint` and `make lint-prettier`.
-4.  Integration scenarios pass via `make test-integration`.
-5.  Unit tests pass via `make test-unit`.
-6.  All exported symbols and new packages have compliant GoDoc.

AGENTS.md

@@ -0,0 +1 @@
+CONTRIBUTING.md

CLAUDE.md

@@ -0,0 +1 @@
+CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,195 @@
+# Contributing to Gotenberg
+
+Gotenberg is a Docker-based API for converting documents to PDF. Two rules override everything else:
+
+- **Backward compatibility.** Never rename or remove CLI flags, environment variables, API form fields, or HTTP endpoints without discussion.
+- **Defensive programming.** Assume input is malformed, handle errors explicitly, never panic.
+
+## Toolchain
+
+- Module: `github.com/gotenberg/gotenberg/v8`
+- Go: see version in `go.mod`
+- Docker
+- Node.js (see `.node-version`), for Prettier linting
+- [golangci-lint](https://golangci-lint.run/) v2+
+
+## Before you start
+
+For non-trivial changes, open an issue or a draft PR first. Describe what needs to change, the proposed solution (files to modify, interface changes, form fields), and which integration test tags are affected.
+
+One thing per PR. Keep features, bug fixes, and refactoring in separate PRs.
+
+When adding a feature or route, write the Gherkin scenario before the Go code, and plan to update the Bruno collection (`.bruno/`) if a route changes.
+
+## Project layout
+
+```
+cmd/gotenberg/       -> Entry point only (wiring/startup). No business logic.
+pkg/gotenberg/       -> Core module system, interfaces, utilities, mocks.
+pkg/modules/         -> Feature modules (api, chromium, libreoffice, pdfengines, etc.).
+pkg/standard/        -> Wires all standard modules together via imports.
+test/integration/    -> Gherkin feature files + Go test infrastructure.
+build/               -> Dockerfile, fonts, Chromium config.
+.bruno/              -> Bruno API collection (mirrors every route).
+```
+
+Key interfaces live in `pkg/gotenberg/`: `Module`, `Provisioner`, `Validator`, `Debuggable`. Every module implements `Descriptor()` and self-registers via `init()`.
+
+## Setup and Makefile
+
+All build and verification tasks go through the Makefile. Do not run `go` commands directly unless debugging a specific package.
+
+| Command                 | Purpose                                          | When to use                                                              |
+| ----------------------- | ------------------------------------------------ | ------------------------------------------------------------------------ |
+| `make build`            | Build the Gotenberg Docker image                 | Before integration tests or manual testing                               |
+| `make run`              | Run a Gotenberg container via `docker compose`   | Manual testing. Flags configured via Makefile variables and compose.yaml |
+| `make telemetry`        | Start an OpenTelemetry collector and OpenObserve | When testing telemetry locally                                           |
+| `make down`             | Stop all compose containers                      | After manual testing                                                     |
+| `make godoc`            | Serve GoDoc at `localhost:6060`                  | To verify documentation                                                  |
+| `make fmt`              | Format Go code                                   | Before committing                                                        |
+| `make lint`             | Lint Go code (zero errors permitted)             | Before committing                                                        |
+| `make prettify`         | Format non-Go files (Markdown, YAML, JSON)       | Before committing                                                        |
+| `make lint-prettier`    | Lint non-Go files                                | Before committing                                                        |
+| `make test-unit`        | Run unit tests                                   | Before committing                                                        |
+| `make test-integration` | Run all integration tests (40 min timeout)       | Before committing                                                        |
+
+Run only the integration test tag(s) relevant to your change rather than the full suite:
+
+```bash
+make test-integration TAGS=health
+make test-integration TAGS=chromium-convert-html
+make test-integration TAGS="merge,split"
+```
+
+## Code conventions
+
+### Module system
+
+Gotenberg uses a self-registering module architecture inspired by CaddyServer. Each module lives in `pkg/modules/<name>/`, implements at minimum `gotenberg.Module` (`Descriptor()`), and self-registers via `init()`. Wiring happens through `pkg/standard/`.
+
+Determine if a feature belongs in an existing module before creating a new one. Only create a new module for a genuinely separate concern.
+
+The `cmd/gotenberg/` package is strictly for wiring and startup. No business logic.
+
+### Backward compatibility
+
+CLI flags, environment variables, API form fields, HTTP endpoints, and default values that alter existing behavior must not change without discussion. Deprecate old names with `fs.MarkDeprecated()` and register both the old and new names side by side.
+
+If a change violates backward compatibility, flag it as a breaking change in the PR description.
+
+### Error handling
+
+- Wrap every error with context: `fmt.Errorf("description: %w", err)`.
+- Never swallow errors silently.
+- Match errors with `errors.Is`, never `strings.Contains`.
+- No panics in production code paths.
+- Validate input defensively.
+
+### Error messages
+
+Client- and operator-facing error messages state what failed, why when non-obvious, and how to fix it when a fix exists. Internal errors (the wrapped `fmt.Errorf` chains that only reach logs) are exempt; keep them precise and technical.
+
+- Client (HTTP response body): name the offending form field and its valid values. Never return a bare `http.StatusText()`.
+- Operator (startup, `Provision`, `Validate`): name the environment variable or flag to set, plus the path or value checked.
+- Security and filtering errors stay generic for clients. Don't reveal allow/deny lists or private-IP policy. Log the specific reason for operators.
+- No hedging ("while others may have failed"). No raw `os.Stat` or exec output in the human-facing remedy.
+
+### Logging
+
+Use `gotenberg.Logger(mod)` to get the module's slog logger during `Provision()`. All log calls must be context-aware: `logger.DebugContext(ctx, msg)`, `logger.InfoContext(ctx, msg)`, `logger.ErrorContext(ctx, msg)`. This propagates trace/span IDs into structured logs when OpenTelemetry is active.
+
+### Telemetry
+
+External tool calls (Chromium, LibreOffice, PDF engines, webhooks, downloads) must create OTEL spans with `trace.SpanKindClient` and `semconv.ServerAddress("toolname")`. Use `gotenberg.Tracer()` and `gotenberg.Meter()` for traces and metrics.
+
+### Import ordering
+
+Enforced by `gci`: standard library, then third-party, then `github.com/gotenberg/gotenberg/v8`. Three groups separated by blank lines.
+
+## Documentation conventions
+
+### Tone
+
+- Short, declarative sentences. Say what it does, then stop.
+- Lead with the action. "Validates font embedding", not "This function validates font embedding".
+- Active voice. "Gotenberg checks the profile", not "The profile is checked by Gotenberg".
+- No em dashes. Use a period, colon, or comma.
+- No "we" hedging. "Don't...", not "We do not recommend...".
+
+### Godoc
+
+Every exported type and function has a Godoc comment starting with its identifier name:
+
+```go
+// OutboundDecision is the result of validating an outbound URL via
+// [DecideOutbound]. ...
+type OutboundDecision struct { ... }
+
+// DialPinned dials each addr in turn until one connects, returning the
+// first successful connection or the last error. ...
+func DialPinned(ctx context.Context, network string, addrs []netip.Addr, port string) (net.Conn, error)
+```
+
+Each package should have a `doc.go` with a `// Package foo ...` comment:
+
+```go
+// Package api manages a LibreOffice instance via the UNO API.
+package api
+```
+
+Reference identifiers with `[Name]` brackets for pkg.go.dev linking:
+
+```go
+// Callers pass the Pinned slice from [OutboundDecision] so that the dial
+// targets exactly the IPs that [DecideOutbound] resolved, preventing DNS
+// rebinding between validation and connect.
+```
+
+### Code comments
+
+- Explain _why_, not _what_.
+- No numbered step comments (`// 1. Do X`, `// 2. Do Y`).
+- No section dividers with numbers (`// --- 8. Foo ---`). Plain dividers are fine for major boundaries.
+- No noise comments that restate the code (`// Check if err is nil`, `// Return results`).
+- Reference spec clauses where relevant (`// Per ISO 32000-2, Table 116...`).
+- Mark debt with `// TODO: [context]`.
+
+## Testing
+
+### Unit tests
+
+Table-driven tests in `*_test.go` files. Use the comprehensive mock implementations in `pkg/gotenberg/mocks.go` rather than rolling new ones.
+
+### Integration tests
+
+Gherkin (BDD) via Godog with `testcontainers-go` for Docker orchestration. Feature files live in `test/integration/features/`; step definitions live in `test/integration/scenario/`. Read `scenario.go` and `containers.go` before writing new tests.
+
+`make build` is required before running integration tests. The full suite has a 40-minute timeout, so run only the tag(s) relevant to your change.
+
+## Pull requests
+
+### Commits
+
+[Conventional Commits](https://www.conventionalcommits.org/): `<type>(<scope>): <description>`.
+
+Common types: `feat`, `fix`, `refactor`, `test`, `docs`, `chore`, `ci`, `build`. The scope matches the module or area of the change (e.g., `chromium`, `pdfengines`, `api`).
+
+Stage specific files. Never `git add -A` or `git add .`.
+
+### Checklist
+
+Before opening the PR, confirm:
+
+- [ ] No backward-compatibility regression. See [Backward compatibility](#backward-compatibility).
+- [ ] Code conventions met (error wrapping, logging, telemetry, import ordering, no panics, no business logic in `cmd/`). See [Code conventions](#code-conventions).
+- [ ] Documentation conventions met (Godoc on every exported identifier, `doc.go` for new packages, tone). See [Documentation conventions](#documentation-conventions).
+- [ ] `make fmt && make lint && make prettify && make lint-prettier` pass with zero warnings.
+- [ ] `make test-unit` passes.
+- [ ] Relevant `make test-integration TAGS=...` passes.
+- [ ] Bruno collection updated if routes were added or modified.
+
+## Further reading
+
+- [`test/integration/README.md`](test/integration/README.md) — Gherkin step reference, available tags, writing new tests.
+- [`.bruno/README.md`](.bruno/README.md) — `.bru` file format, conventions, route update checklist.
+- [`pkg/modules/pdfengines/README.md`](pkg/modules/pdfengines/README.md) — adding new engine features (Makefile variable and flag).

GEMINI.md

@@ -0,0 +1 @@
+CONTRIBUTING.md

Makefile

@@ -5,8 +5,9 @@ help: ## Show the help
 	@grep -hE '^[A-Za-z0-9_ \-]*?:.*##.*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
 
 .PHONY: build
-build: ## Build the Gotenberg's Docker image
+build: ## Build the Gotenberg's Docker image (use TARGET=gotenberg-chromium or TARGET=gotenberg-libreoffice for variants)
 	docker build \
+	--target $(TARGET) \
 	-t $(DOCKER_REGISTRY)/$(DOCKER_REPOSITORY):$(GOTENBERG_VERSION) \
 	-f $(DOCKERFILE) $(DOCKER_BUILD_CONTEXT)
 
@@ -17,22 +18,31 @@ GOTENBERG_BUILD_DEBUG_DATA=true
 API_PORT=3000
 API_PORT_FROM_ENV=
 API_BIND_IP=
+API_TLS_CERT_FILE=
+API_TLS_KEY_FILE=
 API_START_TIMEOUT=30s
 API_TIMEOUT=30s
 API_BODY_LIMIT=
-API_ROOT_PATH="/"
-API_TRACE_HEADER=Gotenberg-Trace
+API_ROOT_PATH=/
+API_CORRELATION_ID_HEADER=Gotenberg-Trace
 API_ENABLE_BASIC_AUTH=false
 GOTENBERG_API_BASIC_AUTH_USERNAME=
 GOTENBERG_API_BASIC_AUTH_PASSWORD=
-API-DOWNLOAD-FROM-ALLOW-LIST=
-API-DOWNLOAD-FROM-DENY-LIST=
-API-DOWNLOAD-FROM-FROM-MAX-RETRY=4
-API-DISABLE-DOWNLOAD-FROM=false
-API_DISABLE_HEALTH_CHECK_LOGGING=false
+API_DOWNLOAD_FROM_ALLOW_LIST=
+API_DOWNLOAD_FROM_DENY_LIST=^https?://(10\.|172\.(1[6-9]|2[0-9]|3[01])\.|192\.168\.|169\.254\.|0\.0\.0\.0|127\.|localhost|\[::1\]|\[fd)
+API_DOWNLOAD_FROM_DENY_PRIVATE_IPS=false
+API_DOWNLOAD_FROM_DENY_PUBLIC_IPS=false
+API_DOWNLOAD_FROM_ENABLE_ENVIRONMENT_PROXY=false
+API_DOWNLOAD_FROM_MAX_RETRY=4
+API_DISABLE_DOWNLOAD_FROM=false
+API_DISABLE_HEALTH_CHECK_ROUTE_TELEMETRY=true
+API_DISABLE_ROOT_ROUTE_TELEMETRY=true
+API_DISABLE_DEBUG_ROUTE_TELEMETRY=true
+API_DISABLE_VERSION_ROUTE_TELEMETRY=true
 API_ENABLE_DEBUG_ROUTE=false
 CHROMIUM_RESTART_AFTER=100
 CHROMIUM_MAX_QUEUE_SIZE=0
+CHROMIUM_IDLE_SHUTDOWN_TIMEOUT=0
 CHROMIUM_MAX_CONCURRENCY=6
 CHROMIUM_AUTO_START=false
 CHROMIUM_START_TIMEOUT=20s
@@ -42,123 +52,85 @@ CHROMIUM_DISABLE_WEB_SECURITY=false
 CHROMIUM_ALLOW_FILE_ACCESS_FROM_FILES=false
 CHROMIUM_HOST_RESOLVER_RULES=
 CHROMIUM_PROXY_SERVER=
+CHROMIUM_ENABLE_ENVIRONMENT_PROXY=false
 CHROMIUM_ALLOW_LIST=
 CHROMIUM_DENY_LIST=^file:(?!//\/tmp/).*
+CHROMIUM_DENY_PRIVATE_IPS=false
+CHROMIUM_DENY_PUBLIC_IPS=false
 CHROMIUM_CLEAR_CACHE=false
 CHROMIUM_CLEAR_COOKIES=false
 CHROMIUM_DISABLE_JAVASCRIPT=false
 CHROMIUM_DISABLE_ROUTES=false
 LIBREOFFICE_RESTART_AFTER=10
 LIBREOFFICE_MAX_QUEUE_SIZE=0
+LIBREOFFICE_IDLE_SHUTDOWN_TIMEOUT=0
 LIBREOFFICE_AUTO_START=false
 LIBREOFFICE_START_TIMEOUT=20s
+LIBREOFFICE_ALLOW_LIST=
+LIBREOFFICE_DENY_LIST=
+LIBREOFFICE_DENY_PRIVATE_IPS=false
+LIBREOFFICE_DENY_PUBLIC_IPS=false
+LIBREOFFICE_ENABLE_ENVIRONMENT_PROXY=false
 LIBREOFFICE_DISABLE_ROUTES=false
 LOG_LEVEL=info
-LOG_FORMAT=auto
 LOG_FIELDS_PREFIX=
-LOG_ENABLE_GCP_FIELDS=false
+LOG_STD_FORMAT=auto
+LOG_STD_ENABLE_GCP_FIELDS=false
+LOG_STD_LEVEL_CASE=lower
+PDFENGINES_DISABLE_ROUTES=false
 PDFENGINES_MERGE_ENGINES=qpdf,pdfcpu,pdftk
 PDFENGINES_SPLIT_ENGINES=pdfcpu,qpdf,pdftk
 PDFENGINES_FLATTEN_ENGINES=qpdf
 PDFENGINES_CONVERT_ENGINES=libreoffice-pdfengine
 PDFENGINES_READ_METADATA_ENGINES=exiftool
 PDFENGINES_WRITE_METADATA_ENGINES=exiftool
+PDFENGINES_READ_BOOKMARKS_ENGINES=pdfcpu
+PDFENGINES_WRITE_BOOKMARKS_ENGINES=pdfcpu
+PDFENGINES_WATERMARK_ENGINES=pdfcpu,pdftk
+PDFENGINES_STAMP_ENGINES=pdfcpu,pdftk
 PDFENGINES_ENCRYPT_ENGINES=qpdf,pdfcpu,pdftk
-PDFENGINES_DISABLE_ROUTES=false
-PDFENGINES_EMBED_ENGINES=pdfcpu
+PDFENGINES_ROTATE_ENGINES=pdfcpu,pdftk
+PDFENGINES_EMBED_ENGINES=qpdf,pdfcpu
+PDFENGINES_EMBED_METADATA_ENGINES=qpdf
+PDFENGINES_FACTUR_X_ENGINES=qpdf
 PROMETHEUS_NAMESPACE=gotenberg
 PROMETHEUS_COLLECT_INTERVAL=1s
-PROMETHEUS_DISABLE_ROUTE_LOGGING=false
+PROMETHEUS_DISABLE_ROUTE_TELEMETRY=true
 PROMETHEUS_DISABLE_COLLECT=false
 PROMETHEUS_METRICS_PATH=/prometheus/metrics
+OTEL_SERVICE_NAME=gotenberg
+OTEL_TRACES_EXPORTER=none
+OTEL_METRICS_EXPORTER=none
+OTEL_LOGS_EXPORTER=none
+OTEL_EXPORTER_OTLP_PROTOCOL=grpc
+OTEL_EXPORTER_OTLP_ENDPOINT=http://otel-collector:4317
+OTEL_EXPORTER_OTLP_INSECURE=true
 WEBHOOK_ENABLE_SYNC_MODE=false
 WEBHOOK_ALLOW_LIST=
-WEBHOOK_DENY_LIST=
-WEBHOOK_ERROR_ALLOW_LIST=
-WEBHOOK_ERROR_DENY_LIST=
+WEBHOOK_DENY_LIST=^https?://(10\.|172\.(1[6-9]|2[0-9]|3[01])\.|192\.168\.|169\.254\.|0\.0\.0\.0|127\.|localhost|\[::1\]|\[fd)
+WEBHOOK_DENY_PRIVATE_IPS=false
+WEBHOOK_DENY_PUBLIC_IPS=false
+WEBHOOK_ENABLE_ENVIRONMENT_PROXY=false
 WEBHOOK_MAX_RETRY=4
 WEBHOOK_RETRY_MIN_WAIT=1s
 WEBHOOK_RETRY_MAX_WAIT=30s
 WEBHOOK_CLIENT_TIMEOUT=30s
 WEBHOOK_DISABLE=false
 
+# Export all variables so they are available to Compose
+export
+
 .PHONY: run
-run: ## Start a Gotenberg container
-	docker run --rm -it \
-	-p $(API_PORT):$(API_PORT) \
-	-e GOTENBERG_API_BASIC_AUTH_USERNAME=$(GOTENBERG_API_BASIC_AUTH_USERNAME) \
-	-e GOTENBERG_API_BASIC_AUTH_PASSWORD=$(GOTENBERG_API_BASIC_AUTH_PASSWORD) \
-	-e TZ=$(TZ) \
-	$(DOCKER_REGISTRY)/$(DOCKER_REPOSITORY):$(GOTENBERG_VERSION) \
-	gotenberg \
-	--gotenberg-hide-banner=$(GOTENBERG_HIDE_BANNER) \
-	--gotenberg-graceful-shutdown-duration=$(GOTENBERG_GRACEFUL_SHUTDOWN_DURATION) \
-	--gotenberg-build-debug-data="$(GOTENBERG_BUILD_DEBUG_DATA)" \
-	--api-port=$(API_PORT) \
-	--api-port-from-env=$(API_PORT_FROM_ENV) \
-	--api-bind-ip=$(API_BIND_IP) \
-	--api-start-timeout=$(API_START_TIMEOUT) \
-	--api-timeout=$(API_TIMEOUT) \
-	--api-body-limit="$(API_BODY_LIMIT)" \
-	--api-root-path=$(API_ROOT_PATH) \
-	--api-trace-header=$(API_TRACE_HEADER) \
-	--api-enable-basic-auth=$(API_ENABLE_BASIC_AUTH) \
-	--api-download-from-allow-list=$(API-DOWNLOAD-FROM-ALLOW-LIST) \
-	--api-download-from-deny-list=$(API-DOWNLOAD-FROM-DENY-LIST) \
-	--api-download-from-max-retry=$(API-DOWNLOAD-FROM-FROM-MAX-RETRY) \
-	--api-disable-download-from=$(API-DISABLE-DOWNLOAD-FROM) \
-	--api-disable-health-check-logging=$(API_DISABLE_HEALTH_CHECK_LOGGING) \
-	--api-enable-debug-route=$(API_ENABLE_DEBUG_ROUTE) \
-	--chromium-restart-after=$(CHROMIUM_RESTART_AFTER) \
-	--chromium-auto-start=$(CHROMIUM_AUTO_START) \
-	--chromium-max-queue-size=$(CHROMIUM_MAX_QUEUE_SIZE) \
-	--chromium-max-concurrency=$(CHROMIUM_MAX_CONCURRENCY) \
-	--chromium-start-timeout=$(CHROMIUM_START_TIMEOUT) \
-	--chromium-allow-insecure-localhost=$(CHROMIUM_ALLOW_INSECURE_LOCALHOST) \
-	--chromium-ignore-certificate-errors=$(CHROMIUM_IGNORE_CERTIFICATE_ERRORS) \
-	--chromium-disable-web-security=$(CHROMIUM_DISABLE_WEB_SECURITY) \
-	--chromium-allow-file-access-from-files=$(CHROMIUM_ALLOW_FILE_ACCESS_FROM_FILES) \
-	--chromium-host-resolver-rules=$(CHROMIUM_HOST_RESOLVER_RULES) \
-	--chromium-proxy-server=$(CHROMIUM_PROXY_SERVER) \
-	--chromium-allow-list="$(CHROMIUM_ALLOW_LIST)" \
-	--chromium-deny-list="$(CHROMIUM_DENY_LIST)" \
-	--chromium-clear-cache=$(CHROMIUM_CLEAR_CACHE) \
-	--chromium-clear-cookies=$(CHROMIUM_CLEAR_COOKIES) \
-	--chromium-disable-javascript=$(CHROMIUM_DISABLE_JAVASCRIPT) \
-	--chromium-disable-routes=$(CHROMIUM_DISABLE_ROUTES) \
-	--libreoffice-restart-after=$(LIBREOFFICE_RESTART_AFTER) \
-	--libreoffice-max-queue-size=$(LIBREOFFICE_MAX_QUEUE_SIZE) \
-	--libreoffice-auto-start=$(LIBREOFFICE_AUTO_START) \
-	--libreoffice-start-timeout=$(LIBREOFFICE_START_TIMEOUT) \
-	--libreoffice-disable-routes=$(LIBREOFFICE_DISABLE_ROUTES) \
-	--log-level=$(LOG_LEVEL) \
-	--log-format=$(LOG_FORMAT) \
-	--log-fields-prefix=$(LOG_FIELDS_PREFIX) \
-	--log-enable-gcp-fields=$(LOG_ENABLE_GCP_FIELDS) \
-	--pdfengines-merge-engines=$(PDFENGINES_MERGE_ENGINES) \
-	--pdfengines-split-engines=$(PDFENGINES_SPLIT_ENGINES) \
-	--pdfengines-flatten-engines=$(PDFENGINES_FLATTEN_ENGINES) \
-	--pdfengines-convert-engines=$(PDFENGINES_CONVERT_ENGINES) \
-	--pdfengines-read-metadata-engines=$(PDFENGINES_READ_METADATA_ENGINES) \
-	--pdfengines-write-metadata-engines=$(PDFENGINES_WRITE_METADATA_ENGINES) \
-	--pdfengines-encrypt-engines=$(PDFENGINES_ENCRYPT_ENGINES) \
-	--pdfengines-disable-routes=$(PDFENGINES_DISABLE_ROUTES) \
-	--pdfengines-embed-engines=$(PDFENGINES_EMBED_ENGINES) \
-	--prometheus-namespace=$(PROMETHEUS_NAMESPACE) \
-	--prometheus-collect-interval=$(PROMETHEUS_COLLECT_INTERVAL) \
-	--prometheus-disable-route-logging=$(PROMETHEUS_DISABLE_ROUTE_LOGGING) \
-	--prometheus-disable-collect=$(PROMETHEUS_DISABLE_COLLECT) \
-	--prometheus-metrics-path=$(PROMETHEUS_METRICS_PATH) \
-	--webhook-enable-sync-mode="$(WEBHOOK_ENABLE_SYNC_MODE)" \
-	--webhook-allow-list="$(WEBHOOK_ALLOW_LIST)" \
-	--webhook-deny-list="$(WEBHOOK_DENY_LIST)" \
-	--webhook-error-allow-list=$(WEBHOOK_ERROR_ALLOW_LIST) \
-	--webhook-error-deny-list=$(WEBHOOK_ERROR_DENY_LIST) \
-	--webhook-max-retry=$(WEBHOOK_MAX_RETRY) \
-	--webhook-retry-min-wait=$(WEBHOOK_RETRY_MIN_WAIT) \
-	--webhook-retry-max-wait=$(WEBHOOK_RETRY_MAX_WAIT) \
-	--webhook-client-timeout=$(WEBHOOK_CLIENT_TIMEOUT) \
-	--webhook-disable=$(WEBHOOK_DISABLE)
+run: ## Start a Gotenberg container via Compose
+	docker compose up gotenberg
+
+.PHONY: telemetry
+telemetry: ## Start an OpenTelemetry collector and OpenObserve containers via Compose
+	docker compose up otel-collector openobserve
+
+.PHONY: down
+down: ## Stop all containers
+	docker compose down -v
 
 .PHONY: test-unit
 test-unit: ## Run unit tests
@@ -172,6 +144,9 @@ NO_CONCURRENCY=false
 # chromium-convert-html
 # chromium-convert-markdown
 # chromium-convert-url
+# chromium-screenshot-html
+# chromium-screenshot-markdown
+# chromium-screenshot-url
 # debug
 # health
 # libreoffice
@@ -191,6 +166,15 @@ NO_CONCURRENCY=false
 # metadata
 # pdfengines-split
 # split
+# pdfengines-watermark
+# watermark
+# pdfengines-stamp
+# stamp
+# pdfengines-rotate
+# rotate
+# factur-x
+# pdfengines-bookmarks
+# bookmarks
 # prometheus-metrics
 # root
 # version
@@ -199,7 +183,7 @@ NO_CONCURRENCY=false
 TAGS=
 
 .PHONY: test-integration
-test-integration: ## Run integration tests
+test-integration: ## Run integration tests (automatically retries failed scenarios up to 3 times)
 	go test -timeout 40m -tags=integration -v github.com/gotenberg/gotenberg/v8/test/integration -args \
 	--gotenberg-docker-repository=$(DOCKER_REPOSITORY) \
 	--gotenberg-version=$(GOTENBERG_VERSION) \

README.md

@@ -1,7 +1,7 @@
 <p align="center">
-    <img src="https://user-images.githubusercontent.com/8983173/130322857-185831e2-f041-46eb-a17f-0a69d066c4e5.png" alt="Gotenberg Logo" width="150" height="150" />
+    <img src="https://raw.githubusercontent.com/gotenberg/art/master/logo.png" alt="Gotenberg Logo" width="150" height="150" />
     <h3 align="center">Gotenberg</h3>
-    <p align="center">A containerized API for seamless PDF conversion</p>
+    <p align="center">A Docker-based API for converting documents to PDF</p>
     <p align="center">
         <a href="https://hub.docker.com/r/gotenberg/gotenberg"><img alt="Total downloads (gotenberg/gotenberg)" src="https://img.shields.io/docker/pulls/gotenberg/gotenberg"></a>
         <a href="https://github.com/gotenberg/gotenberg/actions/workflows/continuous-integration.yml"><img alt="Continuous Integration" src="https://github.com/gotenberg/gotenberg/actions/workflows/continuous-integration.yml/badge.svg"></a>
@@ -10,38 +10,61 @@
     <p align="center">
         <a href="https://trendshift.io/repositories/2996"><img src="https://trendshift.io/api/badge/repositories/2996" alt="gotenberg%2Fgotenberg | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>
     </p>
-    <p align="center"><a href="https://gotenberg.dev/docs/getting-started/introduction">Read the Documentation</a> &#183; <a href="https://gotenberg.dev/docs/getting-started/installation#live-demo-">Try the Live Demo</a> 🔥</p>
+    <p align="center">
+        <a href="https://gotenberg.dev/docs/getting-started/introduction"><strong>Documentation</strong></a> &#183;
+        <a href="https://gotenberg.dev/docs/getting-started/installation#live-demo"><strong>Live Demo</strong></a> &#183;
+        <a href="https://github.com/gotenberg/gotenberg/discussions"><strong>Community</strong></a>
+    </p>
 </p>
 
 ---
 
-**Gotenberg** is a containerized API that abstracts the complexity of PDF conversion.
+**Gotenberg** is a Docker-based API for converting documents to PDF. Trusted in production by thousands of companies. Also adopted by notable open-source projects.
 
-It provides a `multipart/form-data` interface for interacting with powerful engines like Chromium and LibreOffice.
-Instead of managing heavy dependencies, browser versions, or fonts in your own backend, simply send your files to
-Gotenberg and get a PDF in return.
+Send your files via `multipart/form-data`, get a PDF back. No need to manage Chromium, LibreOffice, or fonts yourself.
 
 ## Quick Start
 
-Open a terminal and run the following command:
-
 ```bash
 docker run --rm -p 3000:3000 gotenberg/gotenberg:8
 ```
 
-With the API running at `http://localhost:3000`, you are now ready to head
-to the **[Full Documentation](https://gotenberg.dev/docs/getting-started/introduction)** to discover how to convert URLs,
-local files, inject custom CSS, merge PDFs, and more.
+Convert a URL to PDF:
+
+```bash
+curl \
+  --request POST http://localhost:3000/forms/chromium/convert/url \
+  --form url=https://sparksuite.github.io/simple-html-invoice-template/ \
+  -o invoice.pdf
+```
+
+## Features
+
+- **HTML, URL, Markdown to PDF** via Headless Chromium
+- **Office documents to PDF** via LibreOffice (100+ formats)
+- **Merge, split, rotate, flatten** PDFs
+- **Watermark, stamp, encrypt** PDFs
+- **PDF/A and PDF/UA** compliance
+- **Screenshots** of URLs and HTML
+- **Read/write metadata and bookmarks**
+
+See the [full documentation](https://gotenberg.dev/docs/getting-started/introduction).
+
+## Contributing
+
+Questions and feedback: [GitHub Discussions](https://github.com/gotenberg/gotenberg/discussions).
+Bug reports: [GitHub Issues](https://github.com/gotenberg/gotenberg/issues).
 
 ## Sponsors
 
-Open-source development takes a significant amount of time, energy, and dedication. If Gotenberg helps streamline your
-workflow or powers your business, please consider supporting its continuous improvement by [**becoming a sponsor**](https://github.com/sponsors/gulien)! ❤️
+If Gotenberg powers your workflow or your business, consider [**becoming a sponsor**](https://github.com/sponsors/gulien).
 
 **Historic & GitHub Sponsors**
 
 - [TheCodingMachine](https://thecodingmachine.com/)
 - [pdfme](https://pdfme.com/)
+- [PDFBolt](https://pdfbolt.com)
+- [FileToPDF.dev](https://filetopdf.dev)
 
 **Powered By**
 

SECURITY.md

@@ -2,40 +2,28 @@
 
 ## Supported Versions
 
-Please ensure to keep your environment up to date and use only the latest version of Gotenberg.
-Security updates and patches will be applied only to the most recent version.
+Only the latest version receives security updates and patches. Keep your environment up to date.
 
 ## Reporting a Vulnerability
 
-Your help in identifying vulnerabilities in our project is much appreciated.
-We take all reports regarding security seriously.
+Do not publish vulnerabilities publicly. Report them through [GitHub's private vulnerability reporting](https://github.com/gotenberg/gotenberg/security/advisories/new).
 
-If you discover a security vulnerability, please refrain from publishing it publicly.
-Instead, kindly send us the details via email to _neuhart [dot] julien [at] gmail [dot] com_.
-
-In the subject of your email, please indicate that it's a security vulnerability report for Gotenberg.
-In your message, please include:
+Include:
 
 - A detailed description of the vulnerability.
-- The steps to reproduce the issue.
-- Any potential impact of the vulnerability on the users or system.
+- Steps to reproduce the issue.
+- Potential impact on users or the system.
 
-Please remember that this process is done in a _'best-effort'_ manner.
-This means we strive to respond and act as quickly as possible, but the speed may vary depending on the severity of
-the issue and our resources.
-
-Thank you in advance for helping to keep our project safe!
+This process is handled on a best-effort basis. Response speed may vary depending on severity and available resources.
 
 ## Disclosure Policy
 
-Once we have received your vulnerability report, we will work to validate and reproduce the issue.
-If we can confirm the vulnerability, we will proceed to:
+Once a report is received and confirmed:
 
-- Work on a fix and a release timeline.
-- Notify you when the fix has been implemented and released.
-- Credit you for discovering the vulnerability (unless you request anonymity).
-- Please note that we will do our best to keep you informed about the progress towards resolving the issue.
+- A fix and release timeline will be prepared.
+- The reporter will be notified when the fix is released.
+- The reporter will be credited for the discovery (unless anonymity is requested).
 
 ## Comments on this Policy
 
-If you have suggestions on how this process could be improved, please submit a pull request.
+Submit a pull request with suggestions for improving this process.

build/Dockerfile

@@ -1,7 +1,7 @@
 # ARG instructions do not create additional layers. Instead, next layers will
 # concatenate them. Also, we have to repeat ARG instructions in each build
 # stage that uses them.
-ARG GOLANG_VERSION=1.26.0
+ARG GOLANG_VERSION=1.26.5
 
 # ----------------------------------------------
 # pdfcpu binary build stage
@@ -11,22 +11,22 @@ ARG GOLANG_VERSION=1.26.0
 FROM golang:$GOLANG_VERSION AS pdfcpu-binary-stage
 
 # See https://github.com/pdfcpu/pdfcpu/releases.
-ARG PDFCPU_VERSION=v0.11.1
+ARG PDFCPU_VERSION=v0.13.0
 ENV CGO_ENABLED=0
 
 # Define the working directory outside of $GOPATH (we're using go modules).
 WORKDIR /home
 
-RUN curl -Ls "https://github.com/pdfcpu/pdfcpu/archive/refs/tags/$PDFCPU_VERSION.tar.gz" -o pdfcpu.tar.gz &&\
-    tar --strip-components=1 -xvzf pdfcpu.tar.gz
+RUN curl -Ls "https://github.com/pdfcpu/pdfcpu/archive/refs/tags/$PDFCPU_VERSION.tar.gz" -o pdfcpu.tar.gz \
+    && tar --strip-components=1 -xvzf pdfcpu.tar.gz
 
 # Install module dependencies.
-RUN go mod download &&\
-    go mod verify
+RUN go mod download \
+    && go mod verify
 
-RUN go build -o pdfcpu -ldflags "-s -w -X 'main.version=$PDFCPU_VERSION' -X 'github.com/pdfcpu/pdfcpu/pkg/pdfcpu.VersionStr=$PDFCPU_VERSION' -X main.builtBy=gotenberg" ./cmd/pdfcpu &&\
+RUN go build -o pdfcpu -ldflags "-s -w -X 'main.version=$PDFCPU_VERSION' -X 'github.com/pdfcpu/pdfcpu/pkg/pdfcpu/model.VersionStr=$PDFCPU_VERSION' -X main.builtBy=gotenberg" ./cmd/pdfcpu \
     # Verify installation.
-    ./pdfcpu version
+    && ./pdfcpu version
 
 # ----------------------------------------------
 # Gotenberg binary build stage
@@ -42,14 +42,16 @@ WORKDIR /home
 # Install module dependencies.
 COPY go.mod go.sum ./
 
-RUN go mod download &&\
-    go mod verify
+RUN go mod download \
+    && go mod verify
 
 # Copy the source code.
 COPY cmd ./cmd
 COPY pkg ./pkg
 
-RUN go build -o gotenberg -ldflags "-s -w -X 'github.com/gotenberg/gotenberg/v8/cmd.Version=$GOTENBERG_VERSION'" cmd/gotenberg/main.go
+RUN go build -o gotenberg -ldflags "-s -w -X 'github.com/gotenberg/gotenberg/v8/cmd.Version=$GOTENBERG_VERSION'" cmd/gotenberg/main.go \
+    && go build -o gotenberg-chromium -ldflags "-s -w -X 'github.com/gotenberg/gotenberg/v8/cmd.Version=$GOTENBERG_VERSION'" cmd/gotenberg-chromium/main.go \
+    && go build -o gotenberg-libreoffice -ldflags "-s -w -X 'github.com/gotenberg/gotenberg/v8/cmd.Version=$GOTENBERG_VERSION'" cmd/gotenberg-libreoffice/main.go
 
 # ----------------------------------------------
 # Custom JRE stage
@@ -57,10 +59,9 @@ RUN go build -o gotenberg -ldflags "-s -w -X 'github.com/gotenberg/gotenberg/v8/
 # ----------------------------------------------
 FROM debian:13-slim AS custom-jre-stage
 
-RUN \
-    apt-get update -qq &&\
-    apt-get upgrade -yqq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends default-jdk-headless binutils
+RUN apt-get update -qq \
+    && apt-get upgrade -yqq \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends default-jdk-headless binutils
 
 # Note: jdeps helps finding which modules a JAR requires.
 # Currently only for PDFtk, as we don't rely on LibreOffice UNO Java SDK.
@@ -74,6 +75,25 @@ RUN jlink \
     --compress=2 \
     --output /custom-jre
 
+# ----------------------------------------------
+# Downloader stage
+# ----------------------------------------------
+FROM debian:13-slim AS downloader-stage
+
+# See https://gitlab.com/pdftk-java/pdftk/-/releases - Binary package.
+ARG PDFTK_VERSION=v3.3.3
+
+RUN apt-get update -qq \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends curl ca-certificates
+
+WORKDIR /downloads
+
+RUN curl -Ls https://raw.githubusercontent.com/gotenberg/unoconverter/v0.4.0/unoconv -o unoconverter \
+    && chmod +x unoconverter
+
+RUN curl -o pdftk-all.jar "https://gitlab.com/api/v4/projects/5024297/packages/generic/pdftk-java/$PDFTK_VERSION/pdftk-all.jar" \
+    && chmod a+x pdftk-all.jar
+
 # ----------------------------------------------
 # Base image stage
 # ----------------------------------------------
@@ -82,125 +102,80 @@ FROM debian:13-slim AS base-image-stage
 ARG TIMEZONE=UTC
 ENV TZ=$TIMEZONE
 
-COPY --from=custom-jre-stage /custom-jre /opt/java
+COPY --link --from=custom-jre-stage /custom-jre /opt/java
 
 ENV PATH="/opt/java/bin:${PATH}"
 
 # ----------------------------------------------
-# Final stage
+# Common stage
 # ----------------------------------------------
-FROM base-image-stage
+FROM base-image-stage AS common-stage
 
-ARG GOTENBERG_VERSION=snapshot
 ARG GOTENBERG_USER_GID=1001
 ARG GOTENBERG_USER_UID=1001
-# See https://github.com/googlefonts/noto-emoji/releases.
-ARG NOTO_COLOR_EMOJI_VERSION=v2.051
-# See https://gitlab.com/pdftk-java/pdftk/-/releases - Binary package.
-ARG PDFTK_VERSION=v3.3.3
 
-LABEL org.opencontainers.image.title="Gotenberg" \
-    org.opencontainers.image.description="A containerized API for seamless PDF conversion." \
-    org.opencontainers.image.version="$GOTENBERG_VERSION" \
-    org.opencontainers.image.authors="Julien Neuhart <neuhart.julien@gmail.com>" \
-    org.opencontainers.image.documentation="https://gotenberg.dev" \
-    org.opencontainers.image.source="https://github.com/gotenberg/gotenberg"
+# Create a non-root user.
+# All processes in the Docker container will run with this dedicated user.
+RUN groupadd --gid "$GOTENBERG_USER_GID" gotenberg \
+    && useradd --uid "$GOTENBERG_USER_UID" --gid gotenberg --shell /bin/bash --home /home/gotenberg --no-create-home gotenberg \
+    && mkdir /home/gotenberg \
+    && chown gotenberg: /home/gotenberg
 
-RUN \
-    # Create a non-root user.
-    # All processes in the Docker container will run with this dedicated user.
-    groupadd --gid "$GOTENBERG_USER_GID" gotenberg &&\
-    useradd --uid "$GOTENBERG_USER_UID" --gid gotenberg --shell /bin/bash --home /home/gotenberg --no-create-home gotenberg &&\
-    mkdir /home/gotenberg &&\
-    chown gotenberg: /home/gotenberg
-
-RUN \
-    # Install system dependencies required for the next instructions or debugging.
-    # Note: tini is a helper for reaping zombie processes.
-    apt-get update -qq &&\
-    apt-get upgrade -yqq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends curl gnupg tini python3 python3-distutils-extra &&\
+# Note: tini is a helper for reaping zombie processes.
+RUN apt-get update -qq \
+    && apt-get upgrade -yqq \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends \
+        ca-certificates \
+        tini \
+        # Many users rely on curl for Docker health checks.
+        curl \
+        # Install fonts.
+        # Essential metric-compatible fonts for LibreOffice layout fidelity (replaces MS Fonts).
+        fonts-crosextra-carlito \
+        fonts-crosextra-caladea \
+        fonts-liberation \
+        fonts-liberation2 \
+        # Reliable general-purpose fallback for Chromium.
+        fonts-dejavu \
+        # Unified CJK (Chinese, Japanese, Korean) support.
+        fonts-noto-cjk \
+        # Standard Emoji support.
+        fonts-noto-color-emoji \
+        # Tofu prevention.
+        fonts-noto-core \
+        # Install QPDF & ExifTool (PDF engines).
+        qpdf exiftool \
+    # See https://github.com/nextcloud/docker/issues/380.
+    && mkdir -p /usr/share/man/man1 \
     # Cleanup.
-    # Note: the Debian image does automatically a clean after each install thanks to a hook.
-    # Therefore, there is no need for apt-get clean.
-    # See https://stackoverflow.com/a/24417119/3248473.
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-RUN \
-    # Install fonts.
-    # Credits:
-    # https://github.com/arachnys/athenapdf/blob/master/cli/Dockerfile.
-    # https://help.accusoft.com/PrizmDoc/v12.1/HTML/Installing_Asian_Fonts_on_Ubuntu_and_Debian.html.
-    curl -o ./ttf-mscorefonts-installer_3.8.1_all.deb http://httpredir.debian.org/debian/pool/contrib/m/msttcorefonts/ttf-mscorefonts-installer_3.8.1_all.deb &&\
-    apt-get update -qq &&\
-    apt-get upgrade -yqq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends \
-    ./ttf-mscorefonts-installer_3.8.1_all.deb \
-    culmus \
-    fonts-beng \
-    fonts-hosny-amiri \
-    fonts-lklug-sinhala \
-    fonts-lohit-guru \
-    fonts-lohit-knda \
-    fonts-samyak-gujr \
-    fonts-samyak-mlym \
-    fonts-samyak-taml \
-    fonts-sarai \
-    fonts-sil-abyssinica \
-    fonts-sil-padauk \
-    fonts-telu \
-    fonts-thai-tlwg \
-    ttf-wqy-zenhei \
-    fonts-arphic-ukai \
-    fonts-arphic-uming \
-    fonts-ipafont-mincho \
-    fonts-ipafont-gothic \
-    fonts-unfonts-core \
-    # LibreOffice recommends.
-    fonts-crosextra-caladea \
-    fonts-crosextra-carlito \
-    fonts-dejavu \
-    fonts-liberation \
-    fonts-liberation2 \
-    fonts-linuxlibertine \
-    fonts-noto-cjk \
-    fonts-noto-core \
-    fonts-noto-mono \
-    fonts-noto-ui-core \
-    fonts-sil-gentium \
-    fonts-sil-gentium-basic &&\
-    rm -f ./ttf-mscorefonts-installer_3.8.1_all.deb &&\
-    # Add Color and Black-and-White Noto emoji font.
-    # Credits:
-    # https://github.com/gotenberg/gotenberg/pull/325.
-    # https://github.com/googlefonts/noto-emoji.
-    curl -Ls "https://github.com/googlefonts/noto-emoji/raw/$NOTO_COLOR_EMOJI_VERSION/fonts/NotoColorEmoji.ttf" -o /usr/local/share/fonts/NotoColorEmoji.ttf &&\
-    # Cleanup.
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+# PDFtk bash wrapper.
+# See https://github.com/gotenberg/gotenberg/pull/273.
+RUN printf '#!/bin/bash\n\nexec java -jar /usr/bin/pdftk-all.jar "$@"' > /usr/bin/pdftk \
+    && chmod +x /usr/bin/pdftk
 
-RUN \
-    # Install Hyphenation for LibreOffice.
-    # Credits: https://wiki.archlinux.org/title/LibreOffice.
-    apt-get update -qq &&\
-    apt-get upgrade -yqq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends \
-        hyphen-af hyphen-as hyphen-be hyphen-bg hyphen-bn hyphen-ca hyphen-cs hyphen-da hyphen-de hyphen-el \
-        hyphen-en-gb hyphen-en-us hyphen-eo hyphen-es hyphen-fr hyphen-gl hyphen-gu hyphen-hi hyphen-hr hyphen-hu \
-        hyphen-id hyphen-is hyphen-it hyphen-kn hyphen-lt hyphen-lv hyphen-ml hyphen-mn hyphen-mr hyphen-nl \
-        hyphen-no hyphen-or hyphen-pa hyphen-pl hyphen-pt-br hyphen-pt-pt hyphen-ro hyphen-ru hyphen-sk hyphen-sl \
-        hyphen-sr hyphen-sv hyphen-ta hyphen-te hyphen-th hyphen-uk hyphen-zu &&\
-    # Cleanup.
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+# Support for arbitrary user IDs (OpenShift).
+# See:
+# https://github.com/gotenberg/gotenberg/issues/1049.
+# https://docs.redhat.com/en/documentation/openshift_container_platform/4.15/html/images/creating-images#use-uid_create-images.
+RUN usermod -aG root gotenberg \
+    && chgrp -R 0 /home/gotenberg \
+    && chmod -R g=u /home/gotenberg
 
-RUN \
-    # Install Chromium.
-    apt-get update -qq &&\
-    apt-get upgrade -yqq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends chromium &&\
-    # Verify installation.
-    chromium --version &&\
-    # Cleanup.
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+# COPY instructions last to maximize cache reuse when only source code changes.
+
+# Improve fonts subpixel hinting and smoothing.
+# Credits:
+# https://github.com/arachnys/athenapdf/issues/69.
+# https://github.com/arachnys/athenapdf/commit/ba25a8d80a25d08d58865519c4cd8756dc9a336d.
+COPY --link build/fonts.conf /etc/fonts/conf.d/100-gotenberg.conf
+
+# Copy PDFtk jar.
+COPY --link --from=downloader-stage /downloads/pdftk-all.jar /usr/bin/pdftk-all.jar
+
+# Copy the pdfcpu binary (shared across all variants).
+COPY --link --from=pdfcpu-binary-stage /home/pdfcpu /usr/bin/
 
 # Set default characterset encoding to UTF-8.
 # See:
@@ -209,74 +184,108 @@ RUN \
 ENV LANG=C.UTF-8
 ENV LC_ALL=C.UTF-8
 
-RUN \
-    # Install LibreOffice & unoconverter. \
-    echo "deb http://deb.debian.org/debian trixie-backports main" >> /etc/apt/sources.list &&\
-    apt-get update -qq &&\
-    apt-get upgrade -yqq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends -t trixie-backports libreoffice &&\
-    curl -Ls https://raw.githubusercontent.com/gotenberg/unoconverter/v0.2.0/unoconv -o /usr/bin/unoconverter &&\
-    chmod +x /usr/bin/unoconverter &&\
-    # unoconverter will look for the Python binary, which has to be at version 3.
-    ln -s /usr/bin/python3 /usr/bin/python &&\
-    # Verify installations.
-    libreoffice --version &&\
-    unoconverter --version &&\
-    # Cleanup.
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
-RUN \
-    # Install PDFtk, QPDF & ExifTool (PDF engines).
-    # See https://github.com/gotenberg/gotenberg/pull/273.
-    curl -o /usr/bin/pdftk-all.jar "https://gitlab.com/api/v4/projects/5024297/packages/generic/pdftk-java/$PDFTK_VERSION/pdftk-all.jar" &&\
-    chmod a+x /usr/bin/pdftk-all.jar &&\
-    printf '#!/bin/bash\n\nexec java -jar /usr/bin/pdftk-all.jar "$@"' > /usr/bin/pdftk && \
-    chmod +x /usr/bin/pdftk &&\
-    apt-get update -qq &&\
-    apt-get upgrade -yqq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends qpdf exiftool &&\
-    # See https://github.com/nextcloud/docker/issues/380.
-    mkdir -p /usr/share/man/man1 &&\
-    # Verify installations.
-    pdftk --version &&\
-    qpdf --version &&\
-    exiftool --version &&\
-    # Cleanup.
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
-# Support for arbitrary user IDs (OpenShift).
-# See:
-# https://github.com/gotenberg/gotenberg/issues/1049.
-# https://docs.redhat.com/en/documentation/openshift_container_platform/4.15/html/images/creating-images#use-uid_create-images.
-RUN \
-    usermod -aG root gotenberg &&\
-    chgrp -R 0 /home/gotenberg &&\
-    chmod -R g=u /home/gotenberg
-
-# Improve fonts subpixel hinting and smoothing.
-# Credits:
-# https://github.com/arachnys/athenapdf/issues/69.
-# https://github.com/arachnys/athenapdf/commit/ba25a8d80a25d08d58865519c4cd8756dc9a336d.
-COPY build/fonts.conf /etc/fonts/conf.d/100-gotenberg.conf
-
-# Copy dictionnaries so that hypens work on Chromium.
-# See https://github.com/gotenberg/gotenberg/issues/1293.
-COPY --chown=gotenberg:gotenberg build/chromium-hyphen-data /opt/gotenberg/chromium-hyphen-data
-
-# Copy the Golang binaries.
-COPY --from=pdfcpu-binary-stage /home/pdfcpu /usr/bin/
-COPY --from=gotenberg-binary-stage /home/gotenberg /usr/bin/
-
-# Environment variables required by modules or else.
-ENV CHROMIUM_BIN_PATH=/usr/bin/chromium
-ENV CHROMIUM_HYPHEN_DATA_DIR_PATH=/opt/gotenberg/chromium-hyphen-data
-ENV LIBREOFFICE_BIN_PATH=/usr/lib/libreoffice/program/soffice.bin
-ENV UNOCONVERTER_BIN_PATH=/usr/bin/unoconverter
+# Environment variables for PDF engines.
 ENV PDFTK_BIN_PATH=/usr/bin/pdftk
 ENV QPDF_BIN_PATH=/usr/bin/qpdf
 ENV EXIFTOOL_BIN_PATH=/usr/bin/exiftool
 ENV PDFCPU_BIN_PATH=/usr/bin/pdfcpu
 
+# Capture backing-binary versions at build time so the running process reports
+# them on traces without spawning the binaries at startup or per request.
+# See pkg/gotenberg/buildversions.go. Chromium and LibreOffice are captured in
+# the variant stages below, where they are installed.
+ENV GOTENBERG_VERSIONS_DIR_PATH=/opt/gotenberg/versions
+
+COPY --link build/capture-version.sh /opt/gotenberg/capture-version.sh
+
+RUN bash /opt/gotenberg/capture-version.sh "$GOTENBERG_VERSIONS_DIR_PATH" qpdf "$QPDF_BIN_PATH" --version \
+    && bash /opt/gotenberg/capture-version.sh "$GOTENBERG_VERSIONS_DIR_PATH" exiftool "$EXIFTOOL_BIN_PATH" -ver \
+    && bash /opt/gotenberg/capture-version.sh "$GOTENBERG_VERSIONS_DIR_PATH" pdftk "$PDFTK_BIN_PATH" --version \
+    && bash /opt/gotenberg/capture-version.sh "$GOTENBERG_VERSIONS_DIR_PATH" pdfcpu "$PDFCPU_BIN_PATH" version
+
+# OpenTelemetry defaults (noop - no telemetry overhead unless explicitly enabled).
+ENV OTEL_TRACES_EXPORTER=none
+ENV OTEL_METRICS_EXPORTER=none
+ENV OTEL_LOGS_EXPORTER=none
+
+# ----------------------------------------------
+# Final stage: full (Chromium + LibreOffice)
+# ----------------------------------------------
+FROM common-stage AS gotenberg
+
+ARG GOTENBERG_VERSION=snapshot
+ARG GOTENBERG_USER_GID=1001
+ARG GOTENBERG_USER_UID=1001
+ARG TMP_CHROMIUM_VERSION_PPC64EL="146.0.7680.80-1~deb13u1"
+
+LABEL org.opencontainers.image.title="Gotenberg" \
+    org.opencontainers.image.description="A Docker-based API for converting documents to PDF." \
+    org.opencontainers.image.version="$GOTENBERG_VERSION" \
+    org.opencontainers.image.authors="Julien Neuhart <neuhart.julien@gmail.com>" \
+    org.opencontainers.image.documentation="https://gotenberg.dev" \
+    org.opencontainers.image.source="https://github.com/gotenberg/gotenberg"
+
+# Install Chromium.
+# On ppc64el, the latest Chromium is broken, so we pin a known working
+# version from snapshot.debian.org via debsnap.
+RUN /bin/bash -c \
+    'set -e &&\
+    if [[ "$(dpkg --print-architecture)" == "ppc64el" ]]; then \
+      apt-get update -qq &&\
+      DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends devscripts &&\
+      debsnap chromium-common "$TMP_CHROMIUM_VERSION_PPC64EL" -v --force --binary --architecture ppc64el &&\
+      debsnap chromium "$TMP_CHROMIUM_VERSION_PPC64EL" -v --force --binary --architecture ppc64el &&\
+      DEBIAN_FRONTEND=noninteractive apt-get install --fix-broken -y -qq --no-install-recommends "./binary-chromium-common/chromium-common_${TMP_CHROMIUM_VERSION_PPC64EL}_ppc64el.deb" "./binary-chromium/chromium_${TMP_CHROMIUM_VERSION_PPC64EL}_ppc64el.deb" &&\
+      DEBIAN_FRONTEND=noninteractive apt-get purge -y -qq devscripts &&\
+      rm -rf ./binary-chromium-common/* ./binary-chromium/*; \
+    else \
+      apt-get update -qq &&\
+      apt-get upgrade -yqq &&\
+      DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends chromium; \
+    fi' \
+    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+# Install LibreOffice & unoconverter.
+RUN echo "deb http://deb.debian.org/debian trixie-backports main" >> /etc/apt/sources.list \
+    && apt-get update -qq \
+    && apt-get upgrade -yqq \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends \
+        python3 python3-distutils-extra \
+        # Install Hyphenation for LibreOffice.
+        # Credits: https://wiki.archlinux.org/title/LibreOffice.
+        hyphen-af hyphen-as hyphen-be hyphen-bg hyphen-bn hyphen-ca hyphen-cs hyphen-da hyphen-de hyphen-el \
+        hyphen-en-gb hyphen-en-us hyphen-eo hyphen-es hyphen-fr hyphen-gl hyphen-gu hyphen-hi hyphen-hr hyphen-hu \
+        hyphen-id hyphen-is hyphen-it hyphen-kn hyphen-lt hyphen-lv hyphen-ml hyphen-mn hyphen-mr hyphen-nl \
+        hyphen-no hyphen-or hyphen-pa hyphen-pl hyphen-pt-br hyphen-pt-pt hyphen-ro hyphen-ru hyphen-sk hyphen-sl \
+        hyphen-sr hyphen-sv hyphen-ta hyphen-te hyphen-th hyphen-uk hyphen-zu \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends -t trixie-backports \
+        libreoffice-writer libreoffice-calc libreoffice-impress libreoffice-draw python3-uno \
+    # unoconverter will look for the Python binary, which has to be at version 3.
+    && ln -s /usr/bin/python3 /usr/bin/python \
+    # Cleanup.
+    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+# COPY instructions last to maximize cache reuse.
+
+# Copy the Gotenberg binary (full variant with all modules).
+COPY --link --from=gotenberg-binary-stage /home/gotenberg /usr/bin/
+
+# Copy unoconverter.
+COPY --link --from=downloader-stage /downloads/unoconverter /usr/bin/unoconverter
+
+# Copy dictionnaries so that hyphens work on Chromium.
+# See https://github.com/gotenberg/gotenberg/issues/1293.
+COPY --link --chown="$GOTENBERG_USER_UID:$GOTENBERG_USER_GID" build/chromium-hyphen-data /opt/gotenberg/chromium-hyphen-data
+
+ENV CHROMIUM_BIN_PATH=/usr/bin/chromium
+ENV CHROMIUM_HYPHEN_DATA_DIR_PATH=/opt/gotenberg/chromium-hyphen-data
+ENV LIBREOFFICE_BIN_PATH=/usr/lib/libreoffice/program/soffice.bin
+ENV UNOCONVERTER_BIN_PATH=/usr/bin/unoconverter
+
+# Capture Chromium and LibreOffice versions now that both are installed.
+RUN bash /opt/gotenberg/capture-version.sh "$GOTENBERG_VERSIONS_DIR_PATH" chromium "$CHROMIUM_BIN_PATH" --version \
+    && bash /opt/gotenberg/capture-version.sh "$GOTENBERG_VERSIONS_DIR_PATH" libreoffice-api "$LIBREOFFICE_BIN_PATH" --version
+
 USER gotenberg
 WORKDIR /home/gotenberg
 
@@ -285,3 +294,240 @@ EXPOSE 3000
 
 ENTRYPOINT [ "/usr/bin/tini", "--" ]
 CMD [ "gotenberg" ]
+
+# ----------------------------------------------
+# Final stage: Chromium only
+# ----------------------------------------------
+FROM common-stage AS gotenberg-chromium
+
+ARG GOTENBERG_VERSION=snapshot
+ARG GOTENBERG_USER_GID=1001
+ARG GOTENBERG_USER_UID=1001
+ARG TMP_CHROMIUM_VERSION_PPC64EL="146.0.7680.80-1~deb13u1"
+
+LABEL org.opencontainers.image.title="Gotenberg (Chromium)" \
+    org.opencontainers.image.description="A Docker-based API for converting documents to PDF — Chromium variant." \
+    org.opencontainers.image.version="$GOTENBERG_VERSION" \
+    org.opencontainers.image.authors="Julien Neuhart <neuhart.julien@gmail.com>" \
+    org.opencontainers.image.documentation="https://gotenberg.dev" \
+    org.opencontainers.image.source="https://github.com/gotenberg/gotenberg"
+
+# Install Chromium.
+# On ppc64el, the latest Chromium is broken, so we pin a known working
+# version from snapshot.debian.org via debsnap.
+RUN /bin/bash -c \
+    'set -e &&\
+    if [[ "$(dpkg --print-architecture)" == "ppc64el" ]]; then \
+      apt-get update -qq &&\
+      DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends devscripts &&\
+      debsnap chromium-common "$TMP_CHROMIUM_VERSION_PPC64EL" -v --force --binary --architecture ppc64el &&\
+      debsnap chromium "$TMP_CHROMIUM_VERSION_PPC64EL" -v --force --binary --architecture ppc64el &&\
+      DEBIAN_FRONTEND=noninteractive apt-get install --fix-broken -y -qq --no-install-recommends "./binary-chromium-common/chromium-common_${TMP_CHROMIUM_VERSION_PPC64EL}_ppc64el.deb" "./binary-chromium/chromium_${TMP_CHROMIUM_VERSION_PPC64EL}_ppc64el.deb" &&\
+      DEBIAN_FRONTEND=noninteractive apt-get purge -y -qq devscripts &&\
+      rm -rf ./binary-chromium-common/* ./binary-chromium/*; \
+    else \
+      apt-get update -qq &&\
+      apt-get upgrade -yqq &&\
+      DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends chromium; \
+    fi' \
+    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+# COPY instructions last to maximize cache reuse.
+
+# Copy the Gotenberg binary (Chromium variant, no LibreOffice modules).
+COPY --link --from=gotenberg-binary-stage /home/gotenberg-chromium /usr/bin/gotenberg
+
+# Copy dictionnaries so that hyphens work on Chromium.
+# See https://github.com/gotenberg/gotenberg/issues/1293.
+COPY --link --chown="$GOTENBERG_USER_UID:$GOTENBERG_USER_GID" build/chromium-hyphen-data /opt/gotenberg/chromium-hyphen-data
+
+ENV CHROMIUM_BIN_PATH=/usr/bin/chromium
+ENV CHROMIUM_HYPHEN_DATA_DIR_PATH=/opt/gotenberg/chromium-hyphen-data
+# No LibreOffice in this variant; override the default to use all available engines.
+ENV PDFENGINES_CONVERT_ENGINES=
+
+# Capture the Chromium version now that it is installed.
+RUN bash /opt/gotenberg/capture-version.sh "$GOTENBERG_VERSIONS_DIR_PATH" chromium "$CHROMIUM_BIN_PATH" --version
+
+USER gotenberg
+WORKDIR /home/gotenberg
+
+# Default API port.
+EXPOSE 3000
+
+ENTRYPOINT [ "/usr/bin/tini", "--" ]
+CMD [ "gotenberg" ]
+
+# ----------------------------------------------
+# Final stage: LibreOffice only
+# ----------------------------------------------
+FROM common-stage AS gotenberg-libreoffice
+
+ARG GOTENBERG_VERSION=snapshot
+
+LABEL org.opencontainers.image.title="Gotenberg (LibreOffice)" \
+    org.opencontainers.image.description="A Docker-based API for converting documents to PDF — LibreOffice variant." \
+    org.opencontainers.image.version="$GOTENBERG_VERSION" \
+    org.opencontainers.image.authors="Julien Neuhart <neuhart.julien@gmail.com>" \
+    org.opencontainers.image.documentation="https://gotenberg.dev" \
+    org.opencontainers.image.source="https://github.com/gotenberg/gotenberg"
+
+# Install LibreOffice & unoconverter.
+RUN echo "deb http://deb.debian.org/debian trixie-backports main" >> /etc/apt/sources.list \
+    && apt-get update -qq \
+    && apt-get upgrade -yqq \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends \
+        python3 python3-distutils-extra \
+        # Install Hyphenation for LibreOffice.
+        # Credits: https://wiki.archlinux.org/title/LibreOffice.
+        hyphen-af hyphen-as hyphen-be hyphen-bg hyphen-bn hyphen-ca hyphen-cs hyphen-da hyphen-de hyphen-el \
+        hyphen-en-gb hyphen-en-us hyphen-eo hyphen-es hyphen-fr hyphen-gl hyphen-gu hyphen-hi hyphen-hr hyphen-hu \
+        hyphen-id hyphen-is hyphen-it hyphen-kn hyphen-lt hyphen-lv hyphen-ml hyphen-mn hyphen-mr hyphen-nl \
+        hyphen-no hyphen-or hyphen-pa hyphen-pl hyphen-pt-br hyphen-pt-pt hyphen-ro hyphen-ru hyphen-sk hyphen-sl \
+        hyphen-sr hyphen-sv hyphen-ta hyphen-te hyphen-th hyphen-uk hyphen-zu \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends -t trixie-backports \
+        libreoffice-writer libreoffice-calc libreoffice-impress libreoffice-draw python3-uno \
+    # unoconverter will look for the Python binary, which has to be at version 3.
+    && ln -s /usr/bin/python3 /usr/bin/python \
+    # Cleanup.
+    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+# COPY instructions last to maximize cache reuse.
+
+# Copy the Gotenberg binary (LibreOffice variant, no Chromium modules).
+COPY --link --from=gotenberg-binary-stage /home/gotenberg-libreoffice /usr/bin/gotenberg
+
+# Copy unoconverter.
+COPY --link --from=downloader-stage /downloads/unoconverter /usr/bin/unoconverter
+
+ENV LIBREOFFICE_BIN_PATH=/usr/lib/libreoffice/program/soffice.bin
+ENV UNOCONVERTER_BIN_PATH=/usr/bin/unoconverter
+
+# Capture the LibreOffice version now that it is installed.
+RUN bash /opt/gotenberg/capture-version.sh "$GOTENBERG_VERSIONS_DIR_PATH" libreoffice-api "$LIBREOFFICE_BIN_PATH" --version
+
+USER gotenberg
+WORKDIR /home/gotenberg
+
+# Default API port.
+EXPOSE 3000
+
+ENTRYPOINT [ "/usr/bin/tini", "--" ]
+CMD [ "gotenberg" ]
+
+# ==============================================================
+# Cloud Run variants
+# ==============================================================
+
+# ----------------------------------------------
+# Cloud Run: full (Chromium + LibreOffice)
+# ----------------------------------------------
+FROM gotenberg AS gotenberg-cloudrun
+
+USER root
+
+# For security reasons, the non-root user gotenberg does not own the Tini binary by default.
+# However, some providers like Cloud Run from Google Cloud cannot start a Docker container in that case.
+# See https://github.com/gotenberg/gotenberg/issues/90#issuecomment-543551353.
+RUN chown gotenberg: /usr/bin/tini
+
+ENV API_PORT_FROM_ENV=PORT
+ENV CHROMIUM_AUTO_START=true
+ENV LIBREOFFICE_AUTO_START=true
+ENV WEBHOOK_ENABLE_SYNC_MODE=true
+ENV GOTENBERG_BUILD_DEBUG_DATA=false
+ENV LOG_STD_ENABLE_GCP_FIELDS=true
+
+USER gotenberg
+
+# ----------------------------------------------
+# Cloud Run: Chromium only
+# ----------------------------------------------
+FROM gotenberg-chromium AS gotenberg-cloudrun-chromium
+
+USER root
+
+RUN chown gotenberg: /usr/bin/tini
+
+ENV API_PORT_FROM_ENV=PORT
+ENV CHROMIUM_AUTO_START=true
+ENV WEBHOOK_ENABLE_SYNC_MODE=true
+ENV GOTENBERG_BUILD_DEBUG_DATA=false
+ENV LOG_STD_ENABLE_GCP_FIELDS=true
+
+USER gotenberg
+
+# ----------------------------------------------
+# Cloud Run: LibreOffice only
+# ----------------------------------------------
+FROM gotenberg-libreoffice AS gotenberg-cloudrun-libreoffice
+
+USER root
+
+RUN chown gotenberg: /usr/bin/tini
+
+ENV API_PORT_FROM_ENV=PORT
+ENV LIBREOFFICE_AUTO_START=true
+ENV WEBHOOK_ENABLE_SYNC_MODE=true
+ENV GOTENBERG_BUILD_DEBUG_DATA=false
+ENV LOG_STD_ENABLE_GCP_FIELDS=true
+
+USER gotenberg
+
+# ==============================================================
+# AWS Lambda variants
+# ==============================================================
+
+# ----------------------------------------------
+# AWS Lambda: full (Chromium + LibreOffice)
+# ----------------------------------------------
+FROM gotenberg AS gotenberg-aws-lambda
+
+USER root
+
+COPY --from=public.ecr.aws/awsguru/aws-lambda-adapter:0.9.1 /lambda-adapter /opt/extensions/lambda-adapter
+
+ENV AWS_LWA_PORT=3000
+ENV AWS_LWA_READINESS_CHECK_PATH=/health
+ENV AWS_LWA_INVOKE_MODE=buffered
+ENV API_PORT_FROM_ENV=AWS_LWA_PORT
+ENV WEBHOOK_ENABLE_SYNC_MODE=true
+ENV GOTENBERG_BUILD_DEBUG_DATA=false
+
+USER gotenberg
+
+# ----------------------------------------------
+# AWS Lambda: Chromium only
+# ----------------------------------------------
+FROM gotenberg-chromium AS gotenberg-aws-lambda-chromium
+
+USER root
+
+COPY --from=public.ecr.aws/awsguru/aws-lambda-adapter:0.9.1 /lambda-adapter /opt/extensions/lambda-adapter
+
+ENV AWS_LWA_PORT=3000
+ENV AWS_LWA_READINESS_CHECK_PATH=/health
+ENV AWS_LWA_INVOKE_MODE=buffered
+ENV API_PORT_FROM_ENV=AWS_LWA_PORT
+ENV WEBHOOK_ENABLE_SYNC_MODE=true
+ENV GOTENBERG_BUILD_DEBUG_DATA=false
+
+USER gotenberg
+
+# ----------------------------------------------
+# AWS Lambda: LibreOffice only
+# ----------------------------------------------
+FROM gotenberg-libreoffice AS gotenberg-aws-lambda-libreoffice
+
+USER root
+
+COPY --from=public.ecr.aws/awsguru/aws-lambda-adapter:0.9.1 /lambda-adapter /opt/extensions/lambda-adapter
+
+ENV AWS_LWA_PORT=3000
+ENV AWS_LWA_READINESS_CHECK_PATH=/health
+ENV AWS_LWA_INVOKE_MODE=buffered
+ENV API_PORT_FROM_ENV=AWS_LWA_PORT
+ENV WEBHOOK_ENABLE_SYNC_MODE=true
+ENV GOTENBERG_BUILD_DEBUG_DATA=false
+
+USER gotenberg

build/Dockerfile.aws-lambda

@@ -1,21 +0,0 @@
-ARG DOCKER_REGISTRY
-ARG DOCKER_REPOSITORY
-ARG GOTENBERG_VERSION
-
-FROM $DOCKER_REGISTRY/$DOCKER_REPOSITORY:$GOTENBERG_VERSION
-
-USER root
-
-COPY --from=public.ecr.aws/awsguru/aws-lambda-adapter:0.9.1 /lambda-adapter /opt/extensions/lambda-adapter
-
-# AWS.
-ENV AWS_LWA_PORT=3000
-ENV AWS_LWA_READINESS_CHECK_PATH=/health
-ENV AWS_LWA_INVOKE_MODE=buffered
-
-# Gotenberg.
-ENV API_PORT_FROM_ENV=AWS_LWA_PORT
-ENV WEBHOOK_ENABLE_SYNC_MODE=true
-ENV GOTENBERG_BUILD_DEBUG_DATA=false
-
-USER gotenberg

build/Dockerfile.cloudrun

@@ -1,22 +0,0 @@
-ARG DOCKER_REGISTRY
-ARG DOCKER_REPOSITORY
-ARG GOTENBERG_VERSION
-
-FROM $DOCKER_REGISTRY/$DOCKER_REPOSITORY:$GOTENBERG_VERSION
-
-USER root
-
-# For security reasons, the non-root user gotenberg does not own the Tini binary by default.
-# However, some providers like Cloud Run from Google Cloud cannot start a Docker container in that case.
-# See https://github.com/gotenberg/gotenberg/issues/90#issuecomment-543551353.
-RUN chown gotenberg: /usr/bin/tini
-
-# Gotenberg.
-ENV API_PORT_FROM_ENV=PORT
-ENV CHROMIUM_AUTO_START=true
-ENV LIBREOFFICE_AUTO_START=true
-ENV WEBHOOK_ENABLE_SYNC_MODE=true
-ENV GOTENBERG_BUILD_DEBUG_DATA=false
-ENV LOG_ENABLE_GCP_FIELDS=true
-
-USER gotenberg

build/capture-version.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+# Captures the version of a backing binary into a per-module file that the
+# running Gotenberg process reads via gotenberg.BuildVersion, so it never spawns
+# the binary just to report a version. This keeps cold start and the first
+# request cheap, which matters on serverless platforms.
+#
+# Failure-tolerant by design: a probe that errors writes an empty file, and the
+# runtime falls back to detecting the version live. A failing probe must never
+# fail the image build.
+#
+# Usage: capture-version.sh <output-dir> <module-id> <bin> [args...]
+set -u
+
+dir="$1"
+id="$2"
+shift 2
+
+mkdir -p "$dir"
+
+# Run the probe once. On failure, keep going with empty output.
+raw="$("$@" 2>/dev/null)" || raw=""
+
+case "$id" in
+pdfcpu)
+    # pdfcpu prints "pdfcpu: <version>"; keep only the part the runtime parser
+    # keeps so the recorded value matches the live-detection fallback.
+    version="$(printf '%s\n' "$raw" | grep -m1 '^pdfcpu:' | sed 's/^pdfcpu:[[:space:]]*//')"
+    ;;
+*)
+    version="$(printf '%s\n' "$raw" | head -n1)"
+    ;;
+esac
+
+printf '%s' "$version" | tr -d '\r' >"$dir/$id"

cmd/gotenberg-chromium/main.go

@@ -0,0 +1,11 @@
+package main
+
+import (
+	gotenbergcmd "github.com/gotenberg/gotenberg/v8/cmd"
+	// Gotenberg modules (Chromium variant — no LibreOffice).
+	_ "github.com/gotenberg/gotenberg/v8/pkg/standard/chromium"
+)
+
+func main() {
+	gotenbergcmd.Run()
+}

cmd/gotenberg-libreoffice/main.go

@@ -0,0 +1,11 @@
+package main
+
+import (
+	gotenbergcmd "github.com/gotenberg/gotenberg/v8/cmd"
+	// Gotenberg modules (LibreOffice variant — no Chromium).
+	_ "github.com/gotenberg/gotenberg/v8/pkg/standard/libreoffice"
+)
+
+func main() {
+	gotenbergcmd.Run()
+}

cmd/gotenberg.go

@@ -25,7 +25,7 @@ const banner = `
 \___/\___/\__/\__/_//_/_.__/\__/_/  \_, / 
                                    /___/
 
-A containerized API for seamless PDF conversion.
+A Docker-based API for converting documents to PDF.
 Version: %s
 -------------------------------------------------------
 `
@@ -44,6 +44,25 @@ func Run() {
 	fs.Duration("gotenberg-graceful-shutdown-duration", time.Duration(30)*time.Second, "Set the graceful shutdown duration")
 	fs.Bool("gotenberg-build-debug-data", true, "Set if build data is needed")
 
+	// Logging & telemetry flags.
+	fs.String("log-level", gotenberg.InfoLoggingLevel, "Set the log level")
+	fs.String("log-fields-prefix", "", "Prepend a specified prefix to each log field key")
+	fs.String("log-std-format", gotenberg.AutoLoggingFormat, "Set the log format for standard output")
+	fs.Bool("log-std-enable-gcp-fields", false, "Use GCP-compatible field names in log output")
+	fs.String("log-std-level-case", gotenberg.LowerLevelCase, "Set the case of the level field in the standard output, either lower or upper")
+
+	// Deprecated logging flags.
+	fs.String("log-format", gotenberg.AutoLoggingFormat, "Set the log format")
+	fs.Bool("log-enable-gcp-fields", false, "Use GCP-compatible field names")
+
+	if err := errors.Join(
+		fs.MarkDeprecated("log-format", "use --log-std-format instead"),
+		fs.MarkDeprecated("log-enable-gcp-fields", "use --log-std-enable-gcp-fields instead"),
+	); err != nil {
+		fmt.Printf("[FATAL] mark deprecated flags: %s\n", err)
+		os.Exit(1)
+	}
+
 	descriptors := gotenberg.GetModuleDescriptors()
 	var modsInfo strings.Builder
 	for _, desc := range descriptors {
@@ -76,10 +95,11 @@ func Run() {
 				fmt.Printf("[FATAL] invalid overriding value '%s' from %s: %v\n", val, envName, err)
 				os.Exit(1)
 			}
+			f.Changed = true
 			return
 		}
 
-		err = f.Value.Set(val)
+		err = fs.Set(f.Name, val)
 		if err != nil {
 			fmt.Printf("[FATAL] invalid overriding value '%s' from %s: %v\n", val, envName, err)
 			os.Exit(1)
@@ -91,6 +111,36 @@ func Run() {
 	hideBanner := parsedFlags.MustBool("gotenberg-hide-banner")
 	gracefulShutdownDuration := parsedFlags.MustDuration("gotenberg-graceful-shutdown-duration")
 
+	// Initialize telemetry (logging + OTEL).
+	serviceName := os.Getenv("OTEL_SERVICE_NAME")
+	if serviceName == "" {
+		serviceName = "gotenberg"
+	}
+
+	telemetryCfg := gotenberg.TelemetryConfig{
+		ServiceName:           serviceName,
+		ServiceVersion:        Version,
+		LogLevel:              parsedFlags.MustDeprecatedString("log-format", "log-std-format"),
+		LogFieldsPrefix:       parsedFlags.MustString("log-fields-prefix"),
+		LogStdFormat:          parsedFlags.MustDeprecatedString("log-format", "log-std-format"),
+		LogStdEnableGcpFields: parsedFlags.MustDeprecatedBool("log-enable-gcp-fields", "log-std-enable-gcp-fields"),
+		LogStdLevelCase:       parsedFlags.MustString("log-std-level-case"),
+	}
+	// LogLevel uses its own flag, not the format flag.
+	telemetryCfg.LogLevel = parsedFlags.MustString("log-level")
+
+	err = telemetryCfg.Validate()
+	if err != nil {
+		fmt.Printf("[FATAL] invalid telemetry config: %s\n", err)
+		os.Exit(1)
+	}
+
+	shutdownTelemetry, err := gotenberg.StartTelemetry(telemetryCfg)
+	if err != nil {
+		fmt.Printf("[FATAL] start telemetry: %s\n", err)
+		os.Exit(1)
+	}
+
 	if !hideBanner {
 		fmt.Printf(banner, Version)
 	}
@@ -190,8 +240,17 @@ func Run() {
 
 	err = eg.Wait()
 	if err != nil {
+		cancel()
 		fmt.Printf("[FATAL] %v\n", err)
-		os.Exit(1)
+		os.Exit(1) //nolint:gocritic // defers are already called explicitly above
+	}
+
+	// Shutdown telemetry (flush spans, metrics, logs).
+	err = shutdownTelemetry(gracefulShutdownCtx)
+	if err != nil {
+		cancel()
+		fmt.Printf("[FATAL] %v\n", err)
+		os.Exit(1) //nolint:gocritic // defers are already called explicitly above
 	}
 
 	os.Exit(0)

compose.yaml

@@ -0,0 +1,138 @@
+services:
+  gotenberg:
+    image: ${DOCKER_REGISTRY}/${DOCKER_REPOSITORY}:${GOTENBERG_VERSION}
+    ports:
+      - "${API_PORT}:${API_PORT}"
+    environment:
+      GOTENBERG_API_BASIC_AUTH_USERNAME: ${GOTENBERG_API_BASIC_AUTH_USERNAME}
+      GOTENBERG_API_BASIC_AUTH_PASSWORD: ${GOTENBERG_API_BASIC_AUTH_PASSWORD}
+      OTEL_SERVICE_NAME: ${OTEL_SERVICE_NAME}
+      OTEL_TRACES_EXPORTER: ${OTEL_TRACES_EXPORTER}
+      OTEL_METRICS_EXPORTER: ${OTEL_METRICS_EXPORTER}
+      OTEL_LOGS_EXPORTER: ${OTEL_LOGS_EXPORTER}
+      OTEL_EXPORTER_OTLP_PROTOCOL: ${OTEL_EXPORTER_OTLP_PROTOCOL}
+      OTEL_EXPORTER_OTLP_ENDPOINT: ${OTEL_EXPORTER_OTLP_ENDPOINT}
+      OTEL_EXPORTER_OTLP_INSECURE: ${OTEL_EXPORTER_OTLP_INSECURE}
+    command:
+      - "gotenberg"
+      - "--gotenberg-hide-banner=${GOTENBERG_HIDE_BANNER}"
+      - "--gotenberg-graceful-shutdown-duration=${GOTENBERG_GRACEFUL_SHUTDOWN_DURATION}"
+      - "--gotenberg-build-debug-data=${GOTENBERG_BUILD_DEBUG_DATA}"
+      - "--api-port=${API_PORT}"
+      - "--api-port-from-env=${API_PORT_FROM_ENV}"
+      - "--api-bind-ip=${API_BIND_IP}"
+      - "--api-tls-cert-file=${API_TLS_CERT_FILE}"
+      - "--api-tls-key-file=${API_TLS_KEY_FILE}"
+      - "--api-start-timeout=${API_START_TIMEOUT}"
+      - "--api-timeout=${API_TIMEOUT}"
+      - "--api-body-limit=${API_BODY_LIMIT}"
+      - "--api-root-path=${API_ROOT_PATH}"
+      - "--api-correlation-id-header=${API_CORRELATION_ID_HEADER}"
+      - "--api-enable-basic-auth=${API_ENABLE_BASIC_AUTH}"
+      - "--api-download-from-allow-list=${API_DOWNLOAD_FROM_ALLOW_LIST}"
+      - "--api-download-from-deny-list=${API_DOWNLOAD_FROM_DENY_LIST}"
+      - "--api-download-from-deny-private-ips=${API_DOWNLOAD_FROM_DENY_PRIVATE_IPS}"
+      - "--api-download-from-deny-public-ips=${API_DOWNLOAD_FROM_DENY_PUBLIC_IPS}"
+      - "--api-download-from-enable-environment-proxy=${API_DOWNLOAD_FROM_ENABLE_ENVIRONMENT_PROXY}"
+      - "--api-download-from-max-retry=${API_DOWNLOAD_FROM_MAX_RETRY}"
+      - "--api-disable-download-from=${API_DISABLE_DOWNLOAD_FROM}"
+      - "--api-disable-health-check-route-telemetry=${API_DISABLE_HEALTH_CHECK_ROUTE_TELEMETRY}"
+      - "--api-disable-root-route-telemetry=${API_DISABLE_ROOT_ROUTE_TELEMETRY}"
+      - "--api-disable-debug-route-telemetry=${API_DISABLE_DEBUG_ROUTE_TELEMETRY}"
+      - "--api-disable-version-route-telemetry=${API_DISABLE_VERSION_ROUTE_TELEMETRY}"
+      - "--api-enable-debug-route=${API_ENABLE_DEBUG_ROUTE}"
+      - "--chromium-restart-after=${CHROMIUM_RESTART_AFTER}"
+      - "--chromium-auto-start=${CHROMIUM_AUTO_START}"
+      - "--chromium-max-queue-size=${CHROMIUM_MAX_QUEUE_SIZE}"
+      - "--chromium-idle-shutdown-timeout=${CHROMIUM_IDLE_SHUTDOWN_TIMEOUT}"
+      - "--chromium-max-concurrency=${CHROMIUM_MAX_CONCURRENCY}"
+      - "--chromium-start-timeout=${CHROMIUM_START_TIMEOUT}"
+      - "--chromium-allow-insecure-localhost=${CHROMIUM_ALLOW_INSECURE_LOCALHOST}"
+      - "--chromium-ignore-certificate-errors=${CHROMIUM_IGNORE_CERTIFICATE_ERRORS}"
+      - "--chromium-disable-web-security=${CHROMIUM_DISABLE_WEB_SECURITY}"
+      - "--chromium-allow-file-access-from-files=${CHROMIUM_ALLOW_FILE_ACCESS_FROM_FILES}"
+      - "--chromium-host-resolver-rules=${CHROMIUM_HOST_RESOLVER_RULES}"
+      - "--chromium-proxy-server=${CHROMIUM_PROXY_SERVER}"
+      - "--chromium-enable-environment-proxy=${CHROMIUM_ENABLE_ENVIRONMENT_PROXY}"
+      - "--chromium-allow-list=${CHROMIUM_ALLOW_LIST}"
+      - "--chromium-deny-list=${CHROMIUM_DENY_LIST}"
+      - "--chromium-deny-private-ips=${CHROMIUM_DENY_PRIVATE_IPS}"
+      - "--chromium-deny-public-ips=${CHROMIUM_DENY_PUBLIC_IPS}"
+      - "--chromium-clear-cache=${CHROMIUM_CLEAR_CACHE}"
+      - "--chromium-clear-cookies=${CHROMIUM_CLEAR_COOKIES}"
+      - "--chromium-disable-javascript=${CHROMIUM_DISABLE_JAVASCRIPT}"
+      - "--chromium-disable-routes=${CHROMIUM_DISABLE_ROUTES}"
+      - "--libreoffice-restart-after=${LIBREOFFICE_RESTART_AFTER}"
+      - "--libreoffice-max-queue-size=${LIBREOFFICE_MAX_QUEUE_SIZE}"
+      - "--libreoffice-idle-shutdown-timeout=${LIBREOFFICE_IDLE_SHUTDOWN_TIMEOUT}"
+      - "--libreoffice-auto-start=${LIBREOFFICE_AUTO_START}"
+      - "--libreoffice-start-timeout=${LIBREOFFICE_START_TIMEOUT}"
+      - "--libreoffice-allow-list=${LIBREOFFICE_ALLOW_LIST}"
+      - "--libreoffice-deny-list=${LIBREOFFICE_DENY_LIST}"
+      - "--libreoffice-deny-private-ips=${LIBREOFFICE_DENY_PRIVATE_IPS}"
+      - "--libreoffice-deny-public-ips=${LIBREOFFICE_DENY_PUBLIC_IPS}"
+      - "--libreoffice-enable-environment-proxy=${LIBREOFFICE_ENABLE_ENVIRONMENT_PROXY}"
+      - "--libreoffice-disable-routes=${LIBREOFFICE_DISABLE_ROUTES}"
+      - "--log-level=${LOG_LEVEL}"
+      - "--log-fields-prefix=${LOG_FIELDS_PREFIX}"
+      - "--log-std-format=${LOG_STD_FORMAT}"
+      - "--log-std-enable-gcp-fields=${LOG_STD_ENABLE_GCP_FIELDS}"
+      - "--log-std-level-case=${LOG_STD_LEVEL_CASE}"
+      - "--pdfengines-merge-engines=${PDFENGINES_MERGE_ENGINES}"
+      - "--pdfengines-split-engines=${PDFENGINES_SPLIT_ENGINES}"
+      - "--pdfengines-flatten-engines=${PDFENGINES_FLATTEN_ENGINES}"
+      - "--pdfengines-convert-engines=${PDFENGINES_CONVERT_ENGINES}"
+      - "--pdfengines-read-metadata-engines=${PDFENGINES_READ_METADATA_ENGINES}"
+      - "--pdfengines-write-metadata-engines=${PDFENGINES_WRITE_METADATA_ENGINES}"
+      - "--pdfengines-read-bookmarks-engines=${PDFENGINES_READ_BOOKMARKS_ENGINES}"
+      - "--pdfengines-write-bookmarks-engines=${PDFENGINES_WRITE_BOOKMARKS_ENGINES}"
+      - "--pdfengines-watermark-engines=${PDFENGINES_WATERMARK_ENGINES}"
+      - "--pdfengines-stamp-engines=${PDFENGINES_STAMP_ENGINES}"
+      - "--pdfengines-encrypt-engines=${PDFENGINES_ENCRYPT_ENGINES}"
+      - "--pdfengines-rotate-engines=${PDFENGINES_ROTATE_ENGINES}"
+      - "--pdfengines-embed-engines=${PDFENGINES_EMBED_ENGINES}"
+      - "--pdfengines-embed-metadata-engines=${PDFENGINES_EMBED_METADATA_ENGINES}"
+      - "--pdfengines-factur-x-engines=${PDFENGINES_FACTUR_X_ENGINES}"
+      - "--pdfengines-disable-routes=${PDFENGINES_DISABLE_ROUTES}"
+      - "--prometheus-namespace=${PROMETHEUS_NAMESPACE}"
+      - "--prometheus-collect-interval=${PROMETHEUS_COLLECT_INTERVAL}"
+      - "--prometheus-disable-route-telemetry=${PROMETHEUS_DISABLE_ROUTE_TELEMETRY}"
+      - "--prometheus-disable-collect=${PROMETHEUS_DISABLE_COLLECT}"
+      - "--prometheus-metrics-path=${PROMETHEUS_METRICS_PATH}"
+      - "--webhook-enable-sync-mode=${WEBHOOK_ENABLE_SYNC_MODE}"
+      - "--webhook-allow-list=${WEBHOOK_ALLOW_LIST}"
+      - "--webhook-deny-list=${WEBHOOK_DENY_LIST}"
+      - "--webhook-deny-private-ips=${WEBHOOK_DENY_PRIVATE_IPS}"
+      - "--webhook-deny-public-ips=${WEBHOOK_DENY_PUBLIC_IPS}"
+      - "--webhook-enable-environment-proxy=${WEBHOOK_ENABLE_ENVIRONMENT_PROXY}"
+      - "--webhook-max-retry=${WEBHOOK_MAX_RETRY}"
+      - "--webhook-retry-min-wait=${WEBHOOK_RETRY_MIN_WAIT}"
+      - "--webhook-retry-max-wait=${WEBHOOK_RETRY_MAX_WAIT}"
+      - "--webhook-client-timeout=${WEBHOOK_CLIENT_TIMEOUT}"
+      - "--webhook-disable=${WEBHOOK_DISABLE}"
+
+  otel-collector:
+    image: otel/opentelemetry-collector-contrib:latest
+    command: ["--config=/etc/otel-collector-config.yaml"]
+    volumes:
+      - ./otel-collector-config.yaml:/etc/otel-collector-config.yaml
+    ports:
+      - "4317:4317" # OTLP gRPC receiver
+    depends_on:
+      openobserve:
+        condition: service_started
+    restart: on-failure
+
+  openobserve:
+    image: public.ecr.aws/zinclabs/openobserve:latest
+    restart: always
+    ports:
+      - "5080:5080"
+      - "5081:5081"
+    environment:
+      ZO_ROOT_USER_EMAIL: telemetry@gotenberg.dev
+      ZO_ROOT_USER_PASSWORD: telemetry
+
+networks:
+  default:
+    enable_ipv6: false

go.mod

@@ -1,33 +1,40 @@
 module github.com/gotenberg/gotenberg/v8
 
-go 1.26.0
+go 1.26.5
 
 require (
 	github.com/alexliesenfeld/health v0.8.1
-	github.com/barasher/go-exiftool v1.10.0
-	github.com/chromedp/cdproto v0.0.0-20250803210736-d308e07a266d
-	github.com/chromedp/chromedp v0.14.2
-	github.com/cucumber/godog v0.15.1
-	github.com/dlclark/regexp2 v1.11.5
-	github.com/docker/docker v28.5.2+incompatible
-	github.com/docker/go-connections v0.6.0
-	github.com/gomarkdown/markdown v0.0.0-20260217112301-37c66b85d6ab
+	github.com/chromedp/cdproto v0.0.0-20250803210736-d308e07a266d // pinned with chromedp v0.14.2, see below
+	github.com/chromedp/chromedp v0.14.2 // pinned: v0.15.x breaks the headless print-mode paint pipeline (rAF / ResizeObserver / IntersectionObserver stop firing, blank charts). See https://github.com/gotenberg/gotenberg/issues/1535.
+	github.com/cucumber/godog v0.16.0
+	github.com/dlclark/regexp2 v1.12.0
+	github.com/gomarkdown/markdown v0.0.0-20260614204949-e08cff860f76
 	github.com/google/uuid v1.6.0
 	github.com/hashicorp/go-retryablehttp v0.7.8
-	github.com/labstack/echo/v4 v4.15.1
-	github.com/labstack/gommon v0.4.2
+	github.com/labstack/echo/v4 v4.15.4
+	github.com/labstack/gommon v0.5.0
 	github.com/mholt/archives v0.1.5
 	github.com/microcosm-cc/bluemonday v1.0.27
-	github.com/prometheus/client_golang v1.23.2
-	github.com/shirou/gopsutil/v4 v4.26.1
+	github.com/moby/moby/api v1.55.0
+	github.com/moby/moby/client v0.5.1
+	github.com/prometheus/client_golang v1.24.1
+	github.com/shirou/gopsutil/v4 v4.26.7
 	github.com/spf13/pflag v1.0.10
-	github.com/testcontainers/testcontainers-go v0.40.0
-	go.uber.org/multierr v1.11.0
-	go.uber.org/zap v1.27.1
-	golang.org/x/net v0.50.0
-	golang.org/x/sync v0.19.0
-	golang.org/x/term v0.40.0
-	golang.org/x/text v0.34.0
+	github.com/stretchr/testify v1.11.1
+	github.com/testcontainers/testcontainers-go v0.43.0
+	go.opentelemetry.io/contrib/bridges/otelslog v0.19.0
+	go.opentelemetry.io/contrib/exporters/autoexport v0.69.0
+	go.opentelemetry.io/otel v1.45.0
+	go.opentelemetry.io/otel/log v0.20.0
+	go.opentelemetry.io/otel/metric v1.45.0
+	go.opentelemetry.io/otel/sdk v1.45.0
+	go.opentelemetry.io/otel/sdk/log v0.20.0
+	go.opentelemetry.io/otel/sdk/metric v1.45.0
+	go.opentelemetry.io/otel/trace v1.45.0
+	golang.org/x/net v0.57.0
+	golang.org/x/sync v0.22.0
+	golang.org/x/term v0.45.0
+	golang.org/x/text v0.40.0
 )
 
 require (
@@ -35,13 +42,14 @@ require (
 	github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/STARRY-S/zip v0.2.3 // indirect
-	github.com/andybalholm/brotli v1.2.0 // indirect
+	github.com/andybalholm/brotli v1.2.1 // indirect
 	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bodgit/plumbing v1.3.0 // indirect
-	github.com/bodgit/sevenzip v1.6.1 // indirect
+	github.com/bodgit/sevenzip v1.6.4 // indirect
 	github.com/bodgit/windows v1.0.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
+	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/chromedp/sysutil v1.1.0 // indirect
 	github.com/containerd/errdefs v1.0.0 // indirect
@@ -49,77 +57,87 @@ require (
 	github.com/containerd/log v0.1.0 // indirect
 	github.com/containerd/platforms v0.2.1 // indirect
 	github.com/cpuguy83/dockercfg v0.3.2 // indirect
-	github.com/cucumber/gherkin/go/v26 v26.2.0 // indirect
-	github.com/cucumber/messages/go/v21 v21.0.1 // indirect
+	github.com/cucumber/gherkin/go/v42 v42.0.0 // indirect
+	github.com/cucumber/messages/go/v34 v34.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/distribution/reference v0.6.0 // indirect
+	github.com/docker/go-connections v0.7.0 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707 // indirect
-	github.com/ebitengine/purego v0.9.1 // indirect
-	github.com/felixge/httpsnoop v1.0.4 // indirect
-	github.com/go-json-experiment/json v0.0.0-20260214004413-d219187c3433 // indirect
-	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/ebitengine/purego v0.10.2 // indirect
+	github.com/felixge/httpsnoop v1.1.0 // indirect
+	github.com/go-json-experiment/json v0.0.0-20260601182631-00ed12fed2a6 // indirect
+	github.com/go-logr/logr v1.4.4 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/gobwas/httphead v0.1.0 // indirect
 	github.com/gobwas/pool v0.2.1 // indirect
 	github.com/gobwas/ws v1.4.0 // indirect
-	github.com/gofrs/uuid v4.4.0+incompatible // indirect
 	github.com/gorilla/css v1.0.1 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
 	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
 	github.com/hashicorp/go-memdb v1.3.5 // indirect
 	github.com/hashicorp/golang-lru v1.0.2 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
-	github.com/klauspost/compress v1.18.4 // indirect
+	github.com/klauspost/compress v1.19.1 // indirect
 	github.com/klauspost/pgzip v1.2.6 // indirect
-	github.com/lufia/plan9stats v0.0.0-20260216142805-b3301c5f2a88 // indirect
+	github.com/lufia/plan9stats v0.0.0-20260330125221-c963978e514e // indirect
 	github.com/magiconair/properties v1.8.10 // indirect
-	github.com/mattn/go-colorable v0.1.14 // indirect
-	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-colorable v0.1.15 // indirect
+	github.com/mattn/go-isatty v0.0.22 // indirect
 	github.com/mikelolasagasti/xz v1.0.1 // indirect
-	github.com/minio/minlz v1.0.1 // indirect
+	github.com/minio/minlz v1.1.1 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/moby/go-archive v0.2.0 // indirect
-	github.com/moby/patternmatcher v0.6.0 // indirect
-	github.com/moby/sys/sequential v0.6.0 // indirect
+	github.com/moby/patternmatcher v0.6.1 // indirect
+	github.com/moby/sys/sequential v0.7.0 // indirect
 	github.com/moby/sys/user v0.4.0 // indirect
 	github.com/moby/sys/userns v0.1.0 // indirect
 	github.com/moby/term v0.5.2 // indirect
-	github.com/morikuni/aec v1.1.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/nwaples/rardecode/v2 v2.2.2 // indirect
+	github.com/nwaples/rardecode/v2 v2.2.5 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.1 // indirect
-	github.com/pierrec/lz4/v4 v4.1.25 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pierrec/lz4/v4 v4.1.27 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.67.5 // indirect
-	github.com/prometheus/procfs v0.19.2 // indirect
+	github.com/prometheus/common v0.70.1 // indirect
+	github.com/prometheus/otlptranslator v1.0.0 // indirect
+	github.com/prometheus/procfs v0.21.1 // indirect
 	github.com/sirupsen/logrus v1.9.4 // indirect
 	github.com/sorairolake/lzip-go v0.3.8 // indirect
 	github.com/spf13/afero v1.15.0 // indirect
-	github.com/stretchr/testify v1.11.1 // indirect
-	github.com/tklauser/go-sysconf v0.3.16 // indirect
-	github.com/tklauser/numcpus v0.11.0 // indirect
+	github.com/stangelandcl/ppmd v0.1.1 // indirect
+	github.com/tklauser/go-sysconf v0.4.0 // indirect
+	github.com/tklauser/numcpus v0.12.0 // indirect
 	github.com/ulikunitz/xz v0.5.15 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.65.0 // indirect
-	go.opentelemetry.io/otel v1.40.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.37.0 // indirect
-	go.opentelemetry.io/otel/metric v1.40.0 // indirect
-	go.opentelemetry.io/otel/trace v1.40.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.7.1 // indirect
-	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	go.opentelemetry.io/contrib/bridges/prometheus v0.69.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.69.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.20.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp v0.20.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.44.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.44.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.44.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.44.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.44.0 // indirect
+	go.opentelemetry.io/otel/exporters/prometheus v0.66.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdoutlog v0.20.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.44.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.44.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.10.0 // indirect
 	go4.org v0.0.0-20260112195520-a5071408f32f // indirect
-	golang.org/x/crypto v0.48.0 // indirect
-	golang.org/x/sys v0.41.0 // indirect
-	golang.org/x/time v0.14.0 // indirect
+	golang.org/x/crypto v0.54.0 // indirect
+	golang.org/x/sys v0.47.0 // indirect
+	golang.org/x/time v0.15.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260615183401-62b3387ff324 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260615183401-62b3387ff324 // indirect
+	google.golang.org/grpc v1.82.1 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -10,22 +10,22 @@ github.com/STARRY-S/zip v0.2.3 h1:luE4dMvRPDOWQdeDdUxUoZkzUIpTccdKdhHHsQJ1fm4=
 github.com/STARRY-S/zip v0.2.3/go.mod h1:lqJ9JdeRipyOQJrYSOtpNAiaesFO6zVDsE8GIGFaoSk=
 github.com/alexliesenfeld/health v0.8.1 h1:wdE3vt+cbJotiR8DGDBZPKHDFoJbAoWEfQTcqrmedUg=
 github.com/alexliesenfeld/health v0.8.1/go.mod h1:TfNP0f+9WQVWMQRzvMUjlws4ceXKEL3WR+6Hp95HUFc=
-github.com/andybalholm/brotli v1.2.0 h1:ukwgCxwYrmACq68yiUqwIWnGY0cTPox/M94sVwToPjQ=
-github.com/andybalholm/brotli v1.2.0/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
+github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
+github.com/andybalholm/brotli v1.2.1/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
 github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk=
 github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
-github.com/barasher/go-exiftool v1.10.0 h1:f5JY5jc42M7tzR6tbL9508S2IXdIcG9QyieEXNMpIhs=
-github.com/barasher/go-exiftool v1.10.0/go.mod h1:F9s/a3uHSM8YniVfwF+sbQUtP8Gmh9nyzigNF+8vsWo=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bodgit/plumbing v1.3.0 h1:pf9Itz1JOQgn7vEOE7v7nlEfBykYqvUYioC61TwWCFU=
 github.com/bodgit/plumbing v1.3.0/go.mod h1:JOTb4XiRu5xfnmdnDJo6GmSbSbtSyufrsyZFByMtKEs=
-github.com/bodgit/sevenzip v1.6.1 h1:kikg2pUMYC9ljU7W9SaqHXhym5HyKm8/M/jd31fYan4=
-github.com/bodgit/sevenzip v1.6.1/go.mod h1:GVoYQbEVbOGT8n2pfqCIMRUaRjQ8F9oSqoBEqZh5fQ8=
+github.com/bodgit/sevenzip v1.6.4 h1:iHiVJfxbrB6RF4X+snI2MpVgNBKmVfGaTqZGNlMQIU0=
+github.com/bodgit/sevenzip v1.6.4/go.mod h1:ZtNi5KNgHXeXg1G7WiF0IWSuFE2eG6lt/cTGlvuirO0=
 github.com/bodgit/windows v1.0.1 h1:tF7K6KOluPYygXa3Z2594zxlkbKPAOvqr97etrGNIz4=
 github.com/bodgit/windows v1.0.1/go.mod h1:a6JLwrB4KrTR5hBpp8FI9/9W9jJfeQ2h4XDXU74ZCdM=
 github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=
 github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
+github.com/cenkalti/backoff/v5 v5.0.3 h1:ZN+IMa753KfX5hd8vVaMixjnqRZ3y8CuJKRKj1xcsSM=
+github.com/cenkalti/backoff/v5 v5.0.3/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
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@@ -257,61 +241,90 @@ github.com/yusufpapurcu/wmi v1.2.4 h1:zFUKzehAFReQwLys1b/iSMl+JQGSCSjtVqQn9bBrPo
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+google.golang.org/genproto/googleapis/api v0.0.0-20260615183401-62b3387ff324 h1:g0RAkxK/smSu/iRwC/KIX1mwUoVJtk2OjbgaeS4DmUM=
+google.golang.org/genproto/googleapis/api v0.0.0-20260615183401-62b3387ff324/go.mod h1:Z4WJ5pJOYWFWcHEQUelD5QaZDknIQkpIL/+fyJOT9+A=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260615183401-62b3387ff324 h1:9HZDLIdYBJXAnaFOr9WHrKVycfpY+75s9HGadC0305A=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260615183401-62b3387ff324/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
+google.golang.org/grpc v1.82.1 h1:NnAxzGRA0677vCa4BUkOAnO5+FfQqVl9iUXeD0IqcGE=
+google.golang.org/grpc v1.82.1/go.mod h1:yzTZ1TB1Z3SG+LIYaI+WiE8D5+PZ3ArnrSp8zF3+/ZA=
 google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
 google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -322,3 +335,5 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools/v3 v3.5.2 h1:7koQfIKdy+I8UTetycgUqXWSDwpgv193Ka+qRsmBY8Q=
 gotest.tools/v3 v3.5.2/go.mod h1:LtdLGcnqToBH83WByAAi/wiwSFCArdFIUV/xxN4pcjA=
+pgregory.net/rapid v1.2.0 h1:keKAYRcjm+e1F0oAuU5F5+YPAWcyxNNRK2wud503Gnk=
+pgregory.net/rapid v1.2.0/go.mod h1:PY5XlDGj0+V1FCq0o192FdRhpKHGTRIWBgqjDBTrq04=

otel-collector-config.yaml

@@ -0,0 +1,32 @@
+receivers:
+  otlp:
+    protocols:
+      grpc:
+        endpoint: "0.0.0.0:4317"
+
+processors:
+  batch:
+
+exporters:
+  otlp/openobserve:
+    endpoint: "openobserve:5081"
+    tls:
+      insecure: true
+    headers:
+      Authorization: "Basic dGVsZW1ldHJ5QGdvdGVuYmVyZy5kZXY6dGVsZW1ldHJ5"
+      organization: "default"
+
+service:
+  pipelines:
+    traces:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [otlp/openobserve]
+    metrics:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [otlp/openobserve]
+    logs:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [otlp/openobserve]

package-lock.json

@@ -5,9 +5,9 @@
   "packages": {
     "": {
       "devDependencies": {
-        "prettier": "3.8.1",
+        "prettier": "3.9.6",
         "prettier-plugin-gherkin": "^3.1.3",
-        "prettier-plugin-sh": "^0.18.0"
+        "prettier-plugin-sh": "^0.19.0"
       }
     },
     "node_modules/@cucumber/gherkin": {
@@ -34,15 +34,80 @@
       }
     },
     "node_modules/@reteps/dockerfmt": {
-      "version": "0.3.6",
-      "resolved": "https://registry.npmjs.org/@reteps/dockerfmt/-/dockerfmt-0.3.6.tgz",
-      "integrity": "sha512-Tb5wIMvBf/nLejTQ61krK644/CEMB/cpiaIFXqGApfGqO3GwcR3qnI0DbmkFVCl2OyEp8LnLX3EkucoL0+tbFg==",
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/@reteps/dockerfmt/-/dockerfmt-0.5.4.tgz",
+      "integrity": "sha512-HEGgXVVOb+JtGUSSzXl/XPKFIZjMDTUoHarCjaQdkY+cb5M9K/O3b5xm+x0IPIk3SfHurbc0bSgcFsQlzjitxA==",
       "dev": true,
       "license": "MIT",
+      "bin": {
+        "dockerfmt": "dist/launcher.js"
+      },
       "engines": {
         "node": "^v12.20.0 || ^14.13.0 || >=16.0.0"
+      },
+      "optionalDependencies": {
+        "@reteps/dockerfmt-darwin-arm64": "0.5.4",
+        "@reteps/dockerfmt-darwin-x64": "0.5.4",
+        "@reteps/dockerfmt-linux-arm64": "0.5.4",
+        "@reteps/dockerfmt-linux-x64": "0.5.4"
       }
     },
+    "node_modules/@reteps/dockerfmt-darwin-arm64": {
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/@reteps/dockerfmt-darwin-arm64/-/dockerfmt-darwin-arm64-0.5.4.tgz",
+      "integrity": "sha512-urMqV+dQyvVI8/WrXwClX9e1PEyS35wFdwJjpZYmL09AkV4Io5U1oam8UBKK7jZk0+YsdF88ay6e86Kn6DIyQg==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ]
+    },
+    "node_modules/@reteps/dockerfmt-darwin-x64": {
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/@reteps/dockerfmt-darwin-x64/-/dockerfmt-darwin-x64-0.5.4.tgz",
+      "integrity": "sha512-fJORy6DFxbgDiMqxpLTPZlb5KUY0Vq0iR4NGnyKnuYZ9LdZUS508DK2kt/AJ87/jIKNV1qRG0JXG1Tc6xdvWjw==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ]
+    },
+    "node_modules/@reteps/dockerfmt-linux-arm64": {
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/@reteps/dockerfmt-linux-arm64/-/dockerfmt-linux-arm64-0.5.4.tgz",
+      "integrity": "sha512-6pVakO06eXtDuvxy1Dnjs/gQyUoGGycle8PRSt5IFRwLi/AVaOQwfkfmW0WP8VH9wNUeti6BfJ3ksTn2G+XMxg==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/@reteps/dockerfmt-linux-x64": {
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/@reteps/dockerfmt-linux-x64/-/dockerfmt-linux-x64-0.5.4.tgz",
+      "integrity": "sha512-OD6SIlUV1D4TgJoTui3FMBAZsGbTSPYsiT0BKhD6jMUcJb3GpFTa7dY9rL8rP9FUqfL7OTHVUGUOL4Rh64Olog==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
     "node_modules/@types/uuid": {
       "version": "10.0.0",
       "resolved": "https://registry.npmjs.org/@types/uuid/-/uuid-10.0.0.tgz",
@@ -58,9 +123,9 @@
       "license": "MIT"
     },
     "node_modules/prettier": {
-      "version": "3.8.1",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.8.1.tgz",
-      "integrity": "sha512-UOnG6LftzbdaHZcKoPFtOcCKztrQ57WkHDeRD9t/PTQtmT0NHSeWWepj6pS0z/N7+08BHFDQVUrfmfMRcZwbMg==",
+      "version": "3.9.6",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.9.6.tgz",
+      "integrity": "sha512-OpN0zzVdiaiAhxpuuj5efpIS4sY9j7bY6uR5mnj5yPzGkdkjNKSJeUThPb60Jw29QuAZgA4o+/iB49kFiaBX6g==",
       "dev": true,
       "license": "MIT",
       "bin": {
@@ -86,14 +151,14 @@
       }
     },
     "node_modules/prettier-plugin-sh": {
-      "version": "0.18.0",
-      "resolved": "https://registry.npmjs.org/prettier-plugin-sh/-/prettier-plugin-sh-0.18.0.tgz",
-      "integrity": "sha512-cW1XL27FOJQ/qGHOW6IHwdCiNWQsAgK+feA8V6+xUTaH0cD3Mh+tFAtBvEEWvuY6hTDzRV943Fzeii+qMOh7nQ==",
+      "version": "0.19.0",
+      "resolved": "https://registry.npmjs.org/prettier-plugin-sh/-/prettier-plugin-sh-0.19.0.tgz",
+      "integrity": "sha512-39VXFZH/cOGtcuu8aeSvqp/hhwomOR4QroZUj+jBz2cNb3os9s0sqFZSNlYts6jdtLLDU7D2YT3Z1+abtb7adQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@reteps/dockerfmt": "^0.3.6",
-        "sh-syntax": "^0.5.8"
+        "@reteps/dockerfmt": "^0.5.4",
+        "sh-syntax": "^0.6.0"
       },
       "engines": {
         "node": ">=16.0.0"
@@ -113,14 +178,11 @@
       "license": "Apache-2.0"
     },
     "node_modules/sh-syntax": {
-      "version": "0.5.8",
-      "resolved": "https://registry.npmjs.org/sh-syntax/-/sh-syntax-0.5.8.tgz",
-      "integrity": "sha512-JfVoxf4FxQI5qpsPbkHhZo+n6N9YMJobyl4oGEUBb/31oQYlgTjkXQD8PBiafS2UbWoxrTO0Z5PJUBXEPAG1Zw==",
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/sh-syntax/-/sh-syntax-0.6.0.tgz",
+      "integrity": "sha512-52VK6z/cdZHv7UURjIcwfBUQZrAhIEEe0bY4lrkfypjnFIKsDZdD3Uaz/dBiw/sF8BeX0Mssv140s8EnrsJ9dQ==",
       "dev": true,
       "license": "MIT",
-      "dependencies": {
-        "tslib": "^2.8.1"
-      },
       "engines": {
         "node": ">=16.0.0"
       },
@@ -128,13 +190,6 @@
         "url": "https://opencollective.com/sh-syntax"
       }
     },
-    "node_modules/tslib": {
-      "version": "2.8.1",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
-      "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
-      "dev": true,
-      "license": "0BSD"
-    },
     "node_modules/uuid": {
       "version": "11.0.5",
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-11.0.5.tgz",

package.json

@@ -1,7 +1,7 @@
 {
   "devDependencies": {
-    "prettier": "3.8.1",
+    "prettier": "3.9.6",
     "prettier-plugin-gherkin": "^3.1.3",
-    "prettier-plugin-sh": "^0.18.0"
+    "prettier-plugin-sh": "^0.19.0"
   }
 }

pkg/gotenberg/attrs.go

@@ -0,0 +1,53 @@
+package gotenberg
+
+import (
+	"net/url"
+	"slices"
+)
+
+// maxAttrRunes bounds the length of a string span attribute to keep payload
+// size and backend cardinality in check.
+const maxAttrRunes = 256
+
+// CapAttr truncates s to at most [maxAttrRunes] runes, appending an ellipsis
+// when it shortens the value. It is multibyte-safe.
+func CapAttr(s string) string {
+	runes := []rune(s)
+	if len(runes) <= maxAttrRunes {
+		return s
+	}
+	return string(runes[:maxAttrRunes-1]) + "…"
+}
+
+// RedactURL parses raw and returns a redacted, length-capped form safe to use
+// as a span attribute or event value. Userinfo, query, and fragment are
+// dropped because they may carry credentials or other sensitive data. It
+// returns an empty string when raw is empty or cannot be parsed.
+func RedactURL(raw string) string {
+	if raw == "" {
+		return ""
+	}
+
+	parsed, err := url.Parse(raw)
+	if err != nil {
+		return ""
+	}
+
+	parsed.User = nil
+	parsed.RawQuery = ""
+	parsed.ForceQuery = false
+	parsed.Fragment = ""
+	parsed.RawFragment = ""
+
+	return CapAttr(parsed.String())
+}
+
+// MapEnum returns value when it belongs to allowed, otherwise "other". It keeps
+// a span attribute or metric dimension bounded even when an upstream tool
+// introduces a new enum value.
+func MapEnum(value string, allowed ...string) string {
+	if slices.Contains(allowed, value) {
+		return value
+	}
+	return "other"
+}

pkg/gotenberg/attrs_test.go

@@ -0,0 +1,62 @@
+package gotenberg
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestRedactURL(t *testing.T) {
+	for _, tc := range []struct {
+		name string
+		raw  string
+		want string
+	}{
+		{"empty", "", ""},
+		{"strips userinfo query fragment", "https://user:pass@example.com/path?token=secret#frag", "https://example.com/path"},
+		{"keeps host and path", "http://example.com/a/b", "http://example.com/a/b"},
+		{"parse error", "http://example.com/%zz", ""},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			if got := RedactURL(tc.raw); got != tc.want {
+				t.Errorf("RedactURL(%q) = %q, want %q", tc.raw, got, tc.want)
+			}
+		})
+	}
+}
+
+func TestRedactURL_Caps(t *testing.T) {
+	raw := "https://example.com/" + strings.Repeat("a", 400)
+	got := RedactURL(raw)
+	if n := len([]rune(got)); n != maxAttrRunes {
+		t.Errorf("expected capped length %d, got %d", maxAttrRunes, n)
+	}
+}
+
+func TestCapAttr(t *testing.T) {
+	t.Run("short unchanged", func(t *testing.T) {
+		if got := CapAttr("short"); got != "short" {
+			t.Errorf("expected unchanged, got %q", got)
+		}
+	})
+
+	t.Run("multibyte truncated to rune cap", func(t *testing.T) {
+		got := CapAttr(strings.Repeat("é", 400))
+		if n := len([]rune(got)); n != maxAttrRunes {
+			t.Errorf("expected %d runes, got %d", maxAttrRunes, n)
+		}
+		if !strings.HasSuffix(got, "…") {
+			t.Error("expected an ellipsis suffix on a truncated value")
+		}
+	})
+}
+
+func TestMapEnum(t *testing.T) {
+	allowed := []string{"document", "stylesheet", "script"}
+
+	if got := MapEnum("script", allowed...); got != "script" {
+		t.Errorf("expected member passthrough, got %q", got)
+	}
+	if got := MapEnum("websocket", allowed...); got != "other" {
+		t.Errorf("expected non-member to map to other, got %q", got)
+	}
+}

pkg/gotenberg/buildversions.go

@@ -0,0 +1,50 @@
+package gotenberg
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// BuildVersionsDirPathEnvVar names the environment variable holding the
+// absolute path to a directory of build-time version files. The Gotenberg image
+// writes one file per module there, named by module ID and holding the version
+// string of that module's backing binary, captured right after the binary is
+// installed. The running process reads these files instead of executing the
+// binaries, which keeps startup and the first request cheap.
+const BuildVersionsDirPathEnvVar = "GOTENBERG_VERSIONS_DIR_PATH"
+
+// BuildVersion returns the build-time version captured for the module with the
+// given ID. The boolean is false when no version was captured, which is the
+// case for local or non-Docker builds where the directory is absent. A module
+// uses it to avoid spawning its backing binary just to report a version.
+//
+// It is defensive: an unset variable, a missing or unreadable file, or an empty
+// value all yield ("", false), so the caller falls back to detecting the
+// version at runtime. See [BuildVersionsDirPathEnvVar].
+func BuildVersion(moduleID string) (string, bool) {
+	dir := os.Getenv(BuildVersionsDirPathEnvVar)
+	if dir == "" {
+		return "", false
+	}
+
+	// Module IDs are fixed internal constants, never paths. Guard anyway so a
+	// stray separator can't escape the versions directory.
+	if moduleID != filepath.Base(moduleID) {
+		return "", false
+	}
+
+	// The directory comes from a trusted operator-set environment variable,
+	// mirroring how engines exec their env-configured binaries.
+	b, err := os.ReadFile(filepath.Join(dir, moduleID)) //nolint:gosec
+	if err != nil {
+		return "", false
+	}
+
+	version := strings.TrimSpace(string(b))
+	if version == "" {
+		return "", false
+	}
+
+	return version, true
+}

pkg/gotenberg/buildversions_test.go

@@ -0,0 +1,81 @@
+package gotenberg
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestBuildVersion(t *testing.T) {
+	for _, tc := range []struct {
+		scenario  string
+		fileBody  string
+		writeFile bool
+		setEnv    bool
+		moduleID  string
+		wantValue string
+		wantOk    bool
+	}{
+		{
+			scenario:  "version present",
+			fileBody:  "Chromium 146.0",
+			writeFile: true,
+			setEnv:    true,
+			moduleID:  "chromium",
+			wantValue: "Chromium 146.0",
+			wantOk:    true,
+		},
+		{
+			scenario:  "value trimmed",
+			fileBody:  "  qpdf version 11.9.0  \n",
+			writeFile: true,
+			setEnv:    true,
+			moduleID:  "qpdf",
+			wantValue: "qpdf version 11.9.0",
+			wantOk:    true,
+		},
+		{
+			scenario:  "empty file falls back",
+			fileBody:  "   \n",
+			writeFile: true,
+			setEnv:    true,
+			moduleID:  "pdftk",
+			wantValue: "",
+			wantOk:    false,
+		},
+		{
+			scenario:  "missing file falls back",
+			writeFile: false,
+			setEnv:    true,
+			moduleID:  "exiftool",
+			wantValue: "",
+			wantOk:    false,
+		},
+		{
+			scenario:  "env unset falls back",
+			setEnv:    false,
+			moduleID:  "chromium",
+			wantValue: "",
+			wantOk:    false,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			if tc.setEnv {
+				dir := t.TempDir()
+				if tc.writeFile {
+					if err := os.WriteFile(filepath.Join(dir, tc.moduleID), []byte(tc.fileBody), 0o600); err != nil {
+						t.Fatalf("write version file: %v", err)
+					}
+				}
+				t.Setenv(BuildVersionsDirPathEnvVar, dir)
+			} else {
+				t.Setenv(BuildVersionsDirPathEnvVar, "")
+			}
+
+			value, ok := BuildVersion(tc.moduleID)
+			if value != tc.wantValue || ok != tc.wantOk {
+				t.Errorf("BuildVersion(%q) = (%q, %t), want (%q, %t)", tc.moduleID, value, ok, tc.wantValue, tc.wantOk)
+			}
+		})
+	}
+}

pkg/gotenberg/cmd.go

@@ -6,17 +6,22 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"log/slog"
 	"os/exec"
+	"path/filepath"
 	"strings"
 	"syscall"
 
-	"go.uber.org/zap"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.41.0"
+	"go.opentelemetry.io/otel/trace"
 )
 
 // Cmd wraps an [exec.Cmd].
 type Cmd struct {
 	ctx     context.Context
-	logger  *zap.Logger
+	logger  *slog.Logger
 	process *exec.Cmd
 }
 
@@ -25,13 +30,13 @@ type Cmd struct {
 // children without creating orphans.
 //
 // See https://medium.com/@felixge/killing-a-child-process-and-all-of-its-children-in-go-54079af94773.
-func Command(logger *zap.Logger, binPath string, args ...string) *Cmd {
+func Command(logger *slog.Logger, binPath string, args ...string) *Cmd {
 	cmd := exec.Command(binPath, args...)
 	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
 
 	return &Cmd{
 		ctx:     nil,
-		logger:  logger.Named(strings.ReplaceAll(binPath, "/", "")),
+		logger:  logger.With(slog.String("logger", strings.ReplaceAll(binPath, "/", ""))),
 		process: cmd,
 	}
 }
@@ -41,7 +46,7 @@ func Command(logger *zap.Logger, binPath string, args ...string) *Cmd {
 // children without creating orphans.
 //
 // See https://medium.com/@felixge/killing-a-child-process-and-all-of-its-children-in-go-54079af94773.
-func CommandContext(ctx context.Context, logger *zap.Logger, binPath string, args ...string) (*Cmd, error) {
+func CommandContext(ctx context.Context, logger *slog.Logger, binPath string, args ...string) (*Cmd, error) {
 	if ctx == nil {
 		return nil, errors.New("nil context")
 	}
@@ -51,11 +56,18 @@ func CommandContext(ctx context.Context, logger *zap.Logger, binPath string, arg
 
 	return &Cmd{
 		ctx:     ctx,
-		logger:  logger.Named(strings.ReplaceAll(binPath, "/", "")),
+		logger:  logger.With(slog.String("logger", strings.ReplaceAll(binPath, "/", ""))),
 		process: cmd,
 	}, nil
 }
 
+// SetEnv replaces the environment variables passed to the underlying
+// process. When SetEnv is not called, the process inherits the parent's
+// environment.
+func (cmd *Cmd) SetEnv(env []string) {
+	cmd.process.Env = env
+}
+
 // Start starts the command but does not wait for its completion.
 func (cmd *Cmd) Start() error {
 	err := cmd.pipeOutput()
@@ -63,7 +75,7 @@ func (cmd *Cmd) Start() error {
 		return fmt.Errorf("pipe unix process output: %w", err)
 	}
 
-	cmd.logger.Debug(fmt.Sprintf("start unix process: %s", strings.Join(cmd.process.Args, " ")))
+	cmd.logger.DebugContext(context.Background(), fmt.Sprintf("start unix process: %s", strings.Join(cmd.process.Args, " ")))
 
 	err = cmd.process.Start()
 	if err != nil {
@@ -86,11 +98,44 @@ func (cmd *Cmd) Wait() error {
 
 // Exec executes the command and waits for its completion or until the context
 // is done. In any case, it kills the unix process and all its children.
+//
+// When the context carries an active trace span, Exec records a
+// "process.exec" client span around the execution. It is the single
+// instrumentation point for every short-lived external binary (soffice, pdftk,
+// qpdf, exiftool, pdfcpu). The span is skipped when there is no active parent,
+// so process starts performed off the request path do not emit orphan roots.
 func (cmd *Cmd) Exec() (int, error) {
 	if cmd.ctx == nil {
 		return 10, errors.New("nil context")
 	}
 
+	var span trace.Span
+	if trace.SpanContextFromContext(cmd.ctx).IsValid() {
+		_, span = Tracer().Start(cmd.ctx, "process.exec",
+			trace.WithSpanKind(trace.SpanKindClient),
+			trace.WithAttributes(semconv.ProcessExecutableName(filepath.Base(cmd.process.Path))),
+		)
+		defer span.End()
+	}
+
+	code, err := cmd.exec()
+
+	if span != nil {
+		span.SetAttributes(attribute.Int("process.exit.code", code))
+		if err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, err.Error())
+			span.SetAttributes(semconv.ErrorTypeKey.String(execErrorType(cmd.ctx)))
+		} else {
+			span.SetStatus(codes.Ok, "")
+		}
+	}
+
+	return code, err
+}
+
+// exec runs the command and returns its exit code and error.
+func (cmd *Cmd) exec() (int, error) {
 	err := cmd.Start()
 	if err != nil {
 		if cmd.process.ProcessState == nil {
@@ -110,7 +155,7 @@ func (cmd *Cmd) Exec() (int, error) {
 	case err = <-errChan:
 		errProc := cmd.Kill()
 		if errProc != nil {
-			cmd.logger.Error(errProc.Error())
+			cmd.logger.ErrorContext(context.Background(), errProc.Error())
 		}
 
 		if err == nil {
@@ -125,18 +170,30 @@ func (cmd *Cmd) Exec() (int, error) {
 	case <-cmd.ctx.Done():
 		errProc := cmd.Kill()
 		if errProc != nil {
-			cmd.logger.Error(errProc.Error())
+			cmd.logger.ErrorContext(context.Background(), errProc.Error())
 		}
 
 		return 62, fmt.Errorf("context done: %w", cmd.ctx.Err())
 	}
 }
 
+// execErrorType maps an execution failure to a bounded semconv error.type
+// value.
+func execErrorType(ctx context.Context) string {
+	switch {
+	case errors.Is(ctx.Err(), context.DeadlineExceeded):
+		return "context_deadline_exceeded"
+	case errors.Is(ctx.Err(), context.Canceled):
+		return "context_canceled"
+	default:
+		return "process_error"
+	}
+}
+
 // pipeOutput creates logs entries according to the process stdout and stderr.
 // It does nothing if the logging level is not debug.
 func (cmd *Cmd) pipeOutput() error {
-	checkedEntry := cmd.logger.Check(zap.DebugLevel, "check for debug level before piping unix process output")
-	if checkedEntry == nil {
+	if !cmd.logger.Enabled(context.Background(), slog.LevelDebug) {
 		return nil
 	}
 
@@ -152,12 +209,12 @@ func (cmd *Cmd) pipeOutput() error {
 
 	// logCommandOutput creates logs entries according to a reader
 	// (either stdout or stderr).
-	logCommandOutput := func(logger *zap.Logger, reader io.ReadCloser) {
+	logCommandOutput := func(logger *slog.Logger, reader io.ReadCloser) {
 		r := bufio.NewReader(reader)
 		defer func(reader io.ReadCloser) {
 			err := reader.Close()
 			if err != nil && !strings.Contains(err.Error(), "file already closed") {
-				logger.Error(fmt.Sprintf("close reader: %s", err))
+				logger.ErrorContext(context.Background(), fmt.Sprintf("close reader: %s", err))
 			}
 		}(reader)
 
@@ -165,20 +222,20 @@ func (cmd *Cmd) pipeOutput() error {
 			line, _, err := r.ReadLine()
 			if err != nil {
 				if err != io.EOF && !strings.Contains(err.Error(), "file already closed") {
-					logger.Error(fmt.Sprintf("pipe unix process output error: %s", err))
+					logger.ErrorContext(context.Background(), fmt.Sprintf("pipe unix process output error: %s", err))
 				}
 
 				break
 			}
 
 			if len(line) != 0 {
-				logger.Debug(string(line))
+				logger.DebugContext(context.Background(), string(line))
 			}
 		}
 	}
 
-	go logCommandOutput(cmd.logger.Named("stdout"), stdout)
-	go logCommandOutput(cmd.logger.Named("stderr"), stderr)
+	go logCommandOutput(cmd.logger.With(slog.String("logger", "stdout")), stdout)
+	go logCommandOutput(cmd.logger.With(slog.String("logger", "stderr")), stderr)
 
 	return nil
 }
@@ -196,13 +253,13 @@ func (cmd *Cmd) Kill() error {
 
 	err := syscall.Kill(-cmd.process.Process.Pid, syscall.SIGKILL)
 	if err == nil {
-		cmd.logger.Debug("unix process killed")
+		cmd.logger.DebugContext(context.Background(), "unix process killed")
 		return nil
 	}
 
 	// If the process does not exist anymore, the error is irrelevant.
 	if strings.Contains(err.Error(), "no such process") {
-		cmd.logger.Debug("unix process already killed")
+		cmd.logger.DebugContext(context.Background(), "unix process already killed")
 		return nil
 	}
 

pkg/gotenberg/cmd_test.go

@@ -0,0 +1,136 @@
+package gotenberg
+
+import (
+	"context"
+	"log/slog"
+	"testing"
+
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	sdktrace "go.opentelemetry.io/otel/sdk/trace"
+	"go.opentelemetry.io/otel/sdk/trace/tracetest"
+)
+
+func newTestSpanRecorder(t *testing.T) *tracetest.SpanRecorder {
+	t.Helper()
+	recorder := tracetest.NewSpanRecorder()
+	provider := sdktrace.NewTracerProvider(sdktrace.WithSpanProcessor(recorder))
+	previous := otel.GetTracerProvider()
+	otel.SetTracerProvider(provider)
+	t.Cleanup(func() { otel.SetTracerProvider(previous) })
+	return recorder
+}
+
+func findSpan(recorder *tracetest.SpanRecorder, name string) sdktrace.ReadOnlySpan {
+	for _, s := range recorder.Ended() {
+		if s.Name() == name {
+			return s
+		}
+	}
+	return nil
+}
+
+func spanAttr(span sdktrace.ReadOnlySpan, key string) (attribute.Value, bool) {
+	for _, kv := range span.Attributes() {
+		if string(kv.Key) == key {
+			return kv.Value, true
+		}
+	}
+	return attribute.Value{}, false
+}
+
+func TestCmd_Exec_NilContext(t *testing.T) {
+	cmd := Command(slog.New(slog.DiscardHandler), "true")
+
+	code, err := cmd.Exec()
+	if err == nil {
+		t.Error("expected an error for a nil context")
+	}
+	if code != 10 {
+		t.Errorf("expected code 10, got %d", code)
+	}
+}
+
+func TestCmd_Exec_NoParentSpanProducesNoSpan(t *testing.T) {
+	recorder := newTestSpanRecorder(t)
+
+	cmd, err := CommandContext(context.Background(), slog.New(slog.DiscardHandler), "sh", "-c", "exit 0")
+	if err != nil {
+		t.Fatalf("create command: %v", err)
+	}
+
+	code, err := cmd.Exec()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if code != 0 {
+		t.Errorf("expected code 0, got %d", code)
+	}
+	if n := len(recorder.Ended()); n != 0 {
+		t.Errorf("expected no span without an active parent, got %d", n)
+	}
+}
+
+func TestCmd_Exec_RecordsSpanOnSuccess(t *testing.T) {
+	recorder := newTestSpanRecorder(t)
+
+	ctx, parent := otel.Tracer("test").Start(context.Background(), "parent")
+	cmd, err := CommandContext(ctx, slog.New(slog.DiscardHandler), "sh", "-c", "exit 0")
+	if err != nil {
+		t.Fatalf("create command: %v", err)
+	}
+
+	code, err := cmd.Exec()
+	parent.End()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if code != 0 {
+		t.Errorf("expected code 0, got %d", code)
+	}
+
+	span := findSpan(recorder, "process.exec")
+	if span == nil {
+		t.Fatal("expected a process.exec span to be recorded")
+	}
+	if span.Status().Code != codes.Ok {
+		t.Errorf("expected status Ok, got %v", span.Status().Code)
+	}
+	if name, ok := spanAttr(span, "process.executable.name"); !ok || name.AsString() != "sh" {
+		t.Errorf("expected process.executable.name=sh, got %q (present=%t)", name.AsString(), ok)
+	}
+	if exit, ok := spanAttr(span, "process.exit.code"); !ok || exit.AsInt64() != 0 {
+		t.Errorf("expected process.exit.code=0, got %d (present=%t)", exit.AsInt64(), ok)
+	}
+}
+
+func TestCmd_Exec_RecordsSpanOnError(t *testing.T) {
+	recorder := newTestSpanRecorder(t)
+
+	ctx, parent := otel.Tracer("test").Start(context.Background(), "parent")
+	cmd, err := CommandContext(ctx, slog.New(slog.DiscardHandler), "sh", "-c", "exit 3")
+	if err != nil {
+		t.Fatalf("create command: %v", err)
+	}
+
+	code, err := cmd.Exec()
+	parent.End()
+	if err == nil {
+		t.Error("expected an error for a non-zero exit code")
+	}
+	if code != 3 {
+		t.Errorf("expected exit code 3, got %d", code)
+	}
+
+	span := findSpan(recorder, "process.exec")
+	if span == nil {
+		t.Fatal("expected a process.exec span to be recorded")
+	}
+	if span.Status().Code != codes.Error {
+		t.Errorf("expected status Error, got %v", span.Status().Code)
+	}
+	if et, ok := spanAttr(span, "error.type"); !ok || et.AsString() != "process_error" {
+		t.Errorf("expected error.type=process_error, got %q (present=%t)", et.AsString(), ok)
+	}
+}

pkg/gotenberg/doc.go

@@ -1,7 +1,7 @@
-// Package gotenberg provides most of the logic of the module system.
+// Package gotenberg implements the core module system.
 //
-// caddyserver/caddy, licensed under the Apache License 2.0, has significantly
-// inspired this module system.
+// Significantly inspired by caddyserver/caddy, licensed under the Apache
+// License 2.0.
 //
-// More details are available on https://caddyserver.com/.
+// See https://caddyserver.com/.
 package gotenberg

pkg/gotenberg/errortype.go

@@ -0,0 +1,52 @@
+package gotenberg
+
+import (
+	"context"
+	"errors"
+
+	semconv "go.opentelemetry.io/otel/semconv/v1.41.0"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// Engine-agnostic, low-cardinality error.type values shared by the conversion
+// engines. They are safe to use both as the semconv error.type span attribute
+// and as bounded metric label values.
+const (
+	ErrorTypeTimeout           = "timeout"
+	ErrorTypeContextCancelled  = "context_cancelled"
+	ErrorTypeQueueSizeExceeded = "queue_size_exceeded"
+	ErrorTypeProcessRestarting = "process_restarting"
+	ErrorTypeInvalidInput      = "invalid_input"
+	ErrorTypeUnknown           = "unknown"
+)
+
+// ClassifyError maps err to a bounded, engine-agnostic error.type value. It
+// recognizes the failure modes shared by every engine: deadline, cancellation,
+// queue saturation, and process restart. It returns an empty string for a nil
+// error and [ErrorTypeUnknown] for anything it does not recognize, leaving
+// engine-specific refinement (such as [ErrorTypeInvalidInput]) to the caller.
+func ClassifyError(err error) string {
+	switch {
+	case err == nil:
+		return ""
+	case errors.Is(err, context.DeadlineExceeded):
+		return ErrorTypeTimeout
+	case errors.Is(err, context.Canceled):
+		return ErrorTypeContextCancelled
+	case errors.Is(err, ErrMaximumQueueSizeExceeded):
+		return ErrorTypeQueueSizeExceeded
+	case errors.Is(err, ErrProcessAlreadyRestarting):
+		return ErrorTypeProcessRestarting
+	default:
+		return ErrorTypeUnknown
+	}
+}
+
+// SpanErrorType records errorType as the semconv error.type attribute on span.
+// It is a no-op when errorType is empty.
+func SpanErrorType(span trace.Span, errorType string) {
+	if errorType == "" {
+		return
+	}
+	span.SetAttributes(semconv.ErrorTypeKey.String(errorType))
+}

pkg/gotenberg/errortype_test.go

@@ -0,0 +1,60 @@
+package gotenberg
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"testing"
+
+	"go.opentelemetry.io/otel"
+)
+
+func TestClassifyError(t *testing.T) {
+	for _, tc := range []struct {
+		name string
+		err  error
+		want string
+	}{
+		{"nil", nil, ""},
+		{"deadline", context.DeadlineExceeded, ErrorTypeTimeout},
+		{"canceled", context.Canceled, ErrorTypeContextCancelled},
+		{"queue size exceeded", ErrMaximumQueueSizeExceeded, ErrorTypeQueueSizeExceeded},
+		{"process restarting", ErrProcessAlreadyRestarting, ErrorTypeProcessRestarting},
+		{"wrapped deadline", fmt.Errorf("convert: %w", context.DeadlineExceeded), ErrorTypeTimeout},
+		{"joined queue", errors.Join(errors.New("attempt"), ErrMaximumQueueSizeExceeded), ErrorTypeQueueSizeExceeded},
+		{"arbitrary", errors.New("boom"), ErrorTypeUnknown},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			if got := ClassifyError(tc.err); got != tc.want {
+				t.Errorf("ClassifyError(%v) = %q, want %q", tc.err, got, tc.want)
+			}
+		})
+	}
+}
+
+func TestSpanErrorType(t *testing.T) {
+	recorder := newTestSpanRecorder(t)
+
+	_, span := otel.Tracer("test").Start(context.Background(), "engine.Op")
+	SpanErrorType(span, "")               // no-op, must not add an attribute
+	SpanErrorType(span, ErrorTypeTimeout) // sets error.type
+	span.End()
+
+	got := findSpan(recorder, "engine.Op")
+	if got == nil {
+		t.Fatal("expected the span to be recorded")
+	}
+
+	count := 0
+	for _, kv := range got.Attributes() {
+		if string(kv.Key) == "error.type" {
+			count++
+			if kv.Value.AsString() != ErrorTypeTimeout {
+				t.Errorf("expected error.type=%q, got %q", ErrorTypeTimeout, kv.Value.AsString())
+			}
+		}
+	}
+	if count != 1 {
+		t.Errorf("expected exactly one error.type attribute, got %d", count)
+	}
+}

pkg/gotenberg/filter.go

@@ -12,40 +12,57 @@ import (
 // ErrFiltered happens if a value is filtered by the [FilterDeadline] function.
 var ErrFiltered = errors.New("value filtered")
 
-// FilterDeadline checks if given value is allowed and not denied according to
-// regex patterns. It returns a [context.DeadlineExceeded] if it takes too long
-// to process.
-func FilterDeadline(allowed, denied *regexp2.Regexp, s string, deadline time.Time) error {
-	// FIXME: not ideal to compile everytime, but is there another way to create a clone?
-	if allowed.String() != "" {
-		allow := regexp2.MustCompile(allowed.String(), 0)
-		allow.MatchTimeout = time.Until(deadline)
+// FilterDeadline checks if the given value is allowed and not denied according
+// to regex patterns. The allowed list uses OR semantics (value must match at
+// least one pattern). The denied list uses OR semantics (value is denied if it
+// matches any pattern). It returns a [context.DeadlineExceeded] if it takes
+// too long to process.
+func FilterDeadline(allowed, denied []*regexp2.Regexp, s string, deadline time.Time) error {
+	if len(allowed) > 0 {
+		matched := false
 
-		ok, err := allow.MatchString(s)
-		if err != nil {
-			if time.Now().After(deadline) {
-				return context.DeadlineExceeded
+		for _, pattern := range allowed {
+			// FIXME: not ideal to compile everytime, but is there another way to create a clone?
+			clone := regexp2.MustCompile(pattern.String(), 0)
+			clone.MatchTimeout = time.Until(deadline)
+
+			ok, err := clone.MatchString(s)
+			if err != nil {
+				if time.Now().After(deadline) {
+					return context.DeadlineExceeded
+				}
+
+				return fmt.Errorf("'%s' cannot handle '%s': %w", clone.String(), s, err)
+			}
+
+			if ok {
+				matched = true
+				break
 			}
-			return fmt.Errorf("'%s' cannot handle '%s': %w", allow.String(), s, err)
 		}
-		if !ok {
-			return fmt.Errorf("'%s' does not match the expression from the allowed list: %w", s, ErrFiltered)
+
+		if !matched {
+			return fmt.Errorf("'%s' does not match any expression from the allowed list: %w", s, ErrFiltered)
 		}
 	}
 
-	if denied.String() != "" {
-		deny := regexp2.MustCompile(denied.String(), 0)
-		deny.MatchTimeout = time.Until(deadline)
+	if len(denied) > 0 {
+		for _, pattern := range denied {
+			clone := regexp2.MustCompile(pattern.String(), 0)
+			clone.MatchTimeout = time.Until(deadline)
 
-		ok, err := deny.MatchString(s)
-		if err != nil {
-			if time.Now().After(deadline) {
-				return context.DeadlineExceeded
+			ok, err := clone.MatchString(s)
+			if err != nil {
+				if time.Now().After(deadline) {
+					return context.DeadlineExceeded
+				}
+
+				return fmt.Errorf("'%s' cannot handle '%s': %w", clone.String(), s, err)
+			}
+
+			if ok {
+				return fmt.Errorf("'%s' matches the expression from the denied list: %w", s, ErrFiltered)
 			}
-			return fmt.Errorf("'%s' cannot handle '%s': %w", deny.String(), s, err)
-		}
-		if ok {
-			return fmt.Errorf("'%s' matches the expression from the denied list: %w", s, ErrFiltered)
 		}
 	}
 

pkg/gotenberg/filter_test.go

@@ -12,8 +12,8 @@ import (
 func TestFilterDeadline(t *testing.T) {
 	for _, tc := range []struct {
 		scenario      string
-		allowed       *regexp2.Regexp
-		denied        *regexp2.Regexp
+		allowed       []*regexp2.Regexp
+		denied        []*regexp2.Regexp
 		s             string
 		deadline      time.Time
 		expectError   bool
@@ -21,17 +21,17 @@ func TestFilterDeadline(t *testing.T) {
 	}{
 		{
 			scenario:      "DeadlineExceeded (allowed)",
-			allowed:       regexp2.MustCompile("foo", 0),
-			denied:        regexp2.MustCompile("", 0),
+			allowed:       []*regexp2.Regexp{regexp2.MustCompile("foo", 0)},
+			denied:        nil,
 			s:             "foo",
 			deadline:      time.Now().Add(time.Duration(-1) * time.Hour),
 			expectError:   true,
 			expectedError: context.DeadlineExceeded,
 		},
 		{
-			scenario:      "ErrFiltered (allowed)",
-			allowed:       regexp2.MustCompile("foo", 0),
-			denied:        regexp2.MustCompile("", 0),
+			scenario:      "ErrFiltered (allowed, no match)",
+			allowed:       []*regexp2.Regexp{regexp2.MustCompile("foo", 0)},
+			denied:        nil,
 			s:             "bar",
 			deadline:      time.Now().Add(time.Duration(5) * time.Second),
 			expectError:   true,
@@ -39,8 +39,8 @@ func TestFilterDeadline(t *testing.T) {
 		},
 		{
 			scenario:      "DeadlineExceeded (denied)",
-			allowed:       regexp2.MustCompile("", 0),
-			denied:        regexp2.MustCompile("foo", 0),
+			allowed:       nil,
+			denied:        []*regexp2.Regexp{regexp2.MustCompile("foo", 0)},
 			s:             "foo",
 			deadline:      time.Now().Add(time.Duration(-1) * time.Hour),
 			expectError:   true,
@@ -48,21 +48,55 @@ func TestFilterDeadline(t *testing.T) {
 		},
 		{
 			scenario:      "ErrFiltered (denied)",
-			allowed:       regexp2.MustCompile("", 0),
-			denied:        regexp2.MustCompile("foo", 0),
+			allowed:       nil,
+			denied:        []*regexp2.Regexp{regexp2.MustCompile("foo", 0)},
 			s:             "foo",
 			deadline:      time.Now().Add(time.Duration(5) * time.Second),
 			expectError:   true,
 			expectedError: ErrFiltered,
 		},
 		{
-			scenario:    "success",
-			allowed:     regexp2.MustCompile("", 0),
-			denied:      regexp2.MustCompile("", 0),
+			scenario:    "success (empty lists)",
+			allowed:     nil,
+			denied:      nil,
 			s:           "foo",
 			deadline:    time.Now().Add(time.Duration(5) * time.Second),
 			expectError: false,
 		},
+		{
+			scenario:    "multi-pattern allow list, second matches",
+			allowed:     []*regexp2.Regexp{regexp2.MustCompile("^https://", 0), regexp2.MustCompile("^file:///tmp/", 0)},
+			denied:      nil,
+			s:           "file:///tmp/abc/index.html",
+			deadline:    time.Now().Add(time.Duration(5) * time.Second),
+			expectError: false,
+		},
+		{
+			scenario:      "multi-pattern allow list, none matches",
+			allowed:       []*regexp2.Regexp{regexp2.MustCompile("^https://", 0), regexp2.MustCompile("^ftp://", 0)},
+			denied:        nil,
+			s:             "file:///tmp/abc/index.html",
+			deadline:      time.Now().Add(time.Duration(5) * time.Second),
+			expectError:   true,
+			expectedError: ErrFiltered,
+		},
+		{
+			scenario:      "multi-pattern deny list, second matches",
+			allowed:       nil,
+			denied:        []*regexp2.Regexp{regexp2.MustCompile("^ftp://", 0), regexp2.MustCompile("^file:.*", 0)},
+			s:             "file:///etc/passwd",
+			deadline:      time.Now().Add(time.Duration(5) * time.Second),
+			expectError:   true,
+			expectedError: ErrFiltered,
+		},
+		{
+			scenario:    "https URL passes deny list targeting file://",
+			allowed:     nil,
+			denied:      []*regexp2.Regexp{regexp2.MustCompile("^file:.*", 0)},
+			s:           "https://example.com",
+			deadline:    time.Now().Add(time.Duration(5) * time.Second),
+			expectError: false,
+		},
 	} {
 		t.Run(tc.scenario, func(t *testing.T) {
 			err := FilterDeadline(tc.allowed, tc.denied, tc.s, tc.deadline)

pkg/gotenberg/flags.go

@@ -222,3 +222,32 @@ func (f *ParsedFlags) MustDeprecatedRegexp(deprecated string, newName string) *r
 
 	return f.MustRegexp(newName)
 }
+
+// MustRegexpSlice returns a slice of compiled regular expressions from a
+// string-slice flag given by name. Empty strings are skipped.
+// It panics if an error occurs.
+func (f *ParsedFlags) MustRegexpSlice(name string) []*regexp2.Regexp {
+	vals := f.MustStringSlice(name)
+
+	var regexps []*regexp2.Regexp
+	for _, val := range vals {
+		if val == "" {
+			continue
+		}
+
+		regexps = append(regexps, regexp2.MustCompile(val, 0))
+	}
+
+	return regexps
+}
+
+// MustDeprecatedRegexpSlice returns the slice of compiled regular expressions
+// of a deprecated flag if it was explicitly set or the slice of the new flag.
+// It panics if an error occurs.
+func (f *ParsedFlags) MustDeprecatedRegexpSlice(deprecated string, newName string) []*regexp2.Regexp {
+	if f.Changed(deprecated) {
+		return f.MustRegexpSlice(deprecated)
+	}
+
+	return f.MustRegexpSlice(newName)
+}

pkg/gotenberg/flags_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/dlclark/regexp2"
 	flag "github.com/spf13/pflag"
 )
 
@@ -833,3 +834,120 @@ func TestParsedFlags_MustDeprecatedRegexp(t *testing.T) {
 		})
 	}
 }
+
+func TestParsedFlags_MustRegexpSlice(t *testing.T) {
+	fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+	fs.StringSlice("foo", []string{}, "")
+
+	err := fs.Parse([]string{"--foo=^file:.*", "--foo=^ftp://.*"})
+	if err != nil {
+		t.Fatalf("expected no error but got: %v", err)
+	}
+
+	parsedFlags := ParsedFlags{FlagSet: fs}
+
+	for _, tc := range []struct {
+		scenario    string
+		name        string
+		expectPanic bool
+		expectLen   int
+	}{
+		{
+			scenario:    "success with multiple patterns",
+			name:        "foo",
+			expectPanic: false,
+			expectLen:   2,
+		},
+		{
+			scenario:    "non-existing flag",
+			name:        "bar",
+			expectPanic: true,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			if tc.expectPanic {
+				defer func() {
+					if r := recover(); r == nil {
+						t.Fatal("expected panic but got none")
+					}
+				}()
+			}
+
+			if !tc.expectPanic {
+				defer func() {
+					if r := recover(); r != nil {
+						t.Fatalf("expected no panic but got: %v", r)
+					}
+				}()
+			}
+
+			result := parsedFlags.MustRegexpSlice(tc.name)
+
+			if !tc.expectPanic && len(result) != tc.expectLen {
+				t.Errorf("expected %d regexps but got %d", tc.expectLen, len(result))
+			}
+		})
+	}
+
+	// Test empty strings are skipped.
+	fs2 := flag.NewFlagSet("tests2", flag.ContinueOnError)
+	fs2.StringSlice("baz", []string{""}, "")
+
+	err = fs2.Parse([]string{})
+	if err != nil {
+		t.Fatalf("expected no error but got: %v", err)
+	}
+
+	parsedFlags2 := ParsedFlags{FlagSet: fs2}
+	result := parsedFlags2.MustRegexpSlice("baz")
+	if len(result) != 0 {
+		t.Errorf("expected 0 regexps for empty strings but got %d", len(result))
+	}
+}
+
+func TestParsedFlags_MustDeprecatedRegexpSlice(t *testing.T) {
+	for _, tc := range []struct {
+		scenario      string
+		rawFlags      []string
+		expectPattern string
+	}{
+		{
+			scenario:      "deprecated flag value",
+			rawFlags:      []string{"--foo=^file:.*"},
+			expectPattern: "^file:.*",
+		},
+		{
+			scenario:      "non-deprecated flag value",
+			rawFlags:      []string{"--bar=^ftp://.*"},
+			expectPattern: "^ftp://.*",
+		},
+		{
+			scenario:      "deprecated flag value > non-deprecated flag value",
+			rawFlags:      []string{"--foo=^file:.*", "--bar=^ftp://.*"},
+			expectPattern: "^file:.*",
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+			fs.StringSlice("foo", []string{}, "")
+			fs.StringSlice("bar", []string{}, "")
+
+			parsedFlags := ParsedFlags{FlagSet: fs}
+
+			err := parsedFlags.Parse(tc.rawFlags)
+			if err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+
+			actual := parsedFlags.MustDeprecatedRegexpSlice("foo", "bar")
+			if len(actual) != 1 {
+				t.Fatalf("expected 1 regexp but got %d", len(actual))
+			}
+			if actual[0].String() != tc.expectPattern {
+				t.Errorf("expected pattern '%s' but got '%s'", tc.expectPattern, actual[0].String())
+			}
+		})
+	}
+
+	_ = regexp2.None // Keep import alive.
+}

pkg/gotenberg/gc.go

@@ -1,19 +1,19 @@
 package gotenberg
 
 import (
+	"context"
 	"fmt"
+	"log/slog"
 	"os"
 	"path/filepath"
 	"strings"
 	"time"
-
-	"go.uber.org/zap"
 )
 
 // GarbageCollect scans the root path and deletes files or directories with
 // names containing specific substrings and before a given expiration time.
-func GarbageCollect(logger *zap.Logger, rootPath string, includeSubstr []string, expirationTime time.Time) error {
-	logger = logger.Named("gc")
+func GarbageCollect(ctx context.Context, logger *slog.Logger, rootPath string, includeSubstr []string, expirationTime time.Time) error {
+	logger = logger.With(slog.String("logger", "gc"))
 
 	// To make sure that the next Walk method stays on
 	// the root level of the considered path, we have to
@@ -38,12 +38,12 @@ func GarbageCollect(logger *zap.Logger, rootPath string, includeSubstr []string,
 
 		for _, substr := range includeSubstr {
 			if (strings.Contains(info.Name(), substr) || path == substr) && info.ModTime().Before(expirationTime) {
-				err := os.RemoveAll(path)
+				err := os.RemoveAll(path) //nolint:gosec // G122: rootPath is a trusted internal working directory
 				if err != nil {
 					return fmt.Errorf("garbage collect '%s': %w", path, err)
 				}
 
-				logger.Debug(fmt.Sprintf("'%s' removed", path))
+				logger.DebugContext(ctx, fmt.Sprintf("'%s' removed", path))
 
 				return skipDirOrNil(info)
 			}

pkg/gotenberg/gc_test.go

@@ -1,14 +1,15 @@
 package gotenberg
 
 import (
+	"context"
 	"fmt"
+	"log/slog"
 	"os"
 	"path"
 	"testing"
 	"time"
 
 	"github.com/google/uuid"
-	"go.uber.org/zap"
 )
 
 func TestGarbageCollect(t *testing.T) {
@@ -66,7 +67,7 @@ func TestGarbageCollect(t *testing.T) {
 				}
 			}()
 
-			err := GarbageCollect(zap.NewNop(), tc.rootPath, tc.includeSubstr, time.Now())
+			err := GarbageCollect(context.Background(), slog.New(slog.DiscardHandler), tc.rootPath, tc.includeSubstr, time.Now())
 
 			if !tc.expectError && err != nil {
 				t.Fatalf("expected no error but got: %v", err)

pkg/gotenberg/internal/log/color.go

@@ -1,9 +1,8 @@
-package logging
+package log
 
 import (
 	"fmt"
-
-	"go.uber.org/zap/zapcore"
+	"log/slog"
 )
 
 // Foreground colors.
@@ -25,23 +24,15 @@ func (c color) Add(s string) string {
 	return fmt.Sprintf("\x1b[%dm%s\x1b[0m", uint8(c), s)
 }
 
-func levelToColor(l zapcore.Level) color {
+func levelToColor(l slog.Level) color {
 	switch l {
-	case zapcore.DebugLevel:
+	case slog.LevelDebug:
 		return cyan
-	case zapcore.InfoLevel:
+	case slog.LevelInfo:
 		return blue
-	case zapcore.WarnLevel:
+	case slog.LevelWarn:
 		return yellow
-	case zapcore.ErrorLevel:
-		return red
-	case zapcore.DPanicLevel:
-		return red
-	case zapcore.PanicLevel:
-		return red
-	case zapcore.FatalLevel:
-		return red
-	case zapcore.InvalidLevel:
+	case slog.LevelError:
 		return red
 	default:
 		return red

pkg/gotenberg/internal/log/doc.go

@@ -0,0 +1,2 @@
+// Package log gathers internal logging utilities.
+package log

pkg/gotenberg/internal/log/gcp.go

@@ -0,0 +1,18 @@
+package log
+
+import "log/slog"
+
+func gcpSeverity(l slog.Level) string {
+	switch {
+	case l < slog.LevelInfo:
+		return "DEBUG"
+	case l < slog.LevelWarn:
+		return "INFO"
+	case l < slog.LevelError:
+		return "WARNING"
+	case l >= slog.LevelError:
+		return "ERROR"
+	default:
+		return "DEFAULT"
+	}
+}

pkg/gotenberg/internal/log/handler.go

@@ -0,0 +1,171 @@
+package log
+
+import (
+	"context"
+	"errors"
+	"log/slog"
+)
+
+type gotenbergHandler struct {
+	slog.Handler
+	fieldsPrefix string
+	loggerName   string
+}
+
+func NewGotenbergHandler(next slog.Handler, prefix string) slog.Handler {
+	return &gotenbergHandler{Handler: next, fieldsPrefix: prefix}
+}
+
+func (h *gotenbergHandler) Handle(ctx context.Context, r slog.Record) error {
+	var newAttrs []slog.Attr
+
+	if h.loggerName != "" {
+		newAttrs = append(newAttrs, slog.String("logger", h.loggerName))
+	}
+
+	var needsNewRecord bool
+	if len(newAttrs) > 0 {
+		needsNewRecord = true
+	}
+
+	if h.fieldsPrefix != "" {
+		r.Attrs(func(a slog.Attr) bool {
+			if a.Key == "logger" || a.Key == "correlation_id" || a.Key == "trace_id" || a.Key == "span_id" {
+				newAttrs = append(newAttrs, a)
+				needsNewRecord = true
+				return true
+			}
+			a.Key = h.fieldsPrefix + "_" + a.Key
+			newAttrs = append(newAttrs, a)
+			needsNewRecord = true
+			return true
+		})
+	} else if needsNewRecord {
+		r.Attrs(func(a slog.Attr) bool {
+			newAttrs = append(newAttrs, a)
+			return true
+		})
+	}
+
+	if needsNewRecord {
+		newR := slog.NewRecord(r.Time, r.Level, r.Message, r.PC)
+		newR.AddAttrs(newAttrs...)
+		r = newR
+	}
+
+	return h.Handler.Handle(ctx, r)
+}
+
+func (h *gotenbergHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
+	var prefixed []slog.Attr
+	newLoggerName := h.loggerName
+
+	for _, a := range attrs {
+		if a.Key == "logger" {
+			if newLoggerName == "" {
+				newLoggerName = a.Value.String()
+			} else {
+				newLoggerName = newLoggerName + "." + a.Value.String()
+			}
+			continue
+		}
+
+		if h.fieldsPrefix != "" {
+			if a.Key == "correlation_id" || a.Key == "trace_id" || a.Key == "span_id" {
+				// Don't prefix these keys
+			} else {
+				a.Key = h.fieldsPrefix + "_" + a.Key
+			}
+		}
+		prefixed = append(prefixed, a)
+	}
+
+	newHandler := h.Handler
+	if len(prefixed) > 0 {
+		newHandler = h.Handler.WithAttrs(prefixed)
+	}
+
+	return &gotenbergHandler{
+		Handler:      newHandler,
+		fieldsPrefix: h.fieldsPrefix,
+		loggerName:   newLoggerName,
+	}
+}
+
+func (h *gotenbergHandler) WithGroup(name string) slog.Handler {
+	return &gotenbergHandler{
+		Handler:      h.Handler.WithGroup(name),
+		fieldsPrefix: h.fieldsPrefix,
+		loggerName:   h.loggerName,
+	}
+}
+
+type multiHandler struct {
+	handlers []slog.Handler
+}
+
+func FanOut(handlers ...slog.Handler) slog.Handler {
+	return &multiHandler{handlers: handlers}
+}
+
+func (m *multiHandler) Enabled(ctx context.Context, level slog.Level) bool {
+	for _, h := range m.handlers {
+		if h.Enabled(ctx, level) {
+			return true
+		}
+	}
+	return false
+}
+
+func (m *multiHandler) Handle(ctx context.Context, r slog.Record) error {
+	var errs []error
+	for _, h := range m.handlers {
+		if h.Enabled(ctx, r.Level) {
+			if err := h.Handle(ctx, r.Clone()); err != nil {
+				errs = append(errs, err)
+			}
+		}
+	}
+	return errors.Join(errs...)
+}
+
+func (m *multiHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
+	cloned := make([]slog.Handler, len(m.handlers))
+	for i, h := range m.handlers {
+		cloned[i] = h.WithAttrs(attrs)
+	}
+	return &multiHandler{handlers: cloned}
+}
+
+func (m *multiHandler) WithGroup(name string) slog.Handler {
+	cloned := make([]slog.Handler, len(m.handlers))
+	for i, h := range m.handlers {
+		cloned[i] = h.WithGroup(name)
+	}
+	return &multiHandler{handlers: cloned}
+}
+
+type levelHandler struct {
+	slog.Handler
+	level slog.Level
+}
+
+func LevelFilter(next slog.Handler, level slog.Level) slog.Handler {
+	return &levelHandler{Handler: next, level: level}
+}
+
+func (h *levelHandler) Enabled(ctx context.Context, level slog.Level) bool {
+	return level >= h.level && h.Handler.Enabled(ctx, level)
+}
+
+func (h *levelHandler) Handle(ctx context.Context, r slog.Record) error {
+	return h.Handler.Handle(ctx, r)
+}
+
+func (h *levelHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
+	return &levelHandler{Handler: h.Handler.WithAttrs(attrs), level: h.level}
+}
+
+func (h *levelHandler) WithGroup(name string) slog.Handler {
+	return &levelHandler{Handler: h.Handler.WithGroup(name), level: h.level}
+}

pkg/gotenberg/internal/log/log.go

@@ -0,0 +1,37 @@
+package log
+
+import (
+	"log/slog"
+	"sync"
+)
+
+// InitLogger initializes the global logger.
+func InitLogger(handler slog.Handler) {
+	if logger != nil {
+		return
+	}
+
+	mu.Lock()
+	defer mu.Unlock()
+
+	// Double check: ensure it wasn't initialized while we waited for the lock.
+	if logger != nil {
+		return
+	}
+
+	logger = slog.New(handler)
+}
+
+// Logger returns the global logger.
+func Logger() *slog.Logger {
+	mu.Lock()
+	defer mu.Unlock()
+
+	return logger
+}
+
+// logger is Singleton so that we instantiate our [slog.Logger] only once.
+var (
+	logger *slog.Logger
+	mu     sync.Mutex
+)

pkg/gotenberg/internal/log/stdhandler.go

@@ -0,0 +1,137 @@
+package log
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"strings"
+
+	"go.opentelemetry.io/otel/trace"
+	"golang.org/x/term"
+)
+
+const (
+	autoLoggingFormat = "auto"
+	jsonLoggingFormat = "json"
+	textLoggingFormat = "text"
+)
+
+// traceContextHandler is an internal wrapper that specifically injects
+// trace_id and span_id into the log record before they are written to the standard output.
+type traceContextHandler struct {
+	slog.Handler
+}
+
+func (h traceContextHandler) Handle(ctx context.Context, r slog.Record) error {
+	if spanCtx := trace.SpanContextFromContext(ctx); spanCtx.IsValid() {
+		// Since slog.Record is immutable with regards to adding attributes in-place,
+		// we must clone and add them.
+		newR := slog.NewRecord(r.Time, r.Level, r.Message, r.PC)
+		r.Attrs(func(a slog.Attr) bool {
+			newR.AddAttrs(a)
+			return true
+		})
+		newR.AddAttrs(
+			slog.String("trace_id", spanCtx.TraceID().String()),
+			slog.String("span_id", spanCtx.SpanID().String()),
+		)
+		r = newR
+	}
+
+	return h.Handler.Handle(ctx, r)
+}
+
+func (h traceContextHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
+	return traceContextHandler{Handler: h.Handler.WithAttrs(attrs)}
+}
+
+func (h traceContextHandler) WithGroup(name string) slog.Handler {
+	return traceContextHandler{Handler: h.Handler.WithGroup(name)}
+}
+
+// NewStdHandler returns a [slog.Handler] instance for the standard output.
+// upperLevelCase is the value of the level-case setting that keeps the level
+// field uppercase in the standard output. It mirrors gotenberg.UpperLevelCase,
+// duplicated here because the internal log package cannot import gotenberg.
+const upperLevelCase = "upper"
+
+func NewStdHandler(level slog.Level, format string, fieldsPrefix string, enableGcpFields bool, levelCase string) (slog.Handler, error) {
+	// #nosec: G115
+	isTerminal := term.IsTerminal(int(os.Stdout.Fd()))
+
+	// Normalize the log format based on the output device.
+	if format == autoLoggingFormat {
+		if isTerminal {
+			format = textLoggingFormat
+		} else {
+			format = jsonLoggingFormat
+		}
+	}
+
+	opts := &slog.HandlerOptions{
+		Level: level,
+	}
+
+	opts.ReplaceAttr = func(groups []string, a slog.Attr) slog.Attr {
+		// Configure level encoding based on format and GCP settings.
+		if a.Key == slog.LevelKey {
+			l := a.Value.Any().(slog.Level)
+			switch {
+			case format == textLoggingFormat && isTerminal:
+				if enableGcpFields {
+					a.Value = slog.StringValue(gcpSeverityColorEncoder(l))
+				} else {
+					a.Value = slog.StringValue(levelToColor(l).Add(l.String()))
+				}
+			case enableGcpFields && format != textLoggingFormat:
+				a.Key = "severity"
+				a.Value = slog.StringValue(gcpSeverity(l))
+			default:
+				if levelCase == upperLevelCase {
+					a.Value = slog.StringValue(l.String())
+				} else {
+					a.Value = slog.StringValue(strings.ToLower(l.String()))
+				}
+			}
+		}
+
+		if a.Key == slog.TimeKey {
+			if enableGcpFields && format != textLoggingFormat {
+				a.Key = "time"
+			} else {
+				a.Key = "ts"
+			}
+
+			if isTerminal {
+				a.Value = slog.StringValue(a.Value.Time().Local().Format("2006/01/02 15:04:05.000"))
+			} else if !enableGcpFields {
+				a.Value = slog.Float64Value(float64(a.Value.Time().UnixNano()) / 1e9)
+			}
+		}
+
+		if a.Key == slog.MessageKey {
+			if enableGcpFields && format != textLoggingFormat {
+				a.Key = "message"
+			} else {
+				a.Key = "msg"
+			}
+		}
+
+		return a
+	}
+
+	var handler slog.Handler
+	if format == textLoggingFormat {
+		handler = slog.NewTextHandler(os.Stderr, opts)
+	} else {
+		handler = slog.NewJSONHandler(os.Stderr, opts)
+	}
+
+	return traceContextHandler{Handler: handler}, nil
+}
+
+func gcpSeverityColorEncoder(l slog.Level) string {
+	severity := gcpSeverity(l)
+	c := levelToColor(l)
+	return c.Add(severity)
+}

pkg/gotenberg/internal/log/stdhandler_test.go

@@ -0,0 +1,53 @@
+package log
+
+import (
+	"encoding/json"
+	"io"
+	"log/slog"
+	"os"
+	"testing"
+)
+
+func TestNewStdHandler_LevelCase(t *testing.T) {
+	for _, tc := range []struct {
+		name      string
+		levelCase string
+		want      string
+	}{
+		{"lower is the default behavior", "lower", "info"},
+		{"upper keeps slog casing", "upper", "INFO"},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			original := os.Stderr
+			reader, writer, err := os.Pipe()
+			if err != nil {
+				t.Fatalf("create pipe: %v", err)
+			}
+			os.Stderr = writer
+			defer func() { os.Stderr = original }()
+
+			handler, err := NewStdHandler(slog.LevelInfo, "json", "", false, tc.levelCase)
+			if err != nil {
+				t.Fatalf("create handler: %v", err)
+			}
+
+			slog.New(handler).Info("hello")
+
+			if err := writer.Close(); err != nil {
+				t.Fatalf("close writer: %v", err)
+			}
+			out, err := io.ReadAll(reader)
+			if err != nil {
+				t.Fatalf("read output: %v", err)
+			}
+
+			var record map[string]any
+			if err := json.Unmarshal(out, &record); err != nil {
+				t.Fatalf("parse log line %q: %v", out, err)
+			}
+			if record["level"] != tc.want {
+				t.Errorf("level = %v, want %v", record["level"], tc.want)
+			}
+		})
+	}
+}

pkg/gotenberg/internal/otel/doc.go

@@ -0,0 +1,24 @@
+// Package otel gathers initialization utilities for OpenTelemetry
+// instrumentation.
+//
+// Significantly inspired by https://github.com/lucavallin/gotel.
+//
+// # Sampling
+//
+// No sampler is configured in code, so the SDK default applies:
+// parentbased_always_on. Every trace is recorded and exported. Operators tune
+// sampling through the standard environment variables, honored by the SDK:
+//
+//	OTEL_TRACES_SAMPLER       e.g. parentbased_traceidratio, always_off
+//	OTEL_TRACES_SAMPLER_ARG   e.g. 0.1 for a 10% ratio
+//
+// Head sampling drops whole traces up front, including the rare slow or failed
+// conversions that matter most for diagnosis. For high-throughput deployments,
+// prefer keeping head sampling permissive and applying tail sampling in the
+// collector (sample on error or high latency), which decides after a trace
+// completes. Gotenberg emits trace-based metric exemplars, so the conversion
+// histograms still link to representative traces regardless of the head
+// sampling ratio.
+//
+// See https://opentelemetry.io/.
+package otel

pkg/gotenberg/internal/otel/otel.go

@@ -0,0 +1,188 @@
+package otel
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"os"
+	"sync/atomic"
+
+	"go.opentelemetry.io/contrib/bridges/otelslog"
+	"go.opentelemetry.io/contrib/exporters/autoexport"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/log/global"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/sdk/log"
+	"go.opentelemetry.io/otel/sdk/metric"
+	"go.opentelemetry.io/otel/sdk/metric/exemplar"
+	"go.opentelemetry.io/otel/sdk/resource"
+	"go.opentelemetry.io/otel/sdk/trace"
+	semconv "go.opentelemetry.io/otel/semconv/v1.43.0"
+)
+
+// buildResource assembles the OpenTelemetry resource shared by the tracer,
+// meter, and logger providers. Detection is best-effort: a detector or merge
+// failure is logged and the build proceeds with whatever was gathered, so a
+// flaky environment never prevents telemetry from starting.
+//
+// The semconv version imported here must match the one the SDK resource
+// detectors use (go.opentelemetry.io/otel/sdk/resource). Drift makes
+// [resource.Merge] fail with [resource.ErrSchemaURLConflict] and strips the
+// schema URL off every exported signal.
+func buildResource(ctx context.Context, logger *slog.Logger, serviceName, serviceVersion string) *resource.Resource {
+	base := resource.NewWithAttributes(
+		semconv.SchemaURL,
+		semconv.ServiceName(serviceName),
+		semconv.ServiceVersion(serviceVersion),
+	)
+
+	// Granular detectors only. The WithProcess() bundle is deliberately omitted
+	// because it adds process.command_args/process.command_line, which can carry
+	// proxy credentials and host-resolver rules passed on the command line.
+	detected, err := resource.New(ctx,
+		resource.WithFromEnv(),
+		resource.WithTelemetrySDK(),
+		resource.WithHost(),
+		resource.WithHostID(),
+		resource.WithOS(),
+		resource.WithContainer(),
+		resource.WithProcessPID(),
+		resource.WithProcessExecutableName(),
+		resource.WithProcessExecutablePath(),
+		resource.WithProcessRuntimeName(),
+		resource.WithProcessRuntimeVersion(),
+		resource.WithProcessRuntimeDescription(),
+	)
+	if err != nil {
+		logger.WarnContext(ctx, fmt.Sprintf("partially detect OpenTelemetry resource: %s", err))
+	}
+	if detected == nil {
+		return base
+	}
+
+	// A schema URL conflict still yields a resource holding every attribute, only
+	// without a schema URL. Keep it: falling back to base would drop the host,
+	// OS, container, process, and OTEL_RESOURCE_ATTRIBUTES data.
+	merged, err := resource.Merge(detected, base)
+	if err != nil {
+		logger.WarnContext(ctx, fmt.Sprintf("merge OpenTelemetry resource: %s", err))
+	}
+	if merged == nil {
+		return base
+	}
+
+	return merged
+}
+
+// InitTracerProvider initializes the OpenTelemetry tracer provider.
+func InitTracerProvider(logger *slog.Logger, serviceName, serviceVersion string) (shutdown func(context.Context) error, err error) {
+	initOtelLogger(logger)
+
+	ctx := context.Background()
+
+	res := buildResource(ctx, logger, serviceName, serviceVersion)
+
+	traceOpts := []trace.TracerProviderOption{
+		trace.WithResource(res),
+	}
+
+	traceExporter, err := autoexport.NewSpanExporter(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	if !autoexport.IsNoneSpanExporter(traceExporter) {
+		traceOpts = append(traceOpts, trace.WithBatcher(traceExporter))
+	}
+
+	traceProvider := trace.NewTracerProvider(traceOpts...)
+	otel.SetTracerProvider(traceProvider)
+
+	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(
+		propagation.TraceContext{},
+		propagation.Baggage{},
+	))
+
+	return traceProvider.Shutdown, nil
+}
+
+// InitMeterProvider initializes the OpenTelemetry meter provider.
+func InitMeterProvider(logger *slog.Logger, serviceName, serviceVersion string) (shutdown func(context.Context) error, err error) {
+	initOtelLogger(logger)
+
+	ctx := context.Background()
+
+	res := buildResource(ctx, logger, serviceName, serviceVersion)
+
+	metricOpts := []metric.Option{
+		metric.WithResource(res),
+	}
+	metricOpts = append(metricOpts, exemplarFilterOptions()...)
+
+	metricReader, err := autoexport.NewMetricReader(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	if !autoexport.IsNoneMetricReader(metricReader) {
+		metricOpts = append(metricOpts, metric.WithReader(metricReader))
+	}
+
+	meterProvider := metric.NewMeterProvider(metricOpts...)
+	otel.SetMeterProvider(meterProvider)
+
+	return meterProvider.Shutdown, nil
+}
+
+// exemplarFilterOptions returns the meter provider options that pin trace-based
+// exemplars, so the histograms expose the trace id of a representative
+// measurement. It yields no option when the operator selects a filter via
+// OTEL_METRICS_EXEMPLAR_FILTER, letting the SDK's own env handling win.
+func exemplarFilterOptions() []metric.Option {
+	if _, ok := os.LookupEnv("OTEL_METRICS_EXEMPLAR_FILTER"); ok {
+		return nil
+	}
+	return []metric.Option{metric.WithExemplarFilter(exemplar.TraceBasedFilter)}
+}
+
+// InitLoggerProvider initializes the OpenTelemetry logger provider.
+func InitLoggerProvider(logger *slog.Logger, serviceName, serviceVersion string) (shutdown func(context.Context) error, handler slog.Handler, err error) {
+	initOtelLogger(logger)
+
+	ctx := context.Background()
+
+	res := buildResource(ctx, logger, serviceName, serviceVersion)
+
+	logOpts := []log.LoggerProviderOption{
+		log.WithResource(res),
+	}
+
+	logExporter, err := autoexport.NewLogExporter(ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if !autoexport.IsNoneLogExporter(logExporter) {
+		logOpts = append(logOpts, log.WithProcessor(log.NewBatchProcessor(logExporter)))
+	}
+
+	loggerProvider := log.NewLoggerProvider(logOpts...)
+	otelHandler := otelslog.NewHandler(serviceName, otelslog.WithLoggerProvider(loggerProvider))
+	global.SetLoggerProvider(loggerProvider)
+
+	return loggerProvider.Shutdown, otelHandler, nil
+}
+
+func initOtelLogger(logger *slog.Logger) {
+	if otlpLoggerInitialized.Load() {
+		return
+	}
+
+	otel.SetErrorHandler(otel.ErrorHandlerFunc(func(err error) {
+		logger.Error(err.Error())
+	}))
+
+	otlpLoggerInitialized.Store(true)
+}
+
+var otlpLoggerInitialized atomic.Bool

pkg/gotenberg/internal/otel/otel_test.go

@@ -0,0 +1,158 @@
+package otel
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"testing"
+
+	"go.opentelemetry.io/otel"
+	sdkmetric "go.opentelemetry.io/otel/sdk/metric"
+	"go.opentelemetry.io/otel/sdk/metric/exemplar"
+	"go.opentelemetry.io/otel/sdk/metric/metricdata"
+	sdktrace "go.opentelemetry.io/otel/sdk/trace"
+	semconv "go.opentelemetry.io/otel/semconv/v1.43.0"
+)
+
+func TestBuildResource(t *testing.T) {
+	res := buildResource(context.Background(), slog.New(slog.DiscardHandler), "gotenberg", "v8.0.0")
+
+	got := map[string]struct{}{}
+	values := map[string]string{}
+	for _, kv := range res.Attributes() {
+		got[string(kv.Key)] = struct{}{}
+		values[string(kv.Key)] = kv.Value.AsString()
+	}
+
+	// Guards the semconv version pinned in buildResource against the one the SDK
+	// resource detectors use. Drift makes resource.Merge conflict and drops the
+	// schema URL from every exported signal.
+	if res.SchemaURL() != semconv.SchemaURL {
+		t.Errorf("resource schema URL = %q, want %q", res.SchemaURL(), semconv.SchemaURL)
+	}
+
+	if values[string(semconv.ServiceNameKey)] != "gotenberg" {
+		t.Errorf("service.name = %q, want %q", values[string(semconv.ServiceNameKey)], "gotenberg")
+	}
+	if values[string(semconv.ServiceVersionKey)] != "v8.0.0" {
+		t.Errorf("service.version = %q, want %q", values[string(semconv.ServiceVersionKey)], "v8.0.0")
+	}
+
+	for _, key := range []string{
+		string(semconv.HostNameKey),
+		string(semconv.OSTypeKey),
+		string(semconv.ProcessRuntimeNameKey),
+	} {
+		if _, ok := got[key]; !ok {
+			t.Errorf("expected resource attribute %q to be present", key)
+		}
+	}
+
+	// The command-line bundle must never be detected (it can leak credentials).
+	for _, key := range []string{"process.command_args", "process.command_line"} {
+		if _, ok := got[key]; ok {
+			t.Errorf("did not expect sensitive resource attribute %q", key)
+		}
+	}
+}
+
+// TestInitTracerProvider_HonorsSamplerEnv guards the contract that the tracer
+// provider keeps honoring OTEL_TRACES_SAMPLER. The SDK reads it only when no
+// explicit sampler is configured, so any future WithSampler() would silently
+// break operator-side sampling control.
+func TestInitTracerProvider_HonorsSamplerEnv(t *testing.T) {
+	for _, tc := range []struct {
+		name        string
+		sampler     string
+		wantSampled bool
+	}{
+		{"always off", "always_off", false},
+		{"always on", "always_on", true},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Setenv("OTEL_TRACES_EXPORTER", "none")
+			t.Setenv("OTEL_TRACES_SAMPLER", tc.sampler)
+
+			shutdown, err := InitTracerProvider(slog.New(slog.DiscardHandler), "test", "v0.0.0")
+			if err != nil {
+				t.Fatalf("init tracer provider: %v", err)
+			}
+			t.Cleanup(func() { _ = shutdown(context.Background()) })
+
+			_, span := otel.Tracer("test").Start(context.Background(), "span")
+			span.End()
+
+			if got := span.SpanContext().IsSampled(); got != tc.wantSampled {
+				t.Errorf("OTEL_TRACES_SAMPLER=%q: IsSampled() = %v, want %v", tc.sampler, got, tc.wantSampled)
+			}
+		})
+	}
+}
+
+func TestExemplarFilterOptions(t *testing.T) {
+	t.Run("default pins trace-based", func(t *testing.T) {
+		if v, ok := os.LookupEnv("OTEL_METRICS_EXEMPLAR_FILTER"); ok {
+			os.Unsetenv("OTEL_METRICS_EXEMPLAR_FILTER")
+			t.Cleanup(func() { os.Setenv("OTEL_METRICS_EXEMPLAR_FILTER", v) })
+		}
+		if got := exemplarFilterOptions(); len(got) != 1 {
+			t.Errorf("expected 1 option when env unset, got %d", len(got))
+		}
+	})
+
+	t.Run("env override yields no option", func(t *testing.T) {
+		t.Setenv("OTEL_METRICS_EXEMPLAR_FILTER", "always_off")
+		if got := exemplarFilterOptions(); len(got) != 0 {
+			t.Errorf("expected 0 options when env set, got %d", len(got))
+		}
+	})
+}
+
+// TestMeterProvider_TraceBasedExemplar guards that the trace-based filter we pin
+// actually attaches a trace id to a histogram measurement recorded inside a
+// sampled span.
+func TestMeterProvider_TraceBasedExemplar(t *testing.T) {
+	reader := sdkmetric.NewManualReader()
+	provider := sdkmetric.NewMeterProvider(
+		sdkmetric.WithReader(reader),
+		sdkmetric.WithExemplarFilter(exemplar.TraceBasedFilter),
+	)
+	t.Cleanup(func() { _ = provider.Shutdown(context.Background()) })
+
+	hist, err := provider.Meter("test").Float64Histogram("conversion.duration")
+	if err != nil {
+		t.Fatalf("create histogram: %v", err)
+	}
+
+	tracer := sdktrace.NewTracerProvider(sdktrace.WithSampler(sdktrace.AlwaysSample())).Tracer("test")
+	ctx, span := tracer.Start(context.Background(), "conversion")
+	hist.Record(ctx, 1.0)
+	traceID := span.SpanContext().TraceID()
+	span.End()
+
+	var rm metricdata.ResourceMetrics
+	if err := reader.Collect(context.Background(), &rm); err != nil {
+		t.Fatalf("collect: %v", err)
+	}
+
+	var found bool
+	for _, sm := range rm.ScopeMetrics {
+		for _, m := range sm.Metrics {
+			hd, ok := m.Data.(metricdata.Histogram[float64])
+			if !ok {
+				continue
+			}
+			for _, dp := range hd.DataPoints {
+				for _, ex := range dp.Exemplars {
+					if string(ex.TraceID) == string(traceID[:]) {
+						found = true
+					}
+				}
+			}
+		}
+	}
+
+	if !found {
+		t.Error("expected a trace-based exemplar carrying the span trace id")
+	}
+}

pkg/gotenberg/logging.go

@@ -1,57 +1 @@
 package gotenberg
-
-import (
-	"fmt"
-
-	"github.com/hashicorp/go-retryablehttp"
-	"go.uber.org/zap"
-)
-
-// LoggerProvider is an interface for a module that supplies a method for
-// creating a [zap.Logger] instance for use by other modules.
-//
-//	func (m *YourModule) Provision(ctx *gotenberg.Context) error {
-//		provider, _ := ctx.Module(new(gotenberg.LoggerProvider))
-//		logger, _   := provider.(gotenberg.LoggerProvider).Logger(m)
-//	}
-type LoggerProvider interface {
-	Logger(mod Module) (*zap.Logger, error)
-}
-
-// LeveledLogger is a wrapper around a [zap.Logger] so that it may be used by a
-// [retryablehttp.Client].
-type LeveledLogger struct {
-	logger *zap.Logger
-}
-
-// NewLeveledLogger instantiates a [LeveledLogger].
-func NewLeveledLogger(logger *zap.Logger) *LeveledLogger {
-	return &LeveledLogger{
-		logger: logger,
-	}
-}
-
-// Error logs a message at the error level using the wrapped zap.Logger.
-func (leveled LeveledLogger) Error(msg string, keysAndValues ...any) {
-	leveled.logger.Error(fmt.Sprintf("%s: %+v", msg, keysAndValues))
-}
-
-// Warn logs a message at the warning level using the wrapped zap.Logger.
-func (leveled LeveledLogger) Warn(msg string, keysAndValues ...any) {
-	leveled.logger.Warn(fmt.Sprintf("%s: %+v", msg, keysAndValues))
-}
-
-// Info logs a message at the info level using the wrapped zap.Logger.
-func (leveled LeveledLogger) Info(msg string, keysAndValues ...any) {
-	leveled.logger.Info(fmt.Sprintf("%s: %+v", msg, keysAndValues))
-}
-
-// Debug logs a message at the debug level using the wrapped zap.Logger.
-func (leveled LeveledLogger) Debug(msg string, keysAndValues ...any) {
-	leveled.logger.Debug(fmt.Sprintf("%s: %+v", msg, keysAndValues))
-}
-
-// Interface guards.
-var (
-	_ retryablehttp.LeveledLogger = (*LeveledLogger)(nil)
-)

pkg/gotenberg/mocks.go

@@ -2,9 +2,8 @@ package gotenberg
 
 import (
 	"context"
+	"log/slog"
 	"os"
-
-	"go.uber.org/zap"
 )
 
 // ModuleMock is a mock for the [Module] interface.
@@ -46,48 +45,93 @@ func (mod *DebuggableMock) Debug() map[string]any {
 //
 //nolint:dupl
 type PdfEngineMock struct {
-	MergeMock         func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error
-	SplitMock         func(ctx context.Context, logger *zap.Logger, mode SplitMode, inputPath, outputDirPath string) ([]string, error)
-	FlattenMock       func(ctx context.Context, logger *zap.Logger, inputPath string) error
-	ConvertMock       func(ctx context.Context, logger *zap.Logger, formats PdfFormats, inputPath, outputPath string) error
-	ReadMetadataMock  func(ctx context.Context, logger *zap.Logger, inputPath string) (map[string]any, error)
-	WriteMetadataMock func(ctx context.Context, logger *zap.Logger, metadata map[string]any, inputPath string) error
-	EncryptMock       func(ctx context.Context, logger *zap.Logger, inputPath, userPassword, ownerPassword string) error
-	EmbedFilesMock    func(ctx context.Context, logger *zap.Logger, filePaths []string, inputPath string) error
+	MergeMock               func(ctx context.Context, logger *slog.Logger, inputPaths []string, outputPath string) error
+	SplitMock               func(ctx context.Context, logger *slog.Logger, mode SplitMode, inputPath, outputDirPath string) ([]string, error)
+	FlattenMock             func(ctx context.Context, logger *slog.Logger, inputPath string) error
+	ConvertMock             func(ctx context.Context, logger *slog.Logger, formats PdfFormats, inputPath, outputPath string) error
+	ReadMetadataMock        func(ctx context.Context, logger *slog.Logger, inputPath string) (map[string]any, error)
+	PageCountMock           func(ctx context.Context, logger *slog.Logger, inputPath string) (int, error)
+	WriteMetadataMock       func(ctx context.Context, logger *slog.Logger, metadata map[string]any, inputPath string) error
+	ReadBookmarksMock       func(ctx context.Context, logger *slog.Logger, inputPath string) ([]Bookmark, error)
+	EncryptMock             func(ctx context.Context, logger *slog.Logger, inputPath string, opts EncryptOptions) error
+	EmbedFilesMock          func(ctx context.Context, logger *slog.Logger, filePaths []string, inputPath string) error
+	EmbedFilesMetadataMock  func(ctx context.Context, logger *slog.Logger, metadata map[string]map[string]string, inputPath string) error
+	WriteBookmarksMock      func(ctx context.Context, logger *slog.Logger, inputPath string, bookmarks []Bookmark) error
+	WatermarkMock           func(ctx context.Context, logger *slog.Logger, inputPath string, stamp Stamp) error
+	StampMock               func(ctx context.Context, logger *slog.Logger, inputPath string, stamp Stamp) error
+	RotateMock              func(ctx context.Context, logger *slog.Logger, inputPath string, angle int, pages string) error
+	InjectFacturXXMPMock    func(ctx context.Context, logger *slog.Logger, facturX FacturX, inputPath string) error
+	ReadPdfAConformanceMock func(ctx context.Context, logger *slog.Logger, inputPath string) (string, string, error)
 }
 
-func (engine *PdfEngineMock) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+func (engine *PdfEngineMock) Merge(ctx context.Context, logger *slog.Logger, inputPaths []string, outputPath string) error {
 	return engine.MergeMock(ctx, logger, inputPaths, outputPath)
 }
 
-func (engine *PdfEngineMock) Split(ctx context.Context, logger *zap.Logger, mode SplitMode, inputPath, outputDirPath string) ([]string, error) {
+func (engine *PdfEngineMock) Split(ctx context.Context, logger *slog.Logger, mode SplitMode, inputPath, outputDirPath string) ([]string, error) {
 	return engine.SplitMock(ctx, logger, mode, inputPath, outputDirPath)
 }
 
-func (engine *PdfEngineMock) Flatten(ctx context.Context, logger *zap.Logger, inputPath string) error {
+func (engine *PdfEngineMock) Flatten(ctx context.Context, logger *slog.Logger, inputPath string) error {
 	return engine.FlattenMock(ctx, logger, inputPath)
 }
 
-func (engine *PdfEngineMock) Convert(ctx context.Context, logger *zap.Logger, formats PdfFormats, inputPath, outputPath string) error {
+func (engine *PdfEngineMock) Convert(ctx context.Context, logger *slog.Logger, formats PdfFormats, inputPath, outputPath string) error {
 	return engine.ConvertMock(ctx, logger, formats, inputPath, outputPath)
 }
 
-func (engine *PdfEngineMock) ReadMetadata(ctx context.Context, logger *zap.Logger, inputPath string) (map[string]any, error) {
+func (engine *PdfEngineMock) ReadMetadata(ctx context.Context, logger *slog.Logger, inputPath string) (map[string]any, error) {
 	return engine.ReadMetadataMock(ctx, logger, inputPath)
 }
 
-func (engine *PdfEngineMock) WriteMetadata(ctx context.Context, logger *zap.Logger, metadata map[string]any, inputPath string) error {
+func (engine *PdfEngineMock) PageCount(ctx context.Context, logger *slog.Logger, inputPath string) (int, error) {
+	return engine.PageCountMock(ctx, logger, inputPath)
+}
+
+func (engine *PdfEngineMock) WriteMetadata(ctx context.Context, logger *slog.Logger, metadata map[string]any, inputPath string) error {
 	return engine.WriteMetadataMock(ctx, logger, metadata, inputPath)
 }
 
-func (engine *PdfEngineMock) Encrypt(ctx context.Context, logger *zap.Logger, inputPath, userPassword, ownerPassword string) error {
-	return engine.EncryptMock(ctx, logger, inputPath, userPassword, ownerPassword)
+func (engine *PdfEngineMock) ReadBookmarks(ctx context.Context, logger *slog.Logger, inputPath string) ([]Bookmark, error) {
+	return engine.ReadBookmarksMock(ctx, logger, inputPath)
 }
 
-func (engine *PdfEngineMock) EmbedFiles(ctx context.Context, logger *zap.Logger, filePaths []string, inputPath string) error {
+func (engine *PdfEngineMock) Encrypt(ctx context.Context, logger *slog.Logger, inputPath string, opts EncryptOptions) error {
+	return engine.EncryptMock(ctx, logger, inputPath, opts)
+}
+
+func (engine *PdfEngineMock) EmbedFiles(ctx context.Context, logger *slog.Logger, filePaths []string, inputPath string) error {
 	return engine.EmbedFilesMock(ctx, logger, filePaths, inputPath)
 }
 
+func (engine *PdfEngineMock) EmbedFilesMetadata(ctx context.Context, logger *slog.Logger, metadata map[string]map[string]string, inputPath string) error {
+	return engine.EmbedFilesMetadataMock(ctx, logger, metadata, inputPath)
+}
+
+func (engine *PdfEngineMock) WriteBookmarks(ctx context.Context, logger *slog.Logger, inputPath string, bookmarks []Bookmark) error {
+	return engine.WriteBookmarksMock(ctx, logger, inputPath, bookmarks)
+}
+
+func (engine *PdfEngineMock) Watermark(ctx context.Context, logger *slog.Logger, inputPath string, stamp Stamp) error {
+	return engine.WatermarkMock(ctx, logger, inputPath, stamp)
+}
+
+func (engine *PdfEngineMock) Stamp(ctx context.Context, logger *slog.Logger, inputPath string, stamp Stamp) error {
+	return engine.StampMock(ctx, logger, inputPath, stamp)
+}
+
+func (engine *PdfEngineMock) Rotate(ctx context.Context, logger *slog.Logger, inputPath string, angle int, pages string) error {
+	return engine.RotateMock(ctx, logger, inputPath, angle, pages)
+}
+
+func (engine *PdfEngineMock) InjectFacturXXMP(ctx context.Context, logger *slog.Logger, facturX FacturX, inputPath string) error {
+	return engine.InjectFacturXXMPMock(ctx, logger, facturX, inputPath)
+}
+
+func (engine *PdfEngineMock) ReadPdfAConformance(ctx context.Context, logger *slog.Logger, inputPath string) (string, string, error) {
+	return engine.ReadPdfAConformanceMock(ctx, logger, inputPath)
+}
+
 // PdfEngineProviderMock is a mock for the [PdfEngineProvider] interface.
 type PdfEngineProviderMock struct {
 	PdfEngineMock func() (PdfEngine, error)
@@ -99,31 +143,33 @@ func (provider *PdfEngineProviderMock) PdfEngine() (PdfEngine, error) {
 
 // ProcessMock is a mock for the [Process] interface.
 type ProcessMock struct {
-	StartMock   func(logger *zap.Logger) error
-	StopMock    func(logger *zap.Logger) error
-	HealthyMock func(logger *zap.Logger) bool
+	StartMock   func(logger *slog.Logger) error
+	StopMock    func(logger *slog.Logger) error
+	HealthyMock func(logger *slog.Logger) bool
 }
 
-func (p *ProcessMock) Start(logger *zap.Logger) error {
+func (p *ProcessMock) Start(logger *slog.Logger) error {
 	return p.StartMock(logger)
 }
 
-func (p *ProcessMock) Stop(logger *zap.Logger) error {
+func (p *ProcessMock) Stop(logger *slog.Logger) error {
 	return p.StopMock(logger)
 }
 
-func (p *ProcessMock) Healthy(logger *zap.Logger) bool {
+func (p *ProcessMock) Healthy(logger *slog.Logger) bool {
 	return p.HealthyMock(logger)
 }
 
 // ProcessSupervisorMock is a mock for the [ProcessSupervisor] interface.
 type ProcessSupervisorMock struct {
-	LaunchMock        func() error
-	ShutdownMock      func() error
-	HealthyMock       func() bool
-	RunMock           func(ctx context.Context, logger *zap.Logger, task func() error) error
-	ReqQueueSizeMock  func() int64
-	RestartsCountMock func() int64
+	LaunchMock                  func() error
+	ShutdownMock                func() error
+	HealthyMock                 func() bool
+	RunMock                     func(ctx context.Context, logger *slog.Logger, task func() error) error
+	ReqQueueSizeMock            func() int64
+	RestartsCountMock           func() int64
+	ActiveTasksCountMock        func() int64
+	ConversionsSinceRestartMock func() int64
 }
 
 func (s *ProcessSupervisorMock) Launch() error {
@@ -138,7 +184,7 @@ func (s *ProcessSupervisorMock) Healthy() bool {
 	return s.HealthyMock()
 }
 
-func (s *ProcessSupervisorMock) Run(ctx context.Context, logger *zap.Logger, task func() error) error {
+func (s *ProcessSupervisorMock) Run(ctx context.Context, logger *slog.Logger, task func() error) error {
 	return s.RunMock(ctx, logger, task)
 }
 
@@ -150,13 +196,12 @@ func (s *ProcessSupervisorMock) RestartsCount() int64 {
 	return s.RestartsCountMock()
 }
 
-// LoggerProviderMock is a mock for the [LoggerProvider] interface.
-type LoggerProviderMock struct {
-	LoggerMock func(mod Module) (*zap.Logger, error)
+func (s *ProcessSupervisorMock) ActiveTasksCount() int64 {
+	return s.ActiveTasksCountMock()
 }
 
-func (provider *LoggerProviderMock) Logger(mod Module) (*zap.Logger, error) {
-	return provider.LoggerMock(mod)
+func (s *ProcessSupervisorMock) ConversionsSinceRestart() int64 {
+	return s.ConversionsSinceRestartMock()
 }
 
 // MetricsProviderMock is a mock for the [MetricsProvider] interface.
@@ -194,7 +239,6 @@ var (
 	_ PdfEngineProvider = (*PdfEngineProviderMock)(nil)
 	_ Process           = (*ProcessMock)(nil)
 	_ ProcessSupervisor = (*ProcessSupervisorMock)(nil)
-	_ LoggerProvider    = (*LoggerProviderMock)(nil)
 	_ MetricsProvider   = (*MetricsProviderMock)(nil)
 	_ MkdirAll          = (*MkdirAllMock)(nil)
 	_ PathRename        = (*PathRenameMock)(nil)

pkg/gotenberg/outbound.go

@@ -0,0 +1,676 @@
+package gotenberg
+
+import (
+	"bufio"
+	"context"
+	"crypto/tls"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"net/netip"
+	"net/url"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/dlclark/regexp2"
+	"golang.org/x/net/http/httpproxy"
+)
+
+// ErrNonPublicIP indicates that an outbound URL targets an IP address that
+// is not reachable on the public internet. This covers loopback, RFC1918
+// private, link-local, unspecified, multicast, and IPv6 unique-local
+// (fc00::/7) addresses, as well as their IPv4-mapped IPv6 wrappers (for
+// example [::ffff:127.0.0.1]).
+var ErrNonPublicIP = errors.New("non-public IP")
+
+// ErrPublicIP indicates that an outbound URL targets an IP address that is
+// reachable on the public internet. It is returned when a caller opts
+// into denying public destinations via [WithDenyPublicIPs]; typical use
+// cases are air-gapped or data-governed deployments where Gotenberg must
+// only talk to hosts on a private network.
+var ErrPublicIP = errors.New("public IP")
+
+// netipResolver is the subset of [net.Resolver] used by [resolveHost].
+// Defining it as an interface allows tests to substitute a stub resolver.
+type netipResolver interface {
+	LookupNetIP(ctx context.Context, network, host string) ([]netip.Addr, error)
+}
+
+// outboundResolver is the resolver used by [resolveHost]. It is a
+// package-level variable so that tests can substitute a stub resolver.
+var outboundResolver netipResolver = net.DefaultResolver
+
+// outboundDialer is the underlying dialer used by [secureDialContext]. It is
+// a package-level variable so that tests can replace it.
+var outboundDialer = &net.Dialer{
+	Timeout:   30 * time.Second,
+	KeepAlive: 30 * time.Second,
+}
+
+// nonPublicIPv6Prefixes lists IPv6 ranges that the standard library does
+// not classify via [netip.Addr] helpers but that must not be considered
+// public:
+//
+//   - 2002::/16    6to4 (RFC 3056, deprecated by RFC 7526). Bits 16-47
+//     embed an IPv4 destination, including private ones.
+//   - 2001::/32    Teredo (RFC 4380). Bits 96-127 embed an IPv4
+//     destination, including private ones.
+//   - 64:ff9b::/96 NAT64 well-known prefix (RFC 6052). Low 32 bits
+//     embed an IPv4 destination translated by a NAT64 gateway.
+//   - 64:ff9b:1::/48 NAT64 local-use prefix (RFC 8215). Same risk.
+//   - fec0::/10    Deprecated site-local (RFC 3879). Not covered by
+//     [netip.Addr.IsPrivate] which only handles fc00::/7.
+//   - ::/96        IPv4-compatible IPv6 (deprecated). Embeds an IPv4
+//     destination and is not handled by [netip.Addr.Unmap].
+//   - 2001:db8::/32 Documentation range (RFC 3849). Never routable.
+//   - 100::/64     Discard prefix (RFC 6666).
+var nonPublicIPv6Prefixes = []netip.Prefix{
+	netip.MustParsePrefix("2002::/16"),
+	netip.MustParsePrefix("2001::/32"),
+	netip.MustParsePrefix("64:ff9b::/96"),
+	netip.MustParsePrefix("64:ff9b:1::/48"),
+	netip.MustParsePrefix("fec0::/10"),
+	netip.MustParsePrefix("::/96"),
+	netip.MustParsePrefix("2001:db8::/32"),
+	netip.MustParsePrefix("100::/64"),
+}
+
+// IsPublicIP reports whether addr is reachable on the public internet. It
+// returns false for loopback, private (RFC1918), link-local, unspecified,
+// multicast, and unique-local addresses. IPv4-mapped IPv6 addresses are
+// unmapped before evaluation so that [::ffff:127.0.0.1] is correctly
+// identified as loopback.
+//
+// IPv6 prefixes that tunnel or translate to an embedded IPv4 destination
+// (6to4, Teredo, NAT64) are rejected wholesale rather than recursed into,
+// because a host that routes them implicitly trusts the IPv4 mapping and
+// the prefixes themselves are deprecated or translation-only. See
+// [nonPublicIPv6Prefixes] for the full list and rationale.
+func IsPublicIP(addr netip.Addr) bool {
+	if !addr.IsValid() {
+		return false
+	}
+	addr = addr.Unmap()
+	switch {
+	case addr.IsLoopback(),
+		addr.IsPrivate(),
+		addr.IsLinkLocalUnicast(),
+		addr.IsLinkLocalMulticast(),
+		addr.IsMulticast(),
+		addr.IsUnspecified(),
+		addr.IsInterfaceLocalMulticast():
+		return false
+	}
+	if addr.Is6() {
+		for _, p := range nonPublicIPv6Prefixes {
+			if p.Contains(addr) {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+// ResolveAndCheckPublic resolves host and rejects any resolved address
+// that fails [IsPublicIP] with [ErrNonPublicIP]. It is the strict
+// equivalent of [DecideOutbound] with [WithDenyPrivateIPs] true for a
+// bare host. Callers that need a different policy should use
+// [DecideOutbound] directly.
+func ResolveAndCheckPublic(ctx context.Context, host string) ([]netip.Addr, error) {
+	return resolveHost(ctx, host, true, false)
+}
+
+// resolveHost resolves host and returns the addresses. When denyPrivate
+// is true, a non-public address is rejected with [ErrNonPublicIP]. When
+// denyPublic is true, a public address is rejected with [ErrPublicIP].
+// Both checks may be active at the same time, in which case any
+// resolved address fails and the caller must rely on an allow-list
+// bypass.
+func resolveHost(ctx context.Context, host string, denyPrivate, denyPublic bool) ([]netip.Addr, error) {
+	if host == "" {
+		return nil, errors.New("empty host")
+	}
+
+	check := func(a netip.Addr) error {
+		public := IsPublicIP(a)
+		if denyPublic && public {
+			return fmt.Errorf("%q: %w", a, ErrPublicIP)
+		}
+		if denyPrivate && !public {
+			return fmt.Errorf("%q: %w", a, ErrNonPublicIP)
+		}
+		return nil
+	}
+
+	if addr, err := netip.ParseAddr(host); err == nil {
+		if err := check(addr); err != nil {
+			return nil, err
+		}
+		return []netip.Addr{addr}, nil
+	}
+	addrs, err := outboundResolver.LookupNetIP(ctx, "ip", host)
+	if err != nil {
+		return nil, fmt.Errorf("resolve %q: %w", host, err)
+	}
+	if len(addrs) == 0 {
+		return nil, fmt.Errorf("resolve %q: no addresses returned", host)
+	}
+	for _, a := range addrs {
+		if err := check(a); err != nil {
+			return nil, fmt.Errorf("%q resolves to rejected address %w", host, err)
+		}
+	}
+	return addrs, nil
+}
+
+// OutboundDecision is the result of validating an outbound URL via
+// [DecideOutbound]. Callers use it to dial the destination either directly
+// (operator-approved allow-list match, Bypass true) or via [DialPinned] so
+// that the connect targets the IPs resolved at validation time. Passing
+// the decision to the dialer closes the window between validation and
+// connect that DNS rebinding exploits.
+type OutboundDecision struct {
+	// Bypass is true when an allow-list pattern matched the URL. The
+	// operator has explicitly opted into the destination; the caller
+	// should dial directly without an additional IP check.
+	Bypass bool
+
+	// Pinned holds the IPs resolved for the URL host. The caller should
+	// dial one of these via [DialPinned] to prevent DNS rebinding between
+	// validation and connect.
+	Pinned []netip.Addr
+}
+
+// outboundDecisionKey is the context key under which an [OutboundDecision]
+// is stored.
+type outboundDecisionKey struct{}
+
+// outboundProxiedKey is the context key under which [outboundRoundTripper]
+// records that the environment proxy will carry this request, so that the
+// dialer knows the address it receives is the proxy's rather than the
+// destination's.
+type outboundProxiedKey struct{}
+
+// decideConfig carries optional settings for [DecideOutbound] and
+// [FilterOutboundURL]. See [DecideOption] for how callers configure it.
+type decideConfig struct {
+	denyPrivateIPs bool
+	denyPublicIPs  bool
+}
+
+// DecideOption customizes how [DecideOutbound] and [FilterOutboundURL]
+// validate a URL. Options are applied in order on top of the permissive
+// defaults (no IP-class rejection).
+type DecideOption func(*decideConfig)
+
+// WithDenyPrivateIPs rejects URLs whose host resolves to a non-public IP
+// address (loopback, RFC1918, link-local, unique-local, multicast,
+// unspecified). DNS still runs and the returned [OutboundDecision] still
+// carries the resolved IPs for dial pinning, so enabling or disabling
+// this option does not affect DNS-rebinding protection. Use it on
+// internet-exposed deployments to mitigate SSRF against internal
+// services.
+func WithDenyPrivateIPs(deny bool) DecideOption {
+	return func(c *decideConfig) { c.denyPrivateIPs = deny }
+}
+
+// WithDenyPublicIPs rejects URLs whose host resolves to a public IP
+// address. Use it on air-gapped or data-governed deployments where
+// Gotenberg must only reach hosts on a private network; the option
+// prevents data exfiltration to attacker-controlled public servers via
+// webhook callbacks, downloadFrom URLs, or user-supplied stamp sources.
+// May be combined with [WithDenyPrivateIPs]; in that case every resolved
+// address fails and only an allow-list bypass permits a destination.
+func WithDenyPublicIPs(deny bool) DecideOption {
+	return func(c *decideConfig) { c.denyPublicIPs = deny }
+}
+
+// httpLikeScheme reports whether scheme is one of http, https, ws, or wss.
+// Only these schemes go through the IP-based address check; data, blob,
+// file, and other schemes are filtered by the regex layer alone.
+func httpLikeScheme(scheme string) bool {
+	switch scheme {
+	case "http", "https", "ws", "wss":
+		return true
+	}
+	return false
+}
+
+// DecideOutbound parses rawURL, runs the regex allow/deny lists against
+// the normalized form, and (when no allow-list match) resolves the host
+// and applies the IP-class checks selected by opts. It returns the
+// resulting [OutboundDecision] so the caller can pin the dial to the IPs
+// that were resolved here and skip a second DNS lookup later, which
+// closes the DNS rebinding window that affects callers that only receive
+// an error from [FilterOutboundURL].
+//
+// The semantics:
+//
+//  1. The URL is parsed and its scheme and host lowercased.
+//  2. allowList and denyList apply against the normalized form with OR
+//     semantics. The deny-list always applies.
+//  3. For http, https, ws, and wss, the host is resolved and every
+//     resolved address must satisfy the enabled IP-class checks
+//     ([WithDenyPrivateIPs], [WithDenyPublicIPs]). An allow-list match
+//     bypasses the IP-class checks and the returned decision carries
+//     Bypass true. Otherwise the decision carries Pinned with the
+//     resolved addresses.
+//
+// Callers that dial the destination themselves must honor Bypass and
+// Pinned: bypassed URLs dial the hostname directly (operator opt-in);
+// pinned URLs must dial one of Pinned via [DialPinned].
+func DecideOutbound(ctx context.Context, rawURL string, allowList, denyList []*regexp2.Regexp, deadline time.Time, opts ...DecideOption) (OutboundDecision, error) {
+	cfg := decideConfig{}
+	for _, opt := range opts {
+		opt(&cfg)
+	}
+
+	parsed, err := url.Parse(rawURL)
+	if err != nil {
+		return OutboundDecision{}, fmt.Errorf("parse URL %q: %w", rawURL, ErrFiltered)
+	}
+	parsed.Scheme = strings.ToLower(parsed.Scheme)
+	parsed.Host = strings.ToLower(parsed.Host)
+	normalized := parsed.String()
+
+	allowMatched := false
+	if len(allowList) > 0 {
+		for _, pattern := range allowList {
+			clone := regexp2.MustCompile(pattern.String(), 0)
+			clone.MatchTimeout = time.Until(deadline)
+
+			ok, err := clone.MatchString(normalized)
+			if err != nil {
+				if time.Now().After(deadline) {
+					return OutboundDecision{}, context.DeadlineExceeded
+				}
+				return OutboundDecision{}, fmt.Errorf("'%s' cannot handle '%s': %w", clone.String(), normalized, err)
+			}
+
+			if ok {
+				allowMatched = true
+				break
+			}
+		}
+
+		if !allowMatched {
+			return OutboundDecision{}, fmt.Errorf("'%s' does not match any expression from the allowed list: %w", normalized, ErrFiltered)
+		}
+	}
+
+	for _, pattern := range denyList {
+		clone := regexp2.MustCompile(pattern.String(), 0)
+		clone.MatchTimeout = time.Until(deadline)
+
+		ok, err := clone.MatchString(normalized)
+		if err != nil {
+			if time.Now().After(deadline) {
+				return OutboundDecision{}, context.DeadlineExceeded
+			}
+			return OutboundDecision{}, fmt.Errorf("'%s' cannot handle '%s': %w", clone.String(), normalized, err)
+		}
+
+		if ok {
+			return OutboundDecision{}, fmt.Errorf("'%s' matches the expression from the denied list: %w", normalized, ErrFiltered)
+		}
+	}
+
+	if allowMatched {
+		return OutboundDecision{Bypass: true}, nil
+	}
+
+	if !httpLikeScheme(parsed.Scheme) {
+		return OutboundDecision{}, nil
+	}
+
+	host := parsed.Hostname()
+	if host == "" {
+		return OutboundDecision{}, fmt.Errorf("URL %q has no host: %w", rawURL, ErrFiltered)
+	}
+
+	addrs, err := resolveHost(ctx, host, cfg.denyPrivateIPs, cfg.denyPublicIPs)
+	if err != nil {
+		switch {
+		case errors.Is(err, ErrNonPublicIP):
+			return OutboundDecision{}, fmt.Errorf("'%s' targets a non-public address: %w", normalized, ErrFiltered)
+		case errors.Is(err, ErrPublicIP):
+			return OutboundDecision{}, fmt.Errorf("'%s' targets a public address: %w", normalized, ErrFiltered)
+		default:
+			return OutboundDecision{}, fmt.Errorf("validate '%s' host: %w", normalized, err)
+		}
+	}
+
+	return OutboundDecision{Pinned: addrs}, nil
+}
+
+// FilterOutboundURL validates that rawURL is acceptable for an outbound
+// request from Gotenberg. It is the URL-aware replacement for
+// [FilterDeadline] and should be preferred for any new code that filters
+// a URL before issuing or instructing an outbound request.
+//
+// The default behavior is permissive: the URL passes as long as it clears
+// the regex allow-list and deny-list. Callers that need IP-class checks
+// opt in via [WithDenyPrivateIPs] or [WithDenyPublicIPs]. The deny-list
+// always applies and cannot be bypassed by an allow-list match.
+func FilterOutboundURL(ctx context.Context, rawURL string, allowList, denyList []*regexp2.Regexp, deadline time.Time, opts ...DecideOption) error {
+	_, err := DecideOutbound(ctx, rawURL, allowList, denyList, deadline, opts...)
+	return err
+}
+
+// outboundRoundTripper is an [http.RoundTripper] that validates each
+// request URL via [DecideOutbound] and stashes the resulting
+// [OutboundDecision] in the request context so that [secureDialContext]
+// can pin the dial or bypass the IP check as appropriate. Because the
+// http.Client invokes RoundTrip again for each redirect hop, this also
+// re-validates redirect targets without a separate CheckRedirect.
+type outboundRoundTripper struct {
+	base      http.RoundTripper
+	allowList []*regexp2.Regexp
+	denyList  []*regexp2.Regexp
+	opts      []DecideOption
+
+	// proxyFunc mirrors the transport's own proxy resolution. It is nil unless
+	// the environment proxy is enabled.
+	proxyFunc func(*url.URL) (*url.URL, error)
+}
+
+// RoundTrip validates req.URL and delegates to the base transport.
+func (rt *outboundRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	deadline, ok := req.Context().Deadline()
+	if !ok {
+		deadline = time.Now().Add(30 * time.Second)
+	}
+
+	decision, err := DecideOutbound(req.Context(), req.URL.String(), rt.allowList, rt.denyList, deadline, rt.opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	ctx := context.WithValue(req.Context(), outboundDecisionKey{}, decision)
+
+	// A request the proxy will not carry is dialed directly, so it still gets
+	// pinned. Without this, enabling the environment proxy would silently drop
+	// DNS-rebinding protection for every NO_PROXY host, and for all traffic
+	// when no proxy variable is set at all.
+	if rt.proxyFunc != nil {
+		proxyURL, proxyErr := rt.proxyFunc(req.URL)
+		if proxyErr == nil && proxyURL != nil {
+			ctx = context.WithValue(ctx, outboundProxiedKey{}, true)
+		}
+	}
+
+	return rt.base.RoundTrip(req.WithContext(ctx))
+}
+
+// NewOutboundHttpClient returns an [http.Client] that validates every
+// outbound request URL via the same logic as [FilterOutboundURL] and
+// pins the resulting dial to the resolved IPs.
+//
+// The client re-validates redirect targets automatically because the
+// underlying [http.Client] invokes the wrapping [http.RoundTripper] once
+// per hop. This closes the redirect-based SSRF bypass that affects raw
+// [http.Client] usage when no CheckRedirect is set.
+//
+// The default posture is permissive; callers pass [WithDenyPrivateIPs]
+// or [WithDenyPublicIPs] to opt into IP-class rejection.
+//
+// When enableEnvironmentProxy is true, the client routes through the proxy
+// defined by the standard HTTP_PROXY, HTTPS_PROXY, and NO_PROXY variables,
+// including any credentials embedded in those URLs. Dial pinning does not apply
+// to a hop the proxy carries, since the proxy owns DNS and egress there; a hop
+// the proxy declines, such as a NO_PROXY host, is dialed directly and stays
+// pinned. The URL allow/deny and IP-class validation runs either way. Callers
+// gate this behind their module's opt-in flag. See
+// https://github.com/gotenberg/gotenberg/issues/1592.
+func NewOutboundHttpClient(timeout time.Duration, allowList, denyList []*regexp2.Regexp, enableEnvironmentProxy bool, opts ...DecideOption) *http.Client {
+	base := http.DefaultTransport.(*http.Transport).Clone()
+
+	var proxyFunc func(*url.URL) (*url.URL, error)
+
+	if enableEnvironmentProxy {
+		// Route through the operator's proxy (standard env vars, credentials
+		// included). httpproxy.FromEnvironment reads the environment now rather
+		// than caching it process-wide like http.ProxyFromEnvironment.
+		proxyFunc = httpproxy.FromEnvironment().ProxyFunc()
+		base.Proxy = func(req *http.Request) (*url.URL, error) {
+			return proxyFunc(req.URL)
+		}
+		// Only a hop the proxy actually carries skips pinning: there the dial
+		// targets the proxy, not the destination, and the proxy owns DNS. A hop
+		// the proxy declines is dialed directly and stays pinned.
+		base.DialContext = func(ctx context.Context, network, addr string) (net.Conn, error) {
+			if proxied, _ := ctx.Value(outboundProxiedKey{}).(bool); proxied {
+				return outboundDialer.DialContext(ctx, network, addr)
+			}
+			return secureDialContext(ctx, network, addr)
+		}
+	} else {
+		// Default: ignore any proxy environment variables and pin the dial to
+		// the IPs resolved during validation, closing the DNS-rebinding
+		// window. Clearing Proxy is deliberate: the cloned default transport
+		// carries http.ProxyFromEnvironment, which combined with the pinned
+		// dialer would connect to the destination IP on the proxy's port.
+		base.Proxy = nil
+		base.DialContext = secureDialContext
+	}
+
+	return &http.Client{
+		Timeout: timeout,
+		Transport: &outboundRoundTripper{
+			base:      base,
+			allowList: allowList,
+			denyList:  denyList,
+			opts:      opts,
+			proxyFunc: proxyFunc,
+		},
+	}
+}
+
+// environmentProxyVariables are the variables golang.org/x/net/http/httpproxy
+// reads, in the casing precedence it applies.
+var environmentProxyVariables = []string{
+	"HTTP_PROXY", "http_proxy",
+	"HTTPS_PROXY", "https_proxy",
+	"ALL_PROXY", "all_proxy",
+}
+
+// ValidateEnvironmentProxyVariables checks that every proxy variable currently
+// set can be parsed as a proxy URL.
+//
+// httpproxy discards a parse error and falls back to a direct connection, so an
+// operator who mistypes a proxy URL would silently lose the egress path they
+// meant to enforce. Modules exposing an environment proxy flag call this from
+// their Validate so that startup fails loudly instead.
+//
+// Values are never included in the error: a proxy URL may carry credentials.
+func ValidateEnvironmentProxyVariables() error {
+	var err error
+
+	for _, name := range environmentProxyVariables {
+		if os.Getenv(name) == "" {
+			continue
+		}
+
+		if !isUsableProxyURL(os.Getenv(name)) {
+			err = errors.Join(err, fmt.Errorf("environment variable %s is not a usable proxy URL; unset it, or set it to a value like 'http://user:password@host:3128'", name))
+		}
+	}
+
+	return err
+}
+
+// isUsableProxyURL mirrors httpproxy's own parsing: a URL with a proxy scheme,
+// or anything that becomes one once a scheme is prefixed.
+func isUsableProxyURL(value string) bool {
+	proxyURL, err := url.Parse(value)
+	if err == nil {
+		switch proxyURL.Scheme {
+		case "http", "https", "socks5", "socks5h":
+			return true
+		}
+	}
+
+	// httpproxy retries bare values such as "host:3128" with a scheme.
+	_, err = url.Parse("http://" + value)
+	return err == nil
+}
+
+// secureDialContext consumes the [OutboundDecision] stashed in ctx by
+// [outboundRoundTripper]. When the decision is to bypass (allow-list
+// match), it dials directly. When the decision contains pinned IPs, it
+// dials each in turn until one connects. When no decision is present
+// (the dialer was used outside of [outboundRoundTripper]), it falls back
+// to resolving the destination without IP-class checks so that the
+// fallback matches the permissive default and operators who need
+// restrictions configure them at the caller.
+func secureDialContext(ctx context.Context, network, addr string) (net.Conn, error) {
+	host, port, err := net.SplitHostPort(addr)
+	if err != nil {
+		return nil, fmt.Errorf("split host:port %q: %w", addr, err)
+	}
+
+	if decision, ok := ctx.Value(outboundDecisionKey{}).(OutboundDecision); ok {
+		if decision.Bypass {
+			return outboundDialer.DialContext(ctx, network, addr)
+		}
+		if len(decision.Pinned) > 0 {
+			return DialPinned(ctx, network, decision.Pinned, port)
+		}
+	}
+
+	addrs, err := resolveHost(ctx, host, false, false)
+	if err != nil {
+		return nil, err
+	}
+	return DialPinned(ctx, network, addrs, port)
+}
+
+// DialPinned dials each addr in turn until one connects, returning the
+// first successful connection or the last error. Callers pass the Pinned
+// slice from [OutboundDecision] so that the dial targets exactly the IPs
+// that [DecideOutbound] resolved, preventing DNS rebinding between
+// validation and connect.
+func DialPinned(ctx context.Context, network string, addrs []netip.Addr, port string) (net.Conn, error) {
+	var lastErr error
+	for _, a := range addrs {
+		conn, err := outboundDialer.DialContext(ctx, network, net.JoinHostPort(a.String(), port))
+		if err == nil {
+			return conn, nil
+		}
+		lastErr = err
+	}
+	if lastErr == nil {
+		return nil, errors.New("no addresses to dial")
+	}
+	return nil, lastErr
+}
+
+// DialThroughProxy opens a TCP tunnel to target (a host:port) through the
+// HTTP CONNECT proxy at proxyURL, authenticating with any credentials
+// embedded in proxyURL. dialProxy dials the proxy's own address; callers pass
+// a plain dialer. Chromium and soffice cannot authenticate to a proxy
+// themselves, so Gotenberg performs the CONNECT handshake on their behalf.
+// The returned connection carries the raw tunnel for the caller to splice
+// with the client. See https://github.com/gotenberg/gotenberg/issues/1592.
+func DialThroughProxy(ctx context.Context, proxyURL *url.URL, target string, dialProxy func(ctx context.Context, network, addr string) (net.Conn, error)) (net.Conn, error) {
+	conn, err := dialProxy(ctx, "tcp", proxyHostPort(proxyURL))
+	if err != nil {
+		return nil, fmt.Errorf("dial proxy: %w", err)
+	}
+
+	if proxyURL.Scheme == "https" {
+		tlsConn := tls.Client(conn, &tls.Config{ServerName: proxyURL.Hostname()})
+		err = tlsConn.HandshakeContext(ctx)
+		if err != nil {
+			_ = conn.Close()
+			return nil, fmt.Errorf("TLS handshake with proxy: %w", err)
+		}
+		conn = tlsConn
+	}
+
+	// Bound the CONNECT handshake by the request deadline; cleared once the
+	// tunnel is established so splicing manages its own lifetime.
+	if deadline, ok := ctx.Deadline(); ok {
+		_ = conn.SetDeadline(deadline)
+	}
+
+	connectReq := &http.Request{
+		Method: http.MethodConnect,
+		URL:    &url.URL{Opaque: target},
+		Host:   target,
+		Header: make(http.Header),
+	}
+	if user := proxyURL.User; user != nil {
+		password, _ := user.Password()
+		connectReq.Header.Set("Proxy-Authorization", proxyAuthHeader(user.Username(), password))
+	}
+
+	err = connectReq.Write(conn)
+	if err != nil {
+		_ = conn.Close()
+		return nil, fmt.Errorf("write CONNECT to proxy: %w", err)
+	}
+
+	br := bufio.NewReader(conn)
+	resp, err := http.ReadResponse(br, connectReq)
+	if err != nil {
+		_ = conn.Close()
+		return nil, fmt.Errorf("read CONNECT response from proxy: %w", err)
+	}
+	// A CONNECT response carries no body; discard defensively.
+	_ = resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		_ = conn.Close()
+		return nil, fmt.Errorf("proxy refused CONNECT to %q with status %d", target, resp.StatusCode)
+	}
+
+	_ = conn.SetDeadline(time.Time{})
+
+	// The reader may hold bytes the proxy sent right after the response;
+	// overlay it so those tunnel bytes are not lost when splicing.
+	return &bufferedConn{Conn: conn, r: br}, nil
+}
+
+// proxyHostPort returns proxyURL's host:port, defaulting the port from the
+// scheme when the URL omits it.
+func proxyHostPort(proxyURL *url.URL) string {
+	port := proxyURL.Port()
+	if port == "" {
+		port = "80"
+		if proxyURL.Scheme == "https" {
+			port = "443"
+		}
+	}
+	return net.JoinHostPort(proxyURL.Hostname(), port)
+}
+
+// proxyAuthHeader builds a Basic Proxy-Authorization header value.
+func proxyAuthHeader(username, password string) string {
+	return "Basic " + base64.StdEncoding.EncodeToString([]byte(username+":"+password))
+}
+
+// bufferedConn overlays a [bufio.Reader] on a [net.Conn] so that bytes
+// buffered while reading a proxy's CONNECT response are not lost when the
+// tunnel is spliced.
+type bufferedConn struct {
+	net.Conn
+	r *bufio.Reader
+}
+
+func (c *bufferedConn) Read(b []byte) (int, error) {
+	return c.r.Read(b)
+}
+
+// CloseWrite half-closes the underlying connection. Embedding [net.Conn] hides
+// the method, so a CONNECT splice over this connection could never signal EOF
+// to the upstream and both sides waited for the other until a timeout.
+func (c *bufferedConn) CloseWrite() error {
+	cw, ok := c.Conn.(interface{ CloseWrite() error })
+	if !ok {
+		return fmt.Errorf("underlying %T does not support half-close", c.Conn)
+	}
+	return cw.CloseWrite()
+}

pkg/gotenberg/outbound_envproxy_test.go

@@ -0,0 +1,155 @@
+package gotenberg
+
+import (
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"net/netip"
+	"strings"
+	"testing"
+)
+
+func TestValidateEnvironmentProxyVariables(t *testing.T) {
+	for _, tc := range []struct {
+		name    string
+		env     map[string]string
+		wantErr bool
+		// wantIn is a substring the error must name, so that an operator can
+		// find the offending variable.
+		wantIn string
+	}{
+		{
+			name: "nothing set",
+			env:  map[string]string{},
+		},
+		{
+			name: "well formed URL",
+			env:  map[string]string{"HTTP_PROXY": "http://proxy.example.com:3128"},
+		},
+		{
+			name: "credentials are accepted",
+			env:  map[string]string{"HTTPS_PROXY": "http://user:password@proxy.example.com:3128"},
+		},
+		{
+			name: "bare host and port is accepted, as httpproxy prefixes a scheme",
+			env:  map[string]string{"HTTP_PROXY": "proxy.example.com:3128"},
+		},
+		{
+			name: "socks5 is accepted",
+			env:  map[string]string{"ALL_PROXY": "socks5://proxy.example.com:1080"},
+		},
+		{
+			name: "lowercase variables are checked too",
+			env:  map[string]string{"http_proxy": "http://proxy.example.com:3128"},
+		},
+		{
+			name:    "unparseable URL",
+			env:     map[string]string{"HTTP_PROXY": "http://proxy.example.com:3128/%zz"},
+			wantErr: true,
+			wantIn:  "HTTP_PROXY",
+		},
+		{
+			name:    "the failing variable is named",
+			env:     map[string]string{"HTTPS_PROXY": "://%zz"},
+			wantErr: true,
+			wantIn:  "HTTPS_PROXY",
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			for _, name := range environmentProxyVariables {
+				t.Setenv(name, "")
+			}
+			for name, value := range tc.env {
+				t.Setenv(name, value)
+			}
+
+			err := ValidateEnvironmentProxyVariables()
+			if tc.wantErr && err == nil {
+				t.Fatal("expected an error, got none")
+			}
+			if !tc.wantErr && err != nil {
+				t.Fatalf("unexpected error: %v", err)
+			}
+			if tc.wantIn != "" && !strings.Contains(err.Error(), tc.wantIn) {
+				t.Errorf("error %q does not name %q", err, tc.wantIn)
+			}
+		})
+	}
+}
+
+// TestValidateEnvironmentProxyVariables_DoesNotLeakCredentials pins that a
+// proxy URL, which may embed a password, never reaches the error text.
+func TestValidateEnvironmentProxyVariables_DoesNotLeakCredentials(t *testing.T) {
+	for _, name := range environmentProxyVariables {
+		t.Setenv(name, "")
+	}
+	t.Setenv("HTTP_PROXY", "http://admin:hunter2@proxy.example.com:3128/%zz")
+
+	err := ValidateEnvironmentProxyVariables()
+	if err == nil {
+		t.Fatal("expected an error, got none")
+	}
+	if strings.Contains(err.Error(), "hunter2") {
+		t.Errorf("error leaks the proxy password: %q", err)
+	}
+	if strings.Contains(err.Error(), "admin") {
+		t.Errorf("error leaks the proxy username: %q", err)
+	}
+}
+
+// TestNewOutboundHttpClient_EnvironmentProxyPinsDirectHops is the regression
+// test for the dial-pinning gap: with the environment proxy enabled but no
+// proxy applicable to the request, the dial must still go through the pinning
+// dialer rather than a plain one.
+//
+// The request targets a hostname that only the stub resolver knows, so a plain
+// dial would hand that unresolvable name to the OS and fail. Only a pinned dial,
+// which substitutes the address resolved during validation, can connect.
+// See https://github.com/gotenberg/gotenberg/issues/1592.
+func TestNewOutboundHttpClient_EnvironmentProxyPinsDirectHops(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.WriteHeader(http.StatusNoContent)
+	}))
+	defer srv.Close()
+
+	_, port, err := net.SplitHostPort(strings.TrimPrefix(srv.URL, "http://"))
+	if err != nil {
+		t.Fatalf("split server address: %v", err)
+	}
+
+	const host = "pinned-only.invalid"
+
+	// NO_PROXY covers the destination, so httpproxy declines it and the
+	// transport dials directly. That direct dial is the hop that used to lose
+	// pinning.
+	for _, name := range environmentProxyVariables {
+		t.Setenv(name, "")
+	}
+	t.Setenv("HTTP_PROXY", "http://proxy.invalid:3128")
+	t.Setenv("NO_PROXY", host)
+
+	withStubResolver(t, func(string) ([]netip.Addr, error) {
+		return []netip.Addr{netip.MustParseAddr("127.0.0.1")}, nil
+	})
+
+	client := NewOutboundHttpClient(0, nil, nil, true)
+	rt, ok := client.Transport.(*outboundRoundTripper)
+	if !ok {
+		t.Fatalf("transport is %T, want *outboundRoundTripper", client.Transport)
+	}
+	if rt.proxyFunc == nil {
+		t.Fatal("proxyFunc is nil, want the environment proxy to be resolved per request")
+	}
+
+	resp, err := client.Get("http://" + net.JoinHostPort(host, port))
+	if err != nil {
+		t.Fatalf("GET failed, so the direct hop was not pinned: %v", err)
+	}
+	defer func() {
+		_ = resp.Body.Close()
+	}()
+
+	if resp.StatusCode != http.StatusNoContent {
+		t.Errorf("status = %d, want %d", resp.StatusCode, http.StatusNoContent)
+	}
+}

pkg/gotenberg/outbound_proxy_test.go

@@ -0,0 +1,153 @@
+package gotenberg
+
+import (
+	"bufio"
+	"context"
+	"encoding/base64"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"sync"
+	"testing"
+	"time"
+)
+
+// connectCapture records the CONNECT request a proxy stub received.
+type connectCapture struct {
+	mu     sync.Mutex
+	method string
+	host   string
+	auth   string
+}
+
+func (c *connectCapture) set(method, host, auth string) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	c.method, c.host, c.auth = method, host, auth
+}
+
+func (c *connectCapture) get() (string, string, string) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	return c.method, c.host, c.auth
+}
+
+// startConnectProxyStub starts a raw TCP server that behaves like an HTTP
+// CONNECT proxy: it reads the CONNECT request, records it, replies 200 with a
+// greeting appended to the same write (to exercise buffered-byte handling),
+// then echoes tunnel bytes back to the caller.
+func startConnectProxyStub(t *testing.T, capture *connectCapture) string {
+	t.Helper()
+	l, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	t.Cleanup(func() { _ = l.Close() })
+
+	go func() {
+		conn, err := l.Accept()
+		if err != nil {
+			return
+		}
+		defer func() { _ = conn.Close() }()
+
+		br := bufio.NewReader(conn)
+		req, err := http.ReadRequest(br)
+		if err != nil {
+			return
+		}
+		capture.set(req.Method, req.Host, req.Header.Get("Proxy-Authorization"))
+
+		// The greeting rides along with the response so the client's CONNECT
+		// response parser buffers it; bufferedConn must not drop it.
+		_, _ = conn.Write([]byte("HTTP/1.1 200 Connection established\r\n\r\nTUNNEL-HELLO"))
+		_, _ = io.Copy(conn, br)
+	}()
+
+	return l.Addr().String()
+}
+
+func TestDialThroughProxy(t *testing.T) {
+	capture := &connectCapture{}
+	addr := startConnectProxyStub(t, capture)
+
+	proxyURL := &url.URL{Scheme: "http", Host: addr, User: url.UserPassword("alice", "s3cr3t")}
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	conn, err := DialThroughProxy(ctx, proxyURL, "example.com:443", func(ctx context.Context, network, addr string) (net.Conn, error) {
+		var d net.Dialer
+		return d.DialContext(ctx, network, addr)
+	})
+	if err != nil {
+		t.Fatalf("DialThroughProxy: %v", err)
+	}
+	defer func() { _ = conn.Close() }()
+
+	// The greeting buffered while reading the CONNECT response must survive.
+	greeting := make([]byte, len("TUNNEL-HELLO"))
+	_, err = io.ReadFull(conn, greeting)
+	if err != nil {
+		t.Fatalf("read greeting: %v", err)
+	}
+	if string(greeting) != "TUNNEL-HELLO" {
+		t.Fatalf("greeting = %q, want TUNNEL-HELLO", greeting)
+	}
+
+	// The tunnel must round-trip bytes.
+	_, err = conn.Write([]byte("ping"))
+	if err != nil {
+		t.Fatalf("write to tunnel: %v", err)
+	}
+	echo := make([]byte, 4)
+	_, err = io.ReadFull(conn, echo)
+	if err != nil {
+		t.Fatalf("read echo: %v", err)
+	}
+	if string(echo) != "ping" {
+		t.Fatalf("echo = %q, want ping", echo)
+	}
+
+	method, host, auth := capture.get()
+	if method != http.MethodConnect {
+		t.Fatalf("proxy saw method %q, want CONNECT", method)
+	}
+	if host != "example.com:443" {
+		t.Fatalf("proxy saw target %q, want example.com:443", host)
+	}
+	wantAuth := "Basic " + base64.StdEncoding.EncodeToString([]byte("alice:s3cr3t"))
+	if auth != wantAuth {
+		t.Fatalf("proxy saw Proxy-Authorization %q, want %q", auth, wantAuth)
+	}
+}
+
+func TestDialThroughProxy_RefusedStatus(t *testing.T) {
+	l, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	t.Cleanup(func() { _ = l.Close() })
+
+	go func() {
+		conn, err := l.Accept()
+		if err != nil {
+			return
+		}
+		defer func() { _ = conn.Close() }()
+		br := bufio.NewReader(conn)
+		_, _ = http.ReadRequest(br)
+		_, _ = conn.Write([]byte("HTTP/1.1 407 Proxy Authentication Required\r\n\r\n"))
+	}()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	_, err = DialThroughProxy(ctx, &url.URL{Scheme: "http", Host: l.Addr().String()}, "example.com:443", func(ctx context.Context, network, addr string) (net.Conn, error) {
+		var d net.Dialer
+		return d.DialContext(ctx, network, addr)
+	})
+	if err == nil {
+		t.Fatal("expected an error when the proxy refuses CONNECT, got nil")
+	}
+}

pkg/gotenberg/outbound_test.go

@@ -0,0 +1,489 @@
+package gotenberg
+
+import (
+	"context"
+	"errors"
+	"net/netip"
+	"testing"
+	"time"
+
+	"github.com/dlclark/regexp2"
+)
+
+func TestIsPublicIP(t *testing.T) {
+	for _, tc := range []struct {
+		addr   string
+		public bool
+	}{
+		// Public.
+		{"1.1.1.1", true},
+		{"8.8.8.8", true},
+		{"2606:4700:4700::1111", true},
+
+		// Loopback.
+		{"127.0.0.1", false},
+		{"127.255.255.254", false},
+		{"::1", false},
+
+		// IPv4-mapped IPv6 (Issue 2).
+		{"::ffff:127.0.0.1", false},
+		{"::ffff:10.0.0.1", false},
+		{"::ffff:169.254.169.254", false},
+
+		// RFC1918.
+		{"10.0.0.1", false},
+		{"172.16.0.1", false},
+		{"172.31.255.254", false},
+		{"192.168.1.1", false},
+
+		// Link-local.
+		{"169.254.169.254", false},
+		{"fe80::1", false},
+
+		// Unique-local.
+		{"fc00::1", false},
+		{"fd12:3456:789a::1", false},
+
+		// Unspecified.
+		{"0.0.0.0", false},
+		{"::", false},
+
+		// Multicast.
+		{"224.0.0.1", false},
+		{"ff02::1", false},
+
+		// 6to4 wrapping internal/private IPv4 (RFC 3056, deprecated by
+		// RFC 7526). a9fe:a9fe = 169.254.169.254 (cloud metadata).
+		{"2002:a9fe:a9fe::", false},
+		{"2002:0a00:0001::", false},
+		{"2002:c0a8:0101::", false},
+
+		// 6to4 wrapping a public IPv4 (8.8.8.8) is rejected wholesale.
+		{"2002:0808:0808::", false},
+
+		// NAT64 well-known prefix (RFC 6052).
+		{"64:ff9b::a9fe:a9fe", false},
+		{"64:ff9b::0808:0808", false},
+
+		// NAT64 local-use prefix (RFC 8215).
+		{"64:ff9b:1::a9fe:a9fe", false},
+
+		// Teredo (RFC 4380).
+		{"2001:0:abcd:ef12:3456:7890:a9fe:a9fe", false},
+
+		// Deprecated site-local (RFC 3879).
+		{"fec0::1", false},
+		{"feff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", false},
+
+		// IPv4-compatible IPv6 (deprecated, not handled by Unmap).
+		{"::a9fe:a9fe", false},
+
+		// Documentation prefix (RFC 3849).
+		{"2001:db8::1", false},
+
+		// Discard prefix (RFC 6666).
+		{"100::1", false},
+	} {
+		t.Run(tc.addr, func(t *testing.T) {
+			addr, err := netip.ParseAddr(tc.addr)
+			if err != nil {
+				t.Fatalf("parse %q: %v", tc.addr, err)
+			}
+			if got := IsPublicIP(addr); got != tc.public {
+				t.Fatalf("IsPublicIP(%q) = %v, want %v", tc.addr, got, tc.public)
+			}
+		})
+	}
+}
+
+// stubResolver lets tests fake DNS lookups in [ResolveAndCheckPublic].
+type stubResolver struct {
+	lookup func(host string) ([]netip.Addr, error)
+}
+
+func (s stubResolver) LookupNetIP(_ context.Context, _, host string) ([]netip.Addr, error) {
+	return s.lookup(host)
+}
+
+func withStubResolver(t *testing.T, fn func(host string) ([]netip.Addr, error)) {
+	t.Helper()
+	prev := outboundResolver
+	outboundResolver = stubResolver{lookup: fn}
+	t.Cleanup(func() { outboundResolver = prev })
+}
+
+func mustAddrs(t *testing.T, ss ...string) []netip.Addr {
+	t.Helper()
+	out := make([]netip.Addr, 0, len(ss))
+	for _, s := range ss {
+		a, err := netip.ParseAddr(s)
+		if err != nil {
+			t.Fatalf("parse %q: %v", s, err)
+		}
+		out = append(out, a)
+	}
+	return out
+}
+
+func TestFilterOutboundURL(t *testing.T) {
+	defaultDeny := []*regexp2.Regexp{
+		regexp2.MustCompile(`^https?://(10\.|172\.(1[6-9]|2[0-9]|3[01])\.|192\.168\.|169\.254\.|0\.0\.0\.0|127\.|localhost|\[::1\]|\[fd)`, 0),
+	}
+	chromiumDeny := []*regexp2.Regexp{
+		regexp2.MustCompile(`^file:(?!//\/tmp/).*`, 0),
+	}
+
+	for _, tc := range []struct {
+		scenario     string
+		rawURL       string
+		allow        []*regexp2.Regexp
+		deny         []*regexp2.Regexp
+		opts         []DecideOption
+		stub         func(host string) ([]netip.Addr, error)
+		expectErr    bool
+		expectIs     error
+		expectErrMsg string
+	}{
+		{
+			scenario:  "public IP literal passes",
+			rawURL:    "https://1.1.1.1/",
+			deny:      defaultDeny,
+			expectErr: false,
+		},
+		{
+			scenario:  "loopback IP literal blocked by default deny-list",
+			rawURL:    "http://127.0.0.1:8080/",
+			deny:      defaultDeny,
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "Issue 4: uppercase scheme normalized then blocked by deny-list",
+			rawURL:    "HTTP://127.0.0.1:8080/",
+			deny:      defaultDeny,
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "Issue 2: IPv4-mapped IPv6 evades deny-list but blocked by IP check",
+			rawURL:    "http://[::ffff:127.0.0.1]:8080/page.pdf",
+			deny:      defaultDeny,
+			opts:      []DecideOption{WithDenyPrivateIPs(true)},
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "Issue 2: IPv4-mapped IPv6 to RFC1918 blocked by IP check",
+			rawURL:    "http://[::ffff:10.0.0.1]/",
+			deny:      defaultDeny,
+			opts:      []DecideOption{WithDenyPrivateIPs(true)},
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "hostname resolving to public IP passes with deny-private-ips",
+			rawURL:    "https://example.com/",
+			deny:      defaultDeny,
+			opts:      []DecideOption{WithDenyPrivateIPs(true)},
+			stub:      func(string) ([]netip.Addr, error) { return mustAddrs(t, "93.184.216.34"), nil },
+			expectErr: false,
+		},
+		{
+			scenario:  "hostname resolving to loopback blocked with deny-private-ips",
+			rawURL:    "https://rebind.example/",
+			deny:      defaultDeny,
+			opts:      []DecideOption{WithDenyPrivateIPs(true)},
+			stub:      func(string) ([]netip.Addr, error) { return mustAddrs(t, "127.0.0.1"), nil },
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "hostname resolving to mixed public+private blocked with deny-private-ips",
+			rawURL:    "https://mixed.example/",
+			deny:      defaultDeny,
+			opts:      []DecideOption{WithDenyPrivateIPs(true)},
+			stub:      func(string) ([]netip.Addr, error) { return mustAddrs(t, "1.1.1.1", "10.0.0.1"), nil },
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "allow-list match bypasses IP check",
+			rawURL:    "http://internal.service/api",
+			allow:     []*regexp2.Regexp{regexp2.MustCompile(`^http://internal\.service`, 0)},
+			deny:      defaultDeny,
+			opts:      []DecideOption{WithDenyPrivateIPs(true)},
+			expectErr: false,
+		},
+		{
+			scenario:  "deny-list still wins over allow-list match",
+			rawURL:    "http://internal.service/api",
+			allow:     []*regexp2.Regexp{regexp2.MustCompile(`^http://internal`, 0)},
+			deny:      []*regexp2.Regexp{regexp2.MustCompile(`/api$`, 0)},
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "allow-list non-empty and no match rejects",
+			rawURL:    "https://other.example/",
+			allow:     []*regexp2.Regexp{regexp2.MustCompile(`^https://allowed\.example`, 0)},
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "file:// allowed under tmp passes Chromium default",
+			rawURL:    "file:///tmp/index.html",
+			deny:      chromiumDeny,
+			expectErr: false,
+		},
+		{
+			scenario:  "file:// outside tmp blocked by Chromium default",
+			rawURL:    "file:///etc/passwd",
+			deny:      chromiumDeny,
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "Chromium default permissive passes http to public host",
+			rawURL:    "https://example.com/",
+			deny:      chromiumDeny,
+			stub:      func(string) ([]netip.Addr, error) { return mustAddrs(t, "93.184.216.34"), nil },
+			expectErr: false,
+		},
+		{
+			scenario:  "Chromium with deny-private-ips blocks http to loopback",
+			rawURL:    "http://127.0.0.1:3000/health",
+			deny:      chromiumDeny,
+			opts:      []DecideOption{WithDenyPrivateIPs(true)},
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "Chromium with deny-private-ips blocks cloud metadata",
+			rawURL:    "http://169.254.169.254/latest/meta-data/",
+			deny:      chromiumDeny,
+			opts:      []DecideOption{WithDenyPrivateIPs(true)},
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "data: URL passes (non-network scheme)",
+			rawURL:    "data:text/html;base64,PGgxPmhpPC9oMT4=",
+			expectErr: false,
+		},
+		{
+			scenario:  "URL with no host rejected",
+			rawURL:    "http:///path",
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+		{
+			scenario:  "userinfo cannot mask host when deny-private-ips enabled",
+			rawURL:    "http://example.com@127.0.0.1/",
+			deny:      defaultDeny,
+			opts:      []DecideOption{WithDenyPrivateIPs(true)},
+			expectErr: true,
+			expectIs:  ErrFiltered,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			if tc.stub != nil {
+				withStubResolver(t, tc.stub)
+			} else {
+				// Default: any DNS lookup in a non-stubbed test is a bug.
+				withStubResolver(t, func(host string) ([]netip.Addr, error) {
+					t.Fatalf("unexpected DNS lookup for %q", host)
+					return nil, nil
+				})
+			}
+
+			err := FilterOutboundURL(context.Background(), tc.rawURL, tc.allow, tc.deny, time.Now().Add(5*time.Second), tc.opts...)
+
+			if tc.expectErr && err == nil {
+				t.Fatalf("expected error, got nil")
+			}
+			if !tc.expectErr && err != nil {
+				t.Fatalf("expected no error, got: %v", err)
+			}
+			if tc.expectIs != nil && !errors.Is(err, tc.expectIs) {
+				t.Fatalf("expected error to wrap %v, got: %v", tc.expectIs, err)
+			}
+		})
+	}
+}
+
+func TestResolveAndCheckPublic_IPLiteralLoopback(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		t.Fatalf("unexpected DNS lookup for %q", host)
+		return nil, nil
+	})
+
+	_, err := ResolveAndCheckPublic(context.Background(), "127.0.0.1")
+	if !errors.Is(err, ErrNonPublicIP) {
+		t.Fatalf("expected ErrNonPublicIP, got: %v", err)
+	}
+}
+
+func TestResolveAndCheckPublic_HostResolvesToLoopback(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		return mustAddrs(t, "127.0.0.1"), nil
+	})
+
+	_, err := ResolveAndCheckPublic(context.Background(), "rebind.example")
+	if !errors.Is(err, ErrNonPublicIP) {
+		t.Fatalf("expected ErrNonPublicIP, got: %v", err)
+	}
+}
+
+func TestResolveAndCheckPublic_HostResolvesToPublic(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		return mustAddrs(t, "1.1.1.1"), nil
+	})
+
+	addrs, err := ResolveAndCheckPublic(context.Background(), "example.com")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if len(addrs) != 1 || addrs[0].String() != "1.1.1.1" {
+		t.Fatalf("expected [1.1.1.1], got: %v", addrs)
+	}
+}
+
+func TestDecideOutbound_DenyPrivateIPs_RejectsLoopbackLiteral(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		t.Fatalf("unexpected DNS lookup for %q", host)
+		return nil, nil
+	})
+
+	_, err := DecideOutbound(
+		context.Background(),
+		"http://127.0.0.1:8080/",
+		nil, nil,
+		time.Now().Add(5*time.Second),
+		WithDenyPrivateIPs(true),
+	)
+	if !errors.Is(err, ErrFiltered) {
+		t.Fatalf("WithDenyPrivateIPs(true) must reject loopback literal, got: %v", err)
+	}
+}
+
+func TestDecideOutbound_DenyPrivateIPs_AllowsPublic(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		return mustAddrs(t, "93.184.216.34"), nil
+	})
+
+	decision, err := DecideOutbound(
+		context.Background(),
+		"http://example.com/",
+		nil, nil,
+		time.Now().Add(5*time.Second),
+		WithDenyPrivateIPs(true),
+	)
+	if err != nil {
+		t.Fatalf("expected no error for public host, got: %v", err)
+	}
+	if len(decision.Pinned) != 1 || decision.Pinned[0].String() != "93.184.216.34" {
+		t.Fatalf("decision.Pinned = %v, want [93.184.216.34]", decision.Pinned)
+	}
+}
+
+func TestDecideOutbound_DenyPublicIPs_RejectsPublic(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		return mustAddrs(t, "1.1.1.1"), nil
+	})
+
+	_, err := DecideOutbound(
+		context.Background(),
+		"http://example.com/",
+		nil, nil,
+		time.Now().Add(5*time.Second),
+		WithDenyPublicIPs(true),
+	)
+	if !errors.Is(err, ErrFiltered) {
+		t.Fatalf("WithDenyPublicIPs(true) must reject public host, got: %v", err)
+	}
+}
+
+func TestDecideOutbound_DenyPublicIPs_AllowsPrivate(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		return mustAddrs(t, "10.0.0.5"), nil
+	})
+
+	decision, err := DecideOutbound(
+		context.Background(),
+		"http://internal.svc/",
+		nil, nil,
+		time.Now().Add(5*time.Second),
+		WithDenyPublicIPs(true),
+	)
+	if err != nil {
+		t.Fatalf("expected no error for private host, got: %v", err)
+	}
+	if len(decision.Pinned) != 1 || decision.Pinned[0].String() != "10.0.0.5" {
+		t.Fatalf("decision.Pinned = %v, want [10.0.0.5]", decision.Pinned)
+	}
+}
+
+func TestDecideOutbound_DenyBoth_WhitelistOnly(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		return mustAddrs(t, "1.1.1.1"), nil
+	})
+
+	// Both denies active and no allow-list match: every resolved address
+	// fails. Only an allow-list match can permit a destination under
+	// this posture.
+	_, err := DecideOutbound(
+		context.Background(),
+		"http://example.com/",
+		nil, nil,
+		time.Now().Add(5*time.Second),
+		WithDenyPrivateIPs(true),
+		WithDenyPublicIPs(true),
+	)
+	if !errors.Is(err, ErrFiltered) {
+		t.Fatalf("expected ErrFiltered with both denies enabled, got: %v", err)
+	}
+}
+
+func TestDecideOutbound_DenyLists_WinOverDenyPrivateIPs(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		t.Fatalf("unexpected DNS lookup for %q", host)
+		return nil, nil
+	})
+
+	// The regex deny-list fires before any resolution; verifies that
+	// operator-supplied deny patterns remain effective regardless of
+	// IP-class options.
+	deny := []*regexp2.Regexp{regexp2.MustCompile(`^http://evil\.`, 0)}
+
+	_, err := DecideOutbound(
+		context.Background(),
+		"http://evil.local/",
+		nil, deny,
+		time.Now().Add(5*time.Second),
+		WithDenyPrivateIPs(true),
+	)
+	if !errors.Is(err, ErrFiltered) {
+		t.Fatalf("deny-list must still reject, got: %v", err)
+	}
+}
+
+func TestDecideOutbound_Permissive_AllowsPrivate(t *testing.T) {
+	withStubResolver(t, func(host string) ([]netip.Addr, error) {
+		return mustAddrs(t, "10.0.0.5"), nil
+	})
+
+	// No options passed: default posture is permissive across both
+	// IP classes. The caller still gets pinned IPs for dial safety.
+	decision, err := DecideOutbound(
+		context.Background(),
+		"http://internal.svc/",
+		nil, nil,
+		time.Now().Add(5*time.Second),
+	)
+	if err != nil {
+		t.Fatalf("permissive default must allow private host, got: %v", err)
+	}
+	if len(decision.Pinned) != 1 || decision.Pinned[0].String() != "10.0.0.5" {
+		t.Fatalf("decision.Pinned = %v, want [10.0.0.5]", decision.Pinned)
+	}
+}

pkg/gotenberg/pdfengine.go

@@ -4,8 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-
-	"go.uber.org/zap"
+	"log/slog"
 )
 
 var (
@@ -28,6 +27,18 @@ var (
 	// ErrPdfEncryptionNotSupported is returned when encryption
 	// is not supported by the PDF engine.
 	ErrPdfEncryptionNotSupported = errors.New("encryption not supported")
+
+	// ErrPdfStampSourceNotSupported is returned when a stamp source type
+	// is not supported by the PDF engine.
+	ErrPdfStampSourceNotSupported = errors.New("stamp source not supported")
+
+	// ErrPdfRotateAngleNotSupported is returned when the rotation angle is
+	// not supported.
+	ErrPdfRotateAngleNotSupported = errors.New("rotation angle not supported")
+
+	// ErrPdfFacturXValueNotSupported is returned when a Factur-X field value
+	// (e.g., an unknown conformance level or document type) is not supported.
+	ErrPdfFacturXValueNotSupported = errors.New("Factur-X value not supported")
 )
 
 // PdfEngineInvalidArgsError represents an error returned by a PDF engine when
@@ -49,6 +60,33 @@ func NewPdfEngineInvalidArgs(engine, msg string) error {
 	return &PdfEngineInvalidArgsError{engine, msg}
 }
 
+const (
+	// StampSourceText represents a text-based stamp source.
+	StampSourceText string = "text"
+
+	// StampSourceImage represents an image-based stamp source.
+	StampSourceImage string = "image"
+
+	// StampSourcePDF represents a PDF-based stamp source.
+	StampSourcePDF string = "pdf"
+)
+
+// Stamp gathers the data required to apply a watermark or stamp to a PDF.
+type Stamp struct {
+	// Source is one of "text", "image", or "pdf".
+	Source string
+
+	// Expression is the text content (for text source) or file path (for
+	// image/pdf source).
+	Expression string
+
+	// Pages is the optional page range to apply the stamp to.
+	Pages string
+
+	// Options holds engine-specific styling options.
+	Options map[string]string
+}
+
 const (
 	// SplitModeIntervals represents a mode where a PDF is split at specific
 	// intervals.
@@ -109,6 +147,117 @@ type PdfFormats struct {
 	PdfUa bool
 }
 
+// PdfPermissions gathers the document permissions enforced when a PDF is
+// encrypted. Each field defaults to true (the action is allowed); set a field
+// to false to restrict it. Restrictions are advisory: viewers honor them, but
+// they are not cryptographically enforced once the document opens.
+type PdfPermissions struct {
+	// AllowPrinting permits printing the document.
+	AllowPrinting bool
+
+	// AllowCopying permits extracting text and graphics.
+	AllowCopying bool
+
+	// AllowModifying permits changing the document content.
+	AllowModifying bool
+
+	// AllowAnnotating permits adding or modifying annotations.
+	AllowAnnotating bool
+
+	// AllowFillingForms permits filling in form fields.
+	AllowFillingForms bool
+
+	// AllowAssembling permits inserting, deleting, and rotating pages.
+	AllowAssembling bool
+}
+
+// Restricted reports whether at least one permission is denied.
+func (p PdfPermissions) Restricted() bool {
+	return !p.AllowPrinting ||
+		!p.AllowCopying ||
+		!p.AllowModifying ||
+		!p.AllowAnnotating ||
+		!p.AllowFillingForms ||
+		!p.AllowAssembling
+}
+
+// EncryptOptions gathers the parameters for encrypting a PDF. An empty
+// UserPassword with a set OwnerPassword produces an owner-only document: it
+// opens without a password but enforces the [PdfPermissions].
+type EncryptOptions struct {
+	// UserPassword is required to open the document. Empty means no open
+	// password.
+	UserPassword string
+
+	// OwnerPassword grants full access (lifts the permission restrictions).
+	// When empty, it defaults to UserPassword.
+	OwnerPassword string
+
+	// Permissions are the actions allowed when opened with the user password.
+	Permissions PdfPermissions
+}
+
+// Bookmark represents a node in the PDF document's outline
+// (table of contents).
+type Bookmark struct {
+	Title    string     `json:"title"`
+	Page     int        `json:"page"`
+	Children []Bookmark `json:"children,omitempty"`
+}
+
+const (
+	// FacturXConformanceMinimum represents the MINIMUM Factur-X conformance level.
+	FacturXConformanceMinimum string = "MINIMUM"
+
+	// FacturXConformanceBasicWL represents the BASIC WL Factur-X conformance level.
+	FacturXConformanceBasicWL string = "BASIC WL"
+
+	// FacturXConformanceBasic represents the BASIC Factur-X conformance level.
+	FacturXConformanceBasic string = "BASIC"
+
+	// FacturXConformanceEN16931 represents the EN 16931 Factur-X conformance level.
+	FacturXConformanceEN16931 string = "EN 16931"
+
+	// FacturXConformanceExtended represents the EXTENDED Factur-X conformance level.
+	FacturXConformanceExtended string = "EXTENDED"
+
+	// FacturXConformanceXRechnung represents the XRECHNUNG Factur-X conformance level.
+	FacturXConformanceXRechnung string = "XRECHNUNG"
+
+	// FacturXDocumentTypeInvoice represents the INVOICE Factur-X document type.
+	FacturXDocumentTypeInvoice string = "INVOICE"
+
+	// FacturXDocumentTypeOrder represents the ORDER Factur-X document type.
+	FacturXDocumentTypeOrder string = "ORDER"
+
+	// FacturXDocumentTypeOrderResponse represents the ORDER_RESPONSE Factur-X document type.
+	FacturXDocumentTypeOrderResponse string = "ORDER_RESPONSE"
+
+	// FacturXDocumentTypeOrderChange represents the ORDER_CHANGE Factur-X document type.
+	FacturXDocumentTypeOrderChange string = "ORDER_CHANGE"
+
+	// FacturXDocumentFileName is the canonical name of the embedded XML invoice
+	// mandated by the Factur-X standard. Validators expect this exact name.
+	FacturXDocumentFileName string = "factur-x.xml"
+)
+
+// FacturX gathers the properties required by the Factur-X/ZUGFeRD standard for
+// the document-level XMP metadata packet of a PDF/A-3.
+type FacturX struct {
+	// ConformanceLevel is one of the FacturXConformance* values.
+	ConformanceLevel string
+
+	// DocumentType is one of the FacturXDocumentType* values.
+	DocumentType string
+
+	// DocumentFileName is the name of the embedded XML invoice. It is set
+	// internally to the canonical [FacturXDocumentFileName], not by the caller.
+	DocumentFileName string
+
+	// Version is the Factur-X version (e.g., "1.0").
+	Version string
+}
+
 // PdfEngine provides an interface for operations on PDFs. Implementations
 // can use various tools like PDFtk, or implement functionality directly in
 // Go.
@@ -117,36 +266,75 @@ type PdfFormats struct {
 type PdfEngine interface {
 	// Merge combines multiple PDFs into a single PDF. The resulting page order
 	// is determined by the order of files provided in inputPaths.
-	Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error
+	Merge(ctx context.Context, logger *slog.Logger, inputPaths []string, outputPath string) error
 
 	// Split splits a given PDF file.
-	Split(ctx context.Context, logger *zap.Logger, mode SplitMode, inputPath, outputDirPath string) ([]string, error)
+	Split(ctx context.Context, logger *slog.Logger, mode SplitMode, inputPath, outputDirPath string) ([]string, error)
 
 	// Flatten merges existing annotation appearances with page content,
 	// effectively deleting the original annotations. This process can flatten
 	// forms as well as forms share a relationship with annotations. Note that
 	// this operation is irreversible.
-	Flatten(ctx context.Context, logger *zap.Logger, inputPath string) error
+	Flatten(ctx context.Context, logger *slog.Logger, inputPath string) error
 
 	// Convert transforms a given PDF to the specified formats defined in
 	// PdfFormats. If no format, it does nothing.
-	Convert(ctx context.Context, logger *zap.Logger, formats PdfFormats, inputPath, outputPath string) error
+	Convert(ctx context.Context, logger *slog.Logger, formats PdfFormats, inputPath, outputPath string) error
 
 	// ReadMetadata extracts the metadata of a given PDF file.
-	ReadMetadata(ctx context.Context, logger *zap.Logger, inputPath string) (map[string]any, error)
+	ReadMetadata(ctx context.Context, logger *slog.Logger, inputPath string) (map[string]any, error)
+
+	// PageCount returns the number of pages in a PDF file.
+	PageCount(ctx context.Context, logger *slog.Logger, inputPath string) (int, error)
 
 	// WriteMetadata writes the metadata into a given PDF file.
-	WriteMetadata(ctx context.Context, logger *zap.Logger, metadata map[string]any, inputPath string) error
+	WriteMetadata(ctx context.Context, logger *slog.Logger, metadata map[string]any, inputPath string) error
 
-	// Encrypt adds password protection to a PDF file.
-	// The userPassword is required to open the document.
-	// The ownerPassword provides full access to the document.
-	// If the ownerPassword is empty, it defaults to the userPassword.
-	Encrypt(ctx context.Context, logger *zap.Logger, inputPath, userPassword, ownerPassword string) error
+	// ReadBookmarks reads the document outline (bookmarks) of a PDF file.
+	ReadBookmarks(ctx context.Context, logger *slog.Logger, inputPath string) ([]Bookmark, error)
+
+	// WriteBookmarks adds a document outline (bookmarks) to a PDF file.
+	// The bookmarks parameter represents the hierarchical tree of the outline.
+	WriteBookmarks(ctx context.Context, logger *slog.Logger, inputPath string, bookmarks []Bookmark) error
+
+	// Encrypt adds password protection and permission restrictions to a PDF
+	// file, as described by [EncryptOptions]. An empty user password with a set
+	// owner password yields an owner-only document (opens without a password,
+	// permissions enforced).
+	Encrypt(ctx context.Context, logger *slog.Logger, inputPath string, opts EncryptOptions) error
 
 	// EmbedFiles embeds files into a PDF. All files are embedded as file attachments
 	// without modifying the main PDF content.
-	EmbedFiles(ctx context.Context, logger *zap.Logger, filePaths []string, inputPath string) error
+	// TODO: attachments instead? Rename the route?
+	EmbedFiles(ctx context.Context, logger *slog.Logger, filePaths []string, inputPath string) error
+
+	// EmbedFilesMetadata sets metadata (such as MIME type and AFRelationship)
+	// on already-embedded files in a PDF. The metadata map is keyed by
+	// filename, with each value being a map of property names to values
+	// (e.g., "mimeType" and "relationship").
+	EmbedFilesMetadata(ctx context.Context, logger *slog.Logger, metadata map[string]map[string]string, inputPath string) error
+
+	// Watermark applies a watermark (behind page content) to a PDF file.
+	Watermark(ctx context.Context, logger *slog.Logger, inputPath string, stamp Stamp) error
+
+	// Stamp applies a stamp (on top of page content) to a PDF file.
+	Stamp(ctx context.Context, logger *slog.Logger, inputPath string, stamp Stamp) error
+
+	// Rotate rotates pages of a PDF file by the given angle (90, 180, 270).
+	// If pages is empty, all pages are rotated.
+	Rotate(ctx context.Context, logger *slog.Logger, inputPath string, angle int, pages string) error
+
+	// InjectFacturXXMP injects Factur-X/ZUGFeRD XMP metadata into the
+	// document-level XMP packet (Catalog /Metadata stream) of a PDF/A-3. It
+	// registers the fx namespace, the four fx properties, and the matching
+	// PDF/A extension schema so the result stays PDF/A-valid.
+	InjectFacturXXMP(ctx context.Context, logger *slog.Logger, facturX FacturX, inputPath string) error
+
+	// ReadPdfAConformance reads the PDF/A part and conformance (e.g., "3" and
+	// "B") from the document-level XMP packet (Catalog /Metadata stream,
+	// pdfaid:part and pdfaid:conformance). It returns empty strings when the
+	// document carries no PDF/A identification.
+	ReadPdfAConformance(ctx context.Context, logger *slog.Logger, inputPath string) (part string, conformance string, err error)
 }
 
 // PdfEngineProvider offers an interface to instantiate a [PdfEngine].

pkg/gotenberg/semconv/bench_test.go

@@ -0,0 +1,48 @@
+// Code generated by gotmpl. DO NOT MODIFY.
+// source: internal/shared/semconv/bench_test.go.tmpl
+
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package semconv
+
+import (
+	"net/http"
+	"net/url"
+	"testing"
+
+	"go.opentelemetry.io/otel/attribute"
+)
+
+var benchHTTPServerRequestResults []attribute.KeyValue
+
+// BenchmarkHTTPServerRequest allows comparison between different version of the HTTP server.
+// To use an alternative start this test with OTEL_SEMCONV_STABILITY_OPT_IN set to the
+// version under test.
+func BenchmarkHTTPServerRequest(b *testing.B) {
+	// Request was generated from TestHTTPServerRequest request.
+	req := &http.Request{
+		Method: http.MethodGet,
+		URL: &url.URL{
+			Path: "/",
+		},
+		Proto:      "HTTP/1.1",
+		ProtoMajor: 1,
+		ProtoMinor: 1,
+		Header: http.Header{
+			"User-Agent":      []string{"Go-http-client/1.1"},
+			"Accept-Encoding": []string{"gzip"},
+		},
+		Body:       http.NoBody,
+		Host:       "127.0.0.1:39093",
+		RemoteAddr: "127.0.0.1:38738",
+		RequestURI: "/",
+	}
+	serv := NewHTTPServer(nil)
+
+	b.ReportAllocs()
+	b.ResetTimer()
+	for range b.N {
+		benchHTTPServerRequestResults = serv.RequestTraceAttrs("", req, RequestTraceAttrsOpts{})
+	}
+}

pkg/gotenberg/semconv/client.go

@@ -0,0 +1,308 @@
+// Code generated by gotmpl. DO NOT MODIFY.
+// source: internal/shared/semconv/client.go.tmpl
+
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+// Package semconv provides OpenTelemetry semantic convention types and
+// functionality.
+package semconv // import "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv"
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"reflect"
+	"slices"
+	"strconv"
+	"strings"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/semconv/v1.39.0"
+	"go.opentelemetry.io/otel/semconv/v1.39.0/httpconv"
+)
+
+type HTTPClient struct {
+	requestBodySize httpconv.ClientRequestBodySize
+	requestDuration httpconv.ClientRequestDuration
+}
+
+func NewHTTPClient(meter metric.Meter) HTTPClient {
+	client := HTTPClient{}
+
+	var err error
+	client.requestBodySize, err = httpconv.NewClientRequestBodySize(meter)
+	handleErr(err)
+
+	client.requestDuration, err = httpconv.NewClientRequestDuration(
+		meter,
+		metric.WithExplicitBucketBoundaries(0.005, 0.01, 0.025, 0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1, 2.5, 5, 7.5, 10),
+	)
+	handleErr(err)
+
+	return client
+}
+
+func (n HTTPClient) Status(code int) (codes.Code, string) {
+	if code == 0 {
+		return codes.Error, "No HTTP status code"
+	}
+	if code < 100 || code >= 600 {
+		return codes.Error, fmt.Sprintf("Invalid HTTP status code %d", code)
+	}
+	if code >= 400 {
+		return codes.Error, http.StatusText(code)
+	}
+	return codes.Ok,  ""
+}
+
+// RequestTraceAttrs returns trace attributes for an HTTP request made by a client.
+func (n HTTPClient) RequestTraceAttrs(req *http.Request) []attribute.KeyValue {
+	/*
+	 below attributes are returned:
+	 - http.request.method
+	 - http.request.method.original
+	 - url.full
+	 - server.address
+	 - server.port
+	 - network.protocol.name
+	 - network.protocol.version
+	*/
+	numOfAttributes := 3 // URL, server address, proto, and method.
+
+	var urlHost string
+	if req.URL != nil {
+		urlHost = req.URL.Host
+	}
+	var requestHost string
+	var requestPort int
+	for _, hostport := range []string{urlHost, req.Header.Get("Host")} {
+		requestHost, requestPort = SplitHostPort(hostport)
+		if requestHost != "" || requestPort > 0 {
+			break
+		}
+	}
+
+	eligiblePort := requiredHTTPPort(req.URL != nil && req.URL.Scheme == "https", requestPort)
+	if eligiblePort > 0 {
+		numOfAttributes++
+	}
+	useragent := req.UserAgent()
+	if useragent != "" {
+		numOfAttributes++
+	}
+
+	protoName, protoVersion := netProtocol(req.Proto)
+	if protoName != "" && protoName != "http" {
+		numOfAttributes++
+	}
+	if protoVersion != "" {
+		numOfAttributes++
+	}
+
+	method, originalMethod := n.method(req.Method)
+	if originalMethod != (attribute.KeyValue{}) {
+		numOfAttributes++
+	}
+
+	attrs := make([]attribute.KeyValue, 0, numOfAttributes)
+
+	attrs = append(attrs, method)
+	if originalMethod != (attribute.KeyValue{}) {
+		attrs = append(attrs, originalMethod)
+	}
+
+	var u string
+	if req.URL != nil {
+		// Remove any username/password info that may be in the URL.
+		userinfo := req.URL.User
+		req.URL.User = nil
+		u = req.URL.String()
+		// Restore any username/password info that was removed.
+		req.URL.User = userinfo
+	}
+	attrs = append(attrs, semconv.URLFull(u))
+
+	attrs = append(attrs, semconv.ServerAddress(requestHost))
+	if eligiblePort > 0 {
+		attrs = append(attrs, semconv.ServerPort(eligiblePort))
+	}
+
+	if protoName != "" && protoName != "http" {
+		attrs = append(attrs, semconv.NetworkProtocolName(protoName))
+	}
+	if protoVersion != "" {
+		attrs = append(attrs, semconv.NetworkProtocolVersion(protoVersion))
+	}
+
+	return attrs
+}
+
+// ResponseTraceAttrs returns trace attributes for an HTTP response made by a client.
+func (n HTTPClient) ResponseTraceAttrs(resp *http.Response) []attribute.KeyValue {
+	/*
+	 below attributes are returned:
+	 - http.response.status_code
+	 - error.type
+	*/
+	var count int
+	if resp.StatusCode > 0 {
+		count++
+	}
+
+	if isErrorStatusCode(resp.StatusCode) {
+		count++
+	}
+
+	attrs := make([]attribute.KeyValue, 0, count)
+	if resp.StatusCode > 0 {
+		attrs = append(attrs, semconv.HTTPResponseStatusCode(resp.StatusCode))
+	}
+
+	if isErrorStatusCode(resp.StatusCode) {
+		errorType := strconv.Itoa(resp.StatusCode)
+		attrs = append(attrs, semconv.ErrorTypeKey.String(errorType))
+	}
+	return attrs
+}
+
+func (n HTTPClient) ErrorType(err error) attribute.KeyValue {
+	t := reflect.TypeOf(err)
+	var value string
+	if t.PkgPath() == "" && t.Name() == "" {
+		// Likely a builtin type.
+		value = t.String()
+	} else {
+		value = fmt.Sprintf("%s.%s", t.PkgPath(), t.Name())
+	}
+
+	if value == "" {
+		return semconv.ErrorTypeOther
+	}
+
+	return semconv.ErrorTypeKey.String(value)
+}
+
+func (n HTTPClient) method(method string) (attribute.KeyValue, attribute.KeyValue) {
+	if method == "" {
+		return semconv.HTTPRequestMethodGet, attribute.KeyValue{}
+	}
+	if attr, ok := methodLookup[method]; ok {
+		return attr, attribute.KeyValue{}
+	}
+
+	orig := semconv.HTTPRequestMethodOriginal(method)
+	if attr, ok := methodLookup[strings.ToUpper(method)]; ok {
+		return attr, orig
+	}
+	return semconv.HTTPRequestMethodGet, orig
+}
+
+func (n HTTPClient) MetricAttributes(req *http.Request, statusCode int, additionalAttributes []attribute.KeyValue) []attribute.KeyValue {
+	num := len(additionalAttributes) + 2
+	var h string
+	if req.URL != nil {
+		h = req.URL.Host
+	}
+	var requestHost string
+	var requestPort int
+	for _, hostport := range []string{h, req.Header.Get("Host")} {
+		requestHost, requestPort = SplitHostPort(hostport)
+		if requestHost != "" || requestPort > 0 {
+			break
+		}
+	}
+
+	port := requiredHTTPPort(req.URL != nil && req.URL.Scheme == "https", requestPort)
+	if port > 0 {
+		num++
+	}
+
+	protoName, protoVersion := netProtocol(req.Proto)
+	if protoName != "" {
+		num++
+	}
+	if protoVersion != "" {
+		num++
+	}
+
+	if statusCode > 0 {
+		num++
+	}
+
+	attributes := slices.Grow(additionalAttributes, num)
+	attributes = append(attributes,
+		semconv.HTTPRequestMethodKey.String(standardizeHTTPMethod(req.Method)),
+		semconv.ServerAddress(requestHost),
+		n.scheme(req),
+	)
+
+	if port > 0 {
+		attributes = append(attributes, semconv.ServerPort(port))
+	}
+	if protoName != "" {
+		attributes = append(attributes, semconv.NetworkProtocolName(protoName))
+	}
+	if protoVersion != "" {
+		attributes = append(attributes, semconv.NetworkProtocolVersion(protoVersion))
+	}
+
+	if statusCode > 0 {
+		attributes = append(attributes, semconv.HTTPResponseStatusCode(statusCode))
+	}
+	return attributes
+}
+
+type MetricOpts struct {
+	measurement metric.MeasurementOption
+	addOptions  metric.AddOption
+}
+
+func (o MetricOpts) MeasurementOption() metric.MeasurementOption {
+	return o.measurement
+}
+
+func (o MetricOpts) AddOptions() metric.AddOption {
+	return o.addOptions
+}
+
+func (n HTTPClient) MetricOptions(ma MetricAttributes) map[string]MetricOpts {
+	opts := map[string]MetricOpts{}
+
+	attributes := n.MetricAttributes(ma.Req, ma.StatusCode, ma.AdditionalAttributes)
+	set := metric.WithAttributeSet(attribute.NewSet(attributes...))
+	opts["new"] = MetricOpts{
+		measurement: set,
+		addOptions:  set,
+	}
+
+	return opts
+}
+
+func (n HTTPClient) RecordMetrics(ctx context.Context, md MetricData, opts map[string]MetricOpts) {
+	n.requestBodySize.Inst().Record(ctx, md.RequestSize, opts["new"].MeasurementOption())
+	n.requestDuration.Inst().Record(ctx, md.ElapsedTime/1000, opts["new"].MeasurementOption())
+}
+
+// TraceAttributes returns attributes for httptrace.
+func (n HTTPClient) TraceAttributes(host string) []attribute.KeyValue {
+	return []attribute.KeyValue{
+		semconv.ServerAddress(host),
+	}
+}
+
+func (n HTTPClient) scheme(req *http.Request) attribute.KeyValue {
+	if req.URL != nil && req.URL.Scheme != "" {
+		return semconv.URLScheme(req.URL.Scheme)
+	}
+	if req.TLS != nil {
+		return semconv.URLScheme("https")
+	}
+	return semconv.URLScheme("http")
+}
+
+func isErrorStatusCode(code int) bool {
+	return code >= 400 || code < 100
+}

pkg/gotenberg/semconv/client_test.go

@@ -0,0 +1,182 @@
+// Code generated by gotmpl. DO NOT MODIFY.
+// source: internal/shared/semconv/client_test.go.tmpl
+
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package semconv
+
+import (
+	"net/http"
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+)
+
+func TestHTTPClientStatus(t *testing.T) {
+	tests := []struct {
+		code int
+		stat codes.Code
+		msg  bool
+	}{
+		{0, codes.Error, true},
+		{http.StatusContinue, codes.Ok, false},
+		{http.StatusSwitchingProtocols, codes.Ok, false},
+		{http.StatusProcessing, codes.Ok, false},
+		{http.StatusEarlyHints, codes.Ok, false},
+		{http.StatusOK, codes.Ok, false},
+		{http.StatusCreated, codes.Ok, false},
+		{http.StatusAccepted, codes.Ok, false},
+		{http.StatusNonAuthoritativeInfo, codes.Ok, false},
+		{http.StatusNoContent, codes.Ok, false},
+		{http.StatusResetContent, codes.Ok, false},
+		{http.StatusPartialContent, codes.Ok, false},
+		{http.StatusMultiStatus, codes.Ok, false},
+		{http.StatusAlreadyReported, codes.Ok, false},
+		{http.StatusIMUsed, codes.Ok, false},
+		{http.StatusMultipleChoices, codes.Ok, false},
+		{http.StatusMovedPermanently, codes.Ok, false},
+		{http.StatusFound, codes.Ok, false},
+		{http.StatusSeeOther, codes.Ok, false},
+		{http.StatusNotModified, codes.Ok, false},
+		{http.StatusUseProxy, codes.Ok, false},
+		{306, codes.Ok, false},
+		{http.StatusTemporaryRedirect, codes.Ok, false},
+		{http.StatusPermanentRedirect, codes.Ok, false},
+		{http.StatusBadRequest, codes.Error, true},
+		{http.StatusUnauthorized, codes.Error, true},
+		{http.StatusPaymentRequired, codes.Error, true},
+		{http.StatusForbidden, codes.Error, true},
+		{http.StatusNotFound, codes.Error, true},
+		{http.StatusMethodNotAllowed, codes.Error, true},
+		{http.StatusNotAcceptable, codes.Error, true},
+		{http.StatusProxyAuthRequired, codes.Error, true},
+		{http.StatusRequestTimeout, codes.Error, true},
+		{http.StatusConflict, codes.Error, true},
+		{http.StatusGone, codes.Error, true},
+		{http.StatusLengthRequired, codes.Error, true},
+		{http.StatusPreconditionFailed, codes.Error, true},
+		{http.StatusRequestEntityTooLarge, codes.Error, true},
+		{http.StatusRequestURITooLong, codes.Error, true},
+		{http.StatusUnsupportedMediaType, codes.Error, true},
+		{http.StatusRequestedRangeNotSatisfiable, codes.Error, true},
+		{http.StatusExpectationFailed, codes.Error, true},
+		{http.StatusTeapot, codes.Error, true},
+		{http.StatusMisdirectedRequest, codes.Error, true},
+		{http.StatusUnprocessableEntity, codes.Error, true},
+		{http.StatusLocked, codes.Error, true},
+		{http.StatusFailedDependency, codes.Error, true},
+		{http.StatusTooEarly, codes.Error, true},
+		{http.StatusUpgradeRequired, codes.Error, true},
+		{http.StatusPreconditionRequired, codes.Error, true},
+		{http.StatusTooManyRequests, codes.Error, true},
+		{http.StatusRequestHeaderFieldsTooLarge, codes.Error, true},
+		{http.StatusUnavailableForLegalReasons, codes.Error, true},
+		{499, codes.Error, false},
+		{http.StatusInternalServerError, codes.Error, true},
+		{http.StatusNotImplemented, codes.Error, true},
+		{http.StatusBadGateway, codes.Error, true},
+		{http.StatusServiceUnavailable, codes.Error, true},
+		{http.StatusGatewayTimeout, codes.Error, true},
+		{http.StatusHTTPVersionNotSupported, codes.Error, true},
+		{http.StatusVariantAlsoNegotiates, codes.Error, true},
+		{http.StatusInsufficientStorage, codes.Error, true},
+		{http.StatusLoopDetected, codes.Error, true},
+		{http.StatusNotExtended, codes.Error, true},
+		{http.StatusNetworkAuthenticationRequired, codes.Error, true},
+		{600, codes.Error, true},
+	}
+
+	for _, test := range tests {
+		t.Run(strconv.Itoa(test.code), func(t *testing.T) {
+			c, msg := HTTPClient{}.Status(test.code)
+			assert.Equal(t, test.stat, c)
+			if test.msg && msg == "" {
+				t.Errorf("expected non-empty message for %d", test.code)
+			} else if !test.msg && msg != "" {
+				t.Errorf("expected empty message for %d, got: %s", test.code, msg)
+			}
+		})
+	}
+}
+
+func TestHTTPClient_MetricAttributes(t *testing.T) {
+	defaultRequest, err := http.NewRequest("GET", "http://example.com/path?query=test", http.NoBody)
+	require.NoError(t, err)
+	httpsRequest, err := http.NewRequest("GET", "https://example.com/path?query=test", http.NoBody)
+	require.NoError(t, err)
+
+	tests := []struct {
+		name                 string
+		server               string
+		req                  *http.Request
+		statusCode           int
+		additionalAttributes []attribute.KeyValue
+		wantFunc             func(t *testing.T, attrs []attribute.KeyValue)
+	}{
+		{
+			name:                 "routine testing",
+			req:                  defaultRequest,
+			statusCode:           200,
+			additionalAttributes: []attribute.KeyValue{attribute.String("test", "test")},
+			wantFunc: func(t *testing.T, attrs []attribute.KeyValue) {
+				require.Len(t, attrs, 7)
+				assert.ElementsMatch(t, []attribute.KeyValue{
+					attribute.String("http.request.method", "GET"),
+					attribute.String("server.address", "example.com"),
+					attribute.String("url.scheme", "http"),
+					attribute.String("network.protocol.name", "http"),
+					attribute.String("network.protocol.version", "1.1"),
+					attribute.Int64("http.response.status_code", 200),
+					attribute.String("test", "test"),
+				}, attrs)
+			},
+		},
+		{
+			name:                 "use server address",
+			req:                  defaultRequest,
+			statusCode:           200,
+			additionalAttributes: nil,
+			wantFunc: func(t *testing.T, attrs []attribute.KeyValue) {
+				require.Len(t, attrs, 6)
+				assert.ElementsMatch(t, []attribute.KeyValue{
+					attribute.String("http.request.method", "GET"),
+					attribute.String("server.address", "example.com"),
+					attribute.String("url.scheme", "http"),
+					attribute.String("network.protocol.name", "http"),
+					attribute.String("network.protocol.version", "1.1"),
+					attribute.Int64("http.response.status_code", 200),
+				}, attrs)
+			},
+		},
+		{
+			name:                 "https scheme",
+			req:                  httpsRequest,
+			statusCode:           200,
+			additionalAttributes: nil,
+			wantFunc: func(t *testing.T, attrs []attribute.KeyValue) {
+				require.Len(t, attrs, 6)
+				assert.ElementsMatch(t, []attribute.KeyValue{
+					attribute.String("http.request.method", "GET"),
+					attribute.String("server.address", "example.com"),
+					attribute.String("url.scheme", "https"),
+					attribute.String("network.protocol.name", "http"),
+					attribute.String("network.protocol.version", "1.1"),
+					attribute.Int64("http.response.status_code", 200),
+				}, attrs)
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := HTTPClient{}.MetricAttributes(tt.req, tt.statusCode, tt.additionalAttributes)
+			tt.wantFunc(t, got)
+		})
+	}
+}

pkg/gotenberg/semconv/common_test.go

@@ -0,0 +1,71 @@
+// Code generated by gotmpl. DO NOT MODIFY.
+// source: internal/shared/semconv/common_test.go.tmpl
+
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package semconv_test
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg/semconv"
+	"go.opentelemetry.io/otel/attribute"
+)
+
+type testServerReq struct {
+	hostname   string
+	serverPort int
+	peerAddr   string
+	peerPort   int
+	clientIP   string
+}
+
+func testTraceRequest(t *testing.T, serv semconv.HTTPServer, want func(testServerReq) []attribute.KeyValue) {
+	t.Helper()
+
+	got := make(chan *http.Request, 1)
+	handler := func(w http.ResponseWriter, r *http.Request) {
+		got <- r
+		close(got)
+		w.WriteHeader(http.StatusOK)
+	}
+
+	srv := httptest.NewServer(http.HandlerFunc(handler))
+	defer srv.Close()
+
+	srvURL, err := url.Parse(srv.URL)
+	require.NoError(t, err)
+	srvPort, err := strconv.ParseInt(srvURL.Port(), 10, 32)
+	require.NoError(t, err)
+
+	resp, err := srv.Client().Get(srv.URL)
+	require.NoError(t, err)
+	require.NoError(t, resp.Body.Close())
+
+	req := <-got
+	peer, peerPort := semconv.SplitHostPort(req.RemoteAddr)
+
+	const user = "alice"
+	req.SetBasicAuth(user, "pswrd")
+
+	const clientIP = "127.0.0.5"
+	req.Header.Add("X-Forwarded-For", clientIP)
+
+	srvReq := testServerReq{
+		hostname:   srvURL.Hostname(),
+		serverPort: int(srvPort),
+		peerAddr:   peer,
+		peerPort:   peerPort,
+		clientIP:   clientIP,
+	}
+
+	assert.ElementsMatch(t, want(srvReq), serv.RequestTraceAttrs("", req, semconv.RequestTraceAttrsOpts{}))
+}

pkg/gotenberg/semconv/doc.go

@@ -0,0 +1,5 @@
+// Package semconv contains utilities not yet exposed in the OpenTelemetry Go
+// SDK. Remove this package once an official API exists.
+//
+// See https://github.com/open-telemetry/opentelemetry-go-contrib/issues/4580.
+package semconv