chore(chromium): add test without custom header/footer templates

feat(chromium): add new omitBackground form field (closes #226 )
chore: upgrade golangci-lint from 1.49 to 1.50
2026-08-08 08:32:16 +01:00 · 2022-10-21 12:10:16 +02:00 · 2022-10-21 11:51:06 +02:00 · 2022-10-21 11:51:06 +02:00 · 2022-10-21 11:51:06 +02:00 · 2022-10-17 22:16:44 +02:00
59 changed files with 5035 additions and 3266 deletions
--- a/.github/workflows/continuous_integration.yml
+++ b/.github/workflows/continuous_integration.yml
@@ -19,7 +19,7 @@ jobs:
      - name: Run linters
        uses: golangci/golangci-lint-action@v2
        with:
-          version: v1.43
+          version: v1.50.0

  tests:
    needs:
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -2,7 +2,6 @@ linters:
  disable-all: true
  enable:
    - bodyclose
-    - deadcode
    - errcheck
    - gofmt
    - goimports
@@ -13,11 +12,9 @@ linters:
    - misspell
    - prealloc
    - staticcheck
-    - structcheck
    - typecheck
    - unconvert
    - unused
-    - varcheck

 run:
  deadline: 5m
--- a/2
+++ b/2
@@ -1,6 +1,6 @@
 MIT License

-Copyright (c) 2021 Julien Neuhart
+Copyright (c) 2022 Julien Neuhart

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
--- a/18
+++ b/18
@@ -5,14 +5,14 @@ help: ## Show the help
 .PHONY: it
 it: build build-tests ## Initialize the development environment

-GOLANG_VERSION=1.17
+GOLANG_VERSION=1.19
 DOCKER_REPOSITORY=gotenberg
 GOTENBERG_VERSION=snapshot
 GOTENBERG_USER_GID=1001
 GOTENBERG_USER_UID=1001
-NOTO_COLOR_EMOJI_VERSION=v2.028 # See https://github.com/googlefonts/noto-emoji/releases.
-PDFTK_VERSION=1527259628 # See https://gitlab.com/pdftk-java/pdftk/-/releases - Binary package.
-GOLANGCI_LINT_VERSION=v1.43.0 # See https://github.com/golangci/golangci-lint/releases.
+NOTO_COLOR_EMOJI_VERSION=v2.038 # See https://github.com/googlefonts/noto-emoji/releases.
+PDFTK_VERSION=v3.3.3 # See https://gitlab.com/pdftk-java/pdftk/-/releases - Binary package.
+GOLANGCI_LINT_VERSION=v1.50.0 # See https://github.com/golangci/golangci-lint/releases.

 .PHONY: build
 build: ## Build the Gotenberg's Docker image
@@ -34,9 +34,11 @@ API_ROOT_PATH=/
 API_TRACE_HEADER=Gotenberg-Trace
 API_DISABLE_HEALTH_CHECK_LOGGING=false
 CHROMIUM_INCOGNITO=false
+CHROMIUM_ALLOW_INSECURE_LOCALHOST=false
 CHROMIUM_IGNORE_CERTIFICATE_ERRORS=false
 CHROMIUM_DISABLE_WEB_SECURITY=false
 CHROMIUM_ALLOW_FILE_ACCESS_FROM_FILES=false
+CHROMIUM_HOST_RESOLVER_RULES=
 CHROMIUM_PROXY_SERVER=
 CHROMIUM_ALLOW_LIST=
 CHROMIUM_DENY_LIST="^file:///[^tmp].*"
@@ -51,7 +53,8 @@ PROMETHEUS_NAMESPACE=gotenberg
 PROMETHEUS_COLLECT_INTERVAL=1s
 PROMETHEUS_DISABLE_ROUTE_LOGGING=false
 PROMETHEUS_DISABLE_COLLECT=false
-UNOCONV_DISABLE_LISTENER=false
+UNO_LISTENER_START_TIMEOUT=10s
+UNO_LISTENER_RESTART_THRESHOLD=10
 WEBHOOK_ALLOW_LIST=
 WEBHOOK_DENY_LIST=
 WEBHOOK_ERROR_ALLOW_LIST=
@@ -76,9 +79,11 @@ run: ## Start a Gotenberg container
 	--api-trace-header=$(API_TRACE_HEADER) \
 	--api-disable-health-check-logging=$(API_DISABLE_HEALTH_CHECK_LOGGING) \
 	--chromium-incognito=$(CHROMIUM_INCOGNITO) \
+	--chromium-allow-insecure-localhost=$(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=$(CHROMIUM_DENY_LIST) \
@@ -93,7 +98,8 @@ run: ## Start a Gotenberg container
 	--prometheus-collect-interval=$(PROMETHEUS_COLLECT_INTERVAL) \
 	--prometheus-disable-route-logging=$(PROMETHEUS_DISABLE_ROUTE_LOGGING) \
 	--prometheus-disable-collect=$(PROMETHEUS_DISABLE_COLLECT) \
-	--unoconv-disable-listener=$(UNOCONV_DISABLE_LISTENER) \
+	--uno-listener-start-timeout=$(UNO_LISTENER_START_TIMEOUT) \
+	--uno-listener-restart-threshold=$(UNO_LISTENER_RESTART_THRESHOLD) \
 	--webhook-allow-list=$(WEBHOOK_ALLOW_LIST) \
 	--webhook-deny-list=$(WEBHOOK_DENY_LIST) \
 	--webhook-error-allow-list=$(WEBHOOK_ERROR_ALLOW_LIST) \
--- a/README.md
+++ b/README.md
@@ -7,8 +7,8 @@

 ---

-Gotenberg provides a developer-friendly API to interact with powerful tools like Chromium and LibreOffice to convert many
-documents (HTML, Markdown, Word, Excel, etc.) to PDF, transform them, merge them, and more!
+Gotenberg provides a developer-friendly API to interact with powerful tools like Chromium and LibreOffice for converting 
+numerous document formats (HTML, Markdown, Word, Excel, etc.) into PDF files, and more!

 ## Quick Start

@@ -43,4 +43,3 @@ Head to the [documentation](https://gotenberg.dev/docs/about) to learn how to in
 [![Continuous Integration](https://github.com/gotenberg/gotenberg/actions/workflows/continuous_integration.yml/badge.svg)](https://github.com/gotenberg/gotenberg/actions/workflows/continuous_integration.yml)
 [![Go Reference](https://pkg.go.dev/badge/github.com/gotenberg/gotenberg.svg)](https://pkg.go.dev/github.com/gotenberg/gotenberg/v7)
 [![Codecov](https://codecov.io/gh/gotenberg/gotenberg/branch/main/graph/badge.svg)](https://codecov.io/gh/gotenberg/gotenberg)
-[![Go Report Card](https://goreportcard.com/badge/github.com/gotenberg/gotenberg)](https://goreportcard.com/report/gotenberg/gotenberg)
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -64,10 +64,10 @@ RUN \
    mkdir /home/gotenberg &&\
    chown gotenberg: /home/gotenberg &&\
    # Install dependencies required for the next instructions or debugging.
-    # Note: procps for "top" command (useful when debugging processes).
    # Note: tini is a helper for reaping zombie processes.
    apt-get update -qq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends curl gnupg procps tini python3 default-jre-headless &&\
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends curl gnupg htop tini python3 default-jre-headless &&\
+    ln -s /usr/bin/htop /usr/bin/top &&\
    # Install fonts.
    # Credits:
    # https://github.com/arachnys/athenapdf/blob/master/cli/Dockerfile.
@@ -103,6 +103,7 @@ RUN \
    fonts-liberation \
    fonts-liberation2 \
    fonts-linuxlibertine \
+    fonts-noto-cjk \
    fonts-noto-core \
    fonts-noto-mono \
    fonts-noto-ui-core \
@@ -117,24 +118,26 @@ RUN \
    # Install Google Chrome / Chromium.
    /tmp/install-chromium.sh &&\
    # Install LibreOffice.
-    # Note: we use the sid distribution to get the latest LibreOffice version.
-    # See https://github.com/gotenberg/gotenberg/pull/322.
-    echo "deb https://httpredir.debian.org/debian/ sid main contrib non-free" >> /etc/apt/sources.list &&\
+    # Note: we use the bullseye-backports distribution to get the latest LibreOffice version.
+    # See:
+    # https://github.com/gotenberg/gotenberg/pull/322.
+    # https://github.com/gotenberg/gotenberg/issues/403.
+    echo "deb https://httpredir.debian.org/debian/ bullseye-backports main contrib non-free" >> /etc/apt/sources.list &&\
    apt-get update -qq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends -t sid libreoffice &&\
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends -t bullseye-backports libreoffice &&\
    # Download unoconv (Python script).
    curl -Ls https://raw.githubusercontent.com/dagwieers/unoconv/master/unoconv -o /usr/bin/unoconv &&\
    chmod +x /usr/bin/unoconv &&\
    # unoconv will look for the Python binary, which has to be at version 3.
    ln -s /usr/bin/python3 /usr/bin/python &&\
    # Download PDFtk.
-    # See https://github.com/gotenberg/gotenberg/pull/273.
-    curl -o /usr/bin/pdftk-all.jar "https://gitlab.com/pdftk-java/pdftk/-/jobs/$PDFTK_VERSION/artifacts/raw/build/libs/pdftk-all.jar" &&\
+    # See https://github.com/gotenberg/gotenberg/pull/273. \
+    curl -o /usr/bin/pdftk-all.jar "https://gitlab.com/api/v4/projects/5024297/packages/generic/pdftk-java/$PDFTK_VERSION/pdftk-all.jar" &&\
    chmod a+x /usr/bin/pdftk-all.jar &&\
    # Download QPDF.
    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends qpdf &&\
    # See https://github.com/nextcloud/docker/issues/380.
-    mkdir -p /usr/share/man/man1mkdir -p /usr/share/man/man1 &&\
+    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.
@@ -154,6 +157,7 @@ COPY --from=builder /home/gotenberg /usr/bin/
 ENV GC_EXCLUDE_SUBSTR "hsperfdata_root,hsperfdata_gotenberg"
 ENV CHROMIUM_BIN_PATH /usr/bin/chromium
 ENV UNOCONV_BIN_PATH /usr/bin/unoconv
+ENV LIBREOFFICE_BIN_PATH /usr/lib/libreoffice/program/soffice.bin
 ENV PDFTK_BIN_PATH /usr/bin/pdftk
 ENV QPDF_BIN_PATH /usr/bin/qpdf

@@ -164,4 +168,4 @@ WORKDIR /home/gotenberg
 EXPOSE 3000

 ENTRYPOINT [ "/usr/bin/tini", "--" ]
-CMD [ "gotenberg" ]
+CMD [ "gotenberg" ]
--- a/go.mod
+++ b/go.mod
@@ -1,40 +1,40 @@
 module github.com/gotenberg/gotenberg/v7

-go 1.17
+go 1.19

 require (
 	github.com/alexliesenfeld/health v0.6.0
 	github.com/andybalholm/brotli v1.0.4 // indirect
-	github.com/chromedp/cdproto v0.0.0-20211205231339-d2673e93eee4
-	github.com/chromedp/chromedp v0.7.6
+	github.com/chromedp/cdproto v0.0.0-20221011223153-490dc4d81f7c
+	github.com/chromedp/chromedp v0.8.6
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/uuid v1.3.0
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
-	github.com/hashicorp/go-retryablehttp v0.7.0
-	github.com/klauspost/compress v1.13.6 // indirect
+	github.com/hashicorp/go-retryablehttp v0.7.1
+	github.com/klauspost/compress v1.15.11 // indirect
 	github.com/klauspost/pgzip v1.2.5 // indirect
-	github.com/labstack/echo/v4 v4.6.1
-	github.com/labstack/gommon v0.3.1
-	github.com/mattn/go-isatty v0.0.14 // indirect
+	github.com/labstack/echo/v4 v4.9.1
+	github.com/labstack/gommon v0.4.0
+	github.com/mattn/go-isatty v0.0.16 // indirect
 	github.com/mholt/archiver/v3 v3.5.1
-	github.com/microcosm-cc/bluemonday v1.0.16
-	github.com/nwaples/rardecode v1.1.2 // indirect
-	github.com/pdfcpu/pdfcpu v0.3.12
-	github.com/pierrec/lz4/v4 v4.1.12 // indirect
-	github.com/prometheus/client_golang v1.11.0
+	github.com/microcosm-cc/bluemonday v1.0.21
+	github.com/nwaples/rardecode v1.1.3 // indirect
+	github.com/pdfcpu/pdfcpu v0.3.13
+	github.com/pierrec/lz4/v4 v4.1.17 // indirect
+	github.com/prometheus/client_golang v1.13.0
 	github.com/russross/blackfriday/v2 v2.1.0
 	github.com/spf13/pflag v1.0.5
 	github.com/ulikunitz/xz v0.5.10 // indirect
-	go.uber.org/atomic v1.9.0 // indirect
-	go.uber.org/multierr v1.7.0
-	go.uber.org/zap v1.19.1
-	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect
-	golang.org/x/image v0.0.0-20211028202545-6944b10bf410 // indirect
-	golang.org/x/net v0.0.0-20210913180222-943fd674d43e
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	golang.org/x/sys v0.0.0-20211124211545-fe61309f8881 // indirect
-	golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b
-	golang.org/x/text v0.3.7
+	go.uber.org/atomic v1.10.0 // indirect
+	go.uber.org/multierr v1.8.0
+	go.uber.org/zap v1.23.0
+	golang.org/x/crypto v0.1.0 // indirect
+	golang.org/x/image v0.1.0 // indirect
+	golang.org/x/net v0.1.0
+	golang.org/x/sync v0.1.0
+	golang.org/x/sys v0.1.0 // indirect
+	golang.org/x/term v0.1.0
+	golang.org/x/text v0.4.0
 )

 require (
@@ -52,15 +52,15 @@ require (
 	github.com/hhrutter/tiff v0.0.0-20190829141212-736cae8d0bc7 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
-	github.com/mattn/go-colorable v0.1.12 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.32.1 // indirect
-	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	github.com/valyala/fasttemplate v1.2.1 // indirect
+	github.com/valyala/fasttemplate v1.2.2 // indirect
 	github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -46,7 +46,6 @@ github.com/andybalholm/brotli v1.0.4/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHG
 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/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
-github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
@@ -55,11 +54,10 @@ github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
 github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/chromedp/cdproto v0.0.0-20211126220118-81fa0469ad77/go.mod h1:At5TxYYdxkbQL0TSefRjhLE3Q0lgvqKKMSFUglJ7i1U=
-github.com/chromedp/cdproto v0.0.0-20211205231339-d2673e93eee4 h1:St4rQbn3gGWL59ygb4NBxchIeAIW0CTz5Kw4m5JTemU=
-github.com/chromedp/cdproto v0.0.0-20211205231339-d2673e93eee4/go.mod h1:At5TxYYdxkbQL0TSefRjhLE3Q0lgvqKKMSFUglJ7i1U=
-github.com/chromedp/chromedp v0.7.6 h1:2juGaktzjwULlsn+DnvIZXFUckEp5xs+GOBroaea+jA=
-github.com/chromedp/chromedp v0.7.6/go.mod h1:ayT4YU/MGAALNfOg9gNrpGSAdnU51PMx+FCeuT1iXzo=
+github.com/chromedp/cdproto v0.0.0-20221011223153-490dc4d81f7c h1:JQvTh3Lqw0aGKFu/roG/DTMgqVCmSE6aVOegf+mMNrY=
+github.com/chromedp/cdproto v0.0.0-20221011223153-490dc4d81f7c/go.mod h1:5Y4sD/eXpwrChIuxhSr/G20n9CdbCmoerOHnuAf0Zr0=
+github.com/chromedp/chromedp v0.8.6 h1:KobeeqR2dpfKSG1prS3Y6+FbffMmGC6xmAobRXA9QEQ=
+github.com/chromedp/chromedp v0.8.6/go.mod h1:nBYHoD6YSNzrr82cIeuOzhw1Jo/s2o0QQ+ifTeoCZ+c=
 github.com/chromedp/sysutil v1.0.0 h1:+ZxhTpfpZlmchB58ih/LBHX52ky7w2VhQVKQMucy3Ic=
 github.com/chromedp/sysutil v1.0.0/go.mod h1:kgWmDdq8fTzXYcKIBqIYvRRTnYb9aNS9moAV0xufSww=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
@@ -83,9 +81,11 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
+github.com/go-kit/log v0.2.0/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
+github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
 github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
@@ -94,7 +94,6 @@ github.com/gobwas/pool v0.2.1/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6Wezm
 github.com/gobwas/ws v1.1.0 h1:7RFti/xnNkMJnrK7D1yQ/iCIB5OrrY/54/H930kIbHA=
 github.com/gobwas/ws v1.1.0/go.mod h1:nzvNcVha5eUziGrbxFCo6qFIojQHjJV5cLYIbezhfL0=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/golang-jwt/jwt v3.2.2+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzqecmYZeUEB8OUGHkxJ+I=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -136,8 +135,8 @@ github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -160,8 +159,8 @@ github.com/hashicorp/go-cleanhttp v0.5.2 h1:035FKYIWjmULyFRBKPs8TBQoi0x6d9G4xc9n
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@@ -176,6 +175,7 @@ github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX
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@@ -183,8 +183,8 @@ github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8
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@@ -196,45 +196,42 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
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@@ -244,24 +241,29 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
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@@ -276,46 +278,45 @@ github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
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 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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@@ -329,9 +330,8 @@ golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMk
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
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+golang.org/x/image v0.1.0/go.mod h1:iyPr49SD/G/TBxYVB/9RRtGUT5eNbo2u4NamWeQcD5c=
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@@ -350,7 +350,7 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
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-golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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@@ -380,17 +380,19 @@ golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81R
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@@ -400,13 +402,13 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
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 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -415,13 +417,11 @@ golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -439,32 +439,35 @@ golang.org/x/sys v0.0.0-20200803210538-64077c9b5642/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201207223542-d4d67f95c62d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210910150752-751e447fb3d0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211103235746-7861aae1554b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20211124211545-fe61309f8881 h1:TyHqChC80pFkXWraUUf6RuB5IqFdQieMLwwCJokV2pc=
-golang.org/x/sys v0.0.0-20211124211545-fe61309f8881/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b h1:9zKuko04nR4gjZ4+DNjHqRlAJqbJETHwiNKDqTfOjfE=
-golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.1.0 h1:g6Z6vPFA9dYBAF7DWcH6sCcOntplXsDKcliusYijMlw=
+golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.4.0 h1:BrVqGRd7+k1DiOgtnFvAkoQEWQvBc25ouMJM6429SFg=
+golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/time v0.0.0-20201208040808-7e3f01d25324/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
@@ -505,11 +508,10 @@ golang.org/x/tools v0.0.0-20200618134242-20370b0cb4b2/go.mod h1:EkVYQZoAsY45+roY
 golang.org/x/tools v0.0.0-20200729194436-6467de6f59a7/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
-golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
@@ -586,8 +588,8 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
-google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -598,13 +600,12 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
--- a/pkg/gotenberg/cmd.go
+++ b/pkg/gotenberg/cmd.go
@@ -73,22 +73,37 @@ func (cmd Cmd) Start() error {
 	return nil
 }

+// Wait waits for the command to complete. It should be called when using the
+// Start method, so that the command does not leak zombies.
+func (cmd Cmd) Wait() error {
+	err := cmd.process.Wait()
+	if err != nil {
+		return fmt.Errorf("wait for unix process: %w", err)
+	}
+
+	return nil
+}
+
 // Exec executes the command and wait for its completion or until the context
 // is done. In any case, it kills the unix process and all its children.
-func (cmd Cmd) Exec() error {
+func (cmd Cmd) Exec() (int, error) {
 	if cmd.ctx == nil {
-		return errors.New("nil context")
+		return 10, errors.New("nil context")
 	}

 	err := cmd.Start()
 	if err != nil {
-		return fmt.Errorf("start command: %w", err)
+		if cmd.process.ProcessState == nil {
+			return 131, fmt.Errorf("start command: %w", err)
+		}
+
+		return cmd.process.ProcessState.ExitCode(), fmt.Errorf("start command: %w", err)
 	}

 	errChan := make(chan error, 1)

 	go func() {
-		errChan <- cmd.process.Wait()
+		errChan <- cmd.Wait()
 	}()

 	select {
@@ -99,17 +114,21 @@ func (cmd Cmd) Exec() error {
 		}

 		if err == nil {
-			return nil
+			return 0, nil
 		}

-		return fmt.Errorf("unix process error: %w", err)
+		if cmd.process.ProcessState == nil {
+			return 131, fmt.Errorf("unix process error: %w", err)
+		}
+
+		return cmd.process.ProcessState.ExitCode(), fmt.Errorf("unix process error: %w", err)
 	case <-cmd.ctx.Done():
 		errProc := cmd.Kill()
 		if errProc != nil {
 			cmd.logger.Error(errProc.Error())
 		}

-		return fmt.Errorf("context done: %w", cmd.ctx.Err())
+		return 62, fmt.Errorf("context done: %w", cmd.ctx.Err())
 	}
 }

--- a/pkg/gotenberg/cmd_test.go
+++ b/pkg/gotenberg/cmd_test.go
@@ -12,209 +12,313 @@ func TestCommand(t *testing.T) {
 	cmd := Command(zap.NewNop(), "foo")

 	if !cmd.process.SysProcAttr.Setpgid {
-		t.Error("expected Setpgid to be true")
+		t.Error("expected cmd.process.SysProcAttr.Setpgid to be true")
 	}
 }

 func TestCommandContext(t *testing.T) {
-	for i, tc := range []struct {
-		ctx       context.Context
-		expectErr bool
+	tests := []struct {
+		name                    string
+		ctx                     context.Context
+		expectCommandContextErr bool
 	}{
 		{
-			ctx:       nil,
-			expectErr: true,
+			name: "nominal behavior",
+			ctx:  context.Background(),
 		},
 		{
-			ctx: context.TODO(),
+			name:                    "nil context",
+			expectCommandContextErr: true,
 		},
-	} {
-		cmd, err := CommandContext(tc.ctx, zap.NewNop(), "foo")
+	}

-		if err == nil && !cmd.process.SysProcAttr.Setpgid {
-			t.Fatalf("test %d: expected Setpgid to be true", i)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			cmd, err := CommandContext(tc.ctx, zap.NewNop(), "foo")

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+			if err == nil && !cmd.process.SysProcAttr.Setpgid {
+				t.Fatal("expected cmd.process.SysProcAttr.Setpgid to be true")
+			}

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectCommandContextErr && err == nil {
+				t.Error("expected error from CommandContext(), but got none")
+			}
+
+			if !tc.expectCommandContextErr && err != nil {
+				t.Errorf("expected no error from CommandContext(), but got: %v", err)
+			}
+		})
 	}
 }

 func TestCmd_Start(t *testing.T) {
-	for i, tc := range []struct {
-		cmd       Cmd
-		expectErr bool
+	tests := []struct {
+		name           string
+		cmd            Cmd
+		expectStartErr bool
 	}{
 		{
-			cmd:       Command(zap.NewNop(), "foo"),
-			expectErr: true,
+			name: "nominal behavior",
+			cmd:  Command(zap.NewNop(), "echo", "Hello", "World"),
 		},
 		{
-			cmd: Command(zap.NewNop(), "echo", "Hello", "World"),
+			name:           "start error",
+			cmd:            Command(zap.NewNop(), "foo"),
+			expectStartErr: true,
 		},
-	} {
-		err := tc.cmd.Start()
+	}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.cmd.Start()

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectStartErr && err == nil {
+				t.Error("expected error from cmd.Start(), but got none")
+			}
+
+			if !tc.expectStartErr && err != nil {
+				t.Errorf("expected no error from cmd.Start(), but got: %v", err)
+			}
+		})
+	}
+}
+
+func TestCmd_Wait(t *testing.T) {
+	tests := []struct {
+		name          string
+		cmd           Cmd
+		expectWaitErr bool
+	}{
+		{
+			name: "nominal behavior",
+			cmd: func() Cmd {
+				cmd := Command(zap.NewNop(), "echo", "Hello", "World")
+
+				err := cmd.Start()
+				if err != nil {
+					t.Fatalf("expected no error from cmd.Start(), but got: %v", err)
+				}
+
+				return cmd
+			}(),
+		},
+		{
+			name: "wait error",
+			cmd: func() Cmd {
+				cmd := Command(zap.NewNop(), "echo", "Hello", "World")
+
+				err := cmd.Start()
+				if err != nil {
+					t.Fatalf("expected no error from cmd.Start(), but got: %v", err)
+				}
+
+				err = cmd.Kill()
+				if err != nil {
+					t.Fatalf("expected no error from cmd.Kill(), but got: %v", err)
+				}
+
+				return cmd
+			}(),
+			expectWaitErr: true,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.cmd.Wait()
+
+			if tc.expectWaitErr && err == nil {
+				t.Error("expected error from cmd.Wait(), but got none")
+			}
+
+			if !tc.expectWaitErr && err != nil {
+				t.Errorf("expected no error from cmd.Wait(), but got: %v", err)
+			}
+		})
 	}
 }

 func TestCmd_Exec(t *testing.T) {
-	for i, tc := range []struct {
-		cmd       Cmd
-		timeout   time.Duration
-		expectErr bool
+	tests := []struct {
+		name          string
+		cmd           Cmd
+		timeout       time.Duration
+		expectExecErr bool
 	}{
 		{
-			cmd:       Command(zap.NewNop(), "foo"),
-			expectErr: true,
+			name: "nominal behavior",
+			cmd: func() Cmd {
+				cmd, err := CommandContext(context.Background(), zap.NewNop(), "echo", "Hello", "World")
+				if err != nil {
+					t.Fatalf("expected no error from CommandContext(), but got: %v", err)
+				}
+
+				return cmd
+			}(),
 		},
 		{
-			cmd:       Command(zap.NewNop(), "foo"),
-			timeout:   time.Duration(5) * time.Second,
-			expectErr: true,
+			name:          "nil context",
+			cmd:           Command(zap.NewNop(), "echo", "Hello", "World"),
+			expectExecErr: true,
 		},
 		{
-			cmd:     Command(zap.NewNop(), "echo", "Hello", "World"),
-			timeout: time.Duration(5) * time.Second,
+			name: "start error",
+			cmd: func() Cmd {
+				cmd, err := CommandContext(context.Background(), zap.NewNop(), "foo")
+				if err != nil {
+					t.Fatalf("expected no error from CommandContext(), but got: %v", err)
+				}
+
+				return cmd
+			}(),
+			expectExecErr: true,
 		},
 		{
-			cmd:       Command(zap.NewNop(), "sleep", "3"),
-			timeout:   time.Duration(2) * time.Second,
-			expectErr: true,
+			name:          "context done",
+			cmd:           Command(zap.NewNop(), "sleep", "2"),
+			timeout:       time.Duration(1) * time.Second,
+			expectExecErr: true,
 		},
-	} {
-		if tc.timeout > 0 {
-			ctx, cancel := context.WithTimeout(context.TODO(), tc.timeout)
-			defer cancel()
+	}

-			tc.cmd.ctx = ctx
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			if tc.timeout > 0 {
+				ctx, cancel := context.WithTimeout(context.TODO(), tc.timeout)
+				defer cancel()

-		err := tc.cmd.Exec()
+				tc.cmd.ctx = ctx
+			}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+			_, err := tc.cmd.Exec()

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectExecErr && err == nil {
+				t.Error("expected error from cmd.Exec(), but got none")
+			}
+
+			if !tc.expectExecErr && err != nil {
+				t.Errorf("expected no error from cmd.Exec(), but got: %v", err)
+			}
+		})
 	}
 }

 func TestCmd_pipeOutput(t *testing.T) {
-	for i, tc := range []struct {
-		cmd       Cmd
-		run       bool
-		expectErr bool
+	tests := []struct {
+		name                string
+		cmd                 Cmd
+		run                 bool
+		expectPipeOutputErr bool
 	}{
 		{
-			cmd: Command(zap.NewNop(), "echo", "Hello", "World"),
+			name: "nominal behavior",
+			cmd:  Command(zap.NewExample(), "echo", "Hello", "World"),
+			run:  true,
 		},
 		{
+			name: "no debug, no pipe",
+			cmd:  Command(zap.NewNop(), "echo", "Hello", "World"),
+		},
+		{
+			name: "stdout already piped",
 			cmd: func() Cmd {
 				cmd := Command(zap.NewExample(), "echo", "Hello", "World")
+
 				_, err := cmd.process.StdoutPipe()
-
 				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
+					t.Fatalf("expected no error from cmd.process.StdoutPipe(), but got: %v", err)
 				}

 				return cmd
 			}(),
-			expectErr: true,
+			expectPipeOutputErr: true,
 		},
 		{
+			name: "stderr already piped",
 			cmd: func() Cmd {
 				cmd := Command(zap.NewExample(), "echo", "Hello", "World")
-				_, err := cmd.process.StderrPipe()

+				_, err := cmd.process.StderrPipe()
 				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
+					t.Fatalf("expected no error from cmd.process.StderrPipe(), but got: %v", err)
 				}

 				return cmd
 			}(),
-			expectErr: true,
+			expectPipeOutputErr: true,
 		},
-		{
-			cmd: Command(zap.NewExample(), "echo", "Hello", "World"),
-			run: true,
-		},
-	} {
-		err := tc.cmd.pipeOutput()
+	}

-		if tc.run {
-			errStart := tc.cmd.process.Start()
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.cmd.pipeOutput()

-			if errStart != nil {
-				t.Fatalf("test %d: expected no error but got: %v", i, err)
+			if tc.run {
+				errStart := tc.cmd.process.Start()
+				if errStart != nil {
+					t.Fatalf("expected no error from tc.cmd.process.Start(), but got: %v", errStart)
+				}
 			}
-		}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+			if tc.expectPipeOutputErr && err == nil {
+				t.Error("expected error from cmd.pipeOutput(), but got none")
+			}

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if !tc.expectPipeOutputErr && err != nil {
+				t.Errorf("expected no error from cmd.pipeOutput(), but got: %v", err)
+			}
+		})
 	}
 }

 func TestCmd_Kill(t *testing.T) {
-	for i, tc := range []struct {
-		cmd       Cmd
-		expectErr bool
+	tests := []struct {
+		name string
+		cmd  Cmd
 	}{
 		{
-			cmd: Cmd{logger: zap.NewNop()},
-		},
-		{
+			name: "nominal behavior",
 			cmd: func() Cmd {
 				cmd := Command(zap.NewNop(), "sleep", "60")
-				err := cmd.process.Start()

+				err := cmd.process.Start()
 				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
+					t.Fatalf("expected no error from cmd.process.Start(), but got: %v", err)
 				}

 				return cmd
 			}(),
 		},
 		{
+			name: "no process",
+			cmd:  Cmd{logger: zap.NewNop()},
+		},
+		{
+			name: "process already killed",
 			cmd: func() Cmd {
-				cmd := Command(zap.NewNop(), "echo", "Hello", "World")
-				err := cmd.process.Run()
+				cmd := Command(zap.NewNop(), "sleep", "60")

+				err := cmd.process.Start()
 				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
+					t.Fatalf("expected no error from cmd.process.Start(), but got: %v", err)
+				}
+
+				err = cmd.Kill()
+				if err != nil {
+					t.Fatalf("expected no error from cmd.Kill(), but got: %v", err)
 				}

 				return cmd
 			}(),
 		},
-	} {
-		err := tc.cmd.Kill()
+	}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.cmd.Kill()
+			if err != nil {
+				t.Errorf("expected no error from cmd.Kill(), but got: %v", err)
+			}
+		})
 	}
 }
--- a/pkg/gotenberg/mocks.go
+++ b/pkg/gotenberg/mocks.go
@@ -0,0 +1,66 @@
+package gotenberg
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+)
+
+// ModuleMock is a mock for the Module interface.
+type ModuleMock struct {
+	DescriptorMock func() ModuleDescriptor
+}
+
+func (mod ModuleMock) Descriptor() ModuleDescriptor {
+	return mod.DescriptorMock()
+}
+
+// ValidatorMock is a mock for the Validator interface.
+type ValidatorMock struct {
+	ValidateMock func() error
+}
+
+func (mod ValidatorMock) Validate() error {
+	return mod.ValidateMock()
+}
+
+// PDFEngineMock is a mock for the PDFEngine interface.
+type PDFEngineMock struct {
+	MergeMock   func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error
+	ConvertMock func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error
+}
+
+func (engine PDFEngineMock) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+	return engine.MergeMock(ctx, logger, inputPaths, outputPath)
+}
+
+func (engine PDFEngineMock) Convert(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+	return engine.ConvertMock(ctx, logger, format, inputPath, outputPath)
+}
+
+// PDFEngineProviderMock is a mock for the PDFEngineProvider interface.
+type PDFEngineProviderMock struct {
+	PDFEngineMock func() (PDFEngine, error)
+}
+
+func (provider PDFEngineProviderMock) PDFEngine() (PDFEngine, error) {
+	return provider.PDFEngineMock()
+}
+
+// LoggerProviderMock is a mock for the LoggerProvider interface.
+type LoggerProviderMock struct {
+	LoggerMock func(mod Module) (*zap.Logger, error)
+}
+
+func (provider LoggerProviderMock) Logger(mod Module) (*zap.Logger, error) {
+	return provider.LoggerMock(mod)
+}
+
+// Interface guards.
+var (
+	_ Module            = (*ModuleMock)(nil)
+	_ Validator         = (*ValidatorMock)(nil)
+	_ PDFEngine         = (*PDFEngineMock)(nil)
+	_ PDFEngineProvider = (*PDFEngineProviderMock)(nil)
+	_ LoggerProvider    = (*LoggerProviderMock)(nil)
+)
--- a/pkg/gotenberg/mocks_test.go
+++ b/pkg/gotenberg/mocks_test.go
@@ -0,0 +1,82 @@
+package gotenberg
+
+import (
+	"context"
+	"testing"
+
+	"go.uber.org/zap"
+)
+
+func TestModuleMock(t *testing.T) {
+	mock := ModuleMock{
+		DescriptorMock: func() ModuleDescriptor {
+			return ModuleDescriptor{ID: "foo", New: func() Module {
+				return nil
+			}}
+		},
+	}
+
+	if mock.Descriptor().ID != "foo" {
+		t.Errorf("expected ID '%s' from mock.Descriptor(), but got '%s'", "foo", mock.Descriptor().ID)
+	}
+}
+
+func TestValidatorMock(t *testing.T) {
+	mock := ValidatorMock{
+		ValidateMock: func() error {
+			return nil
+		},
+	}
+
+	err := mock.Validate()
+	if err != nil {
+		t.Errorf("expected no error from mock.Validate(), but got: %v", err)
+	}
+}
+
+func TestPDFEngineMock(t *testing.T) {
+	mock := PDFEngineMock{
+		MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+			return nil
+		},
+		ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+			return nil
+		},
+	}
+
+	err := mock.Merge(context.Background(), zap.NewNop(), nil, "")
+	if err != nil {
+		t.Errorf("expected no error from mock.Merge(), but got: %v", err)
+	}
+
+	err = mock.Convert(context.Background(), zap.NewNop(), "", "", "")
+	if err != nil {
+		t.Errorf("expected no error from mock.Convert(), but got: %v", err)
+	}
+}
+
+func TestPDFEngineProvider(t *testing.T) {
+	mock := PDFEngineProviderMock{
+		PDFEngineMock: func() (PDFEngine, error) {
+			return PDFEngineMock{}, nil
+		},
+	}
+
+	_, err := mock.PDFEngine()
+	if err != nil {
+		t.Errorf("expected no error from mock.PDFEngine(), but got: %v", err)
+	}
+}
+
+func TestLoggerProviderMock(t *testing.T) {
+	mock := LoggerProviderMock{
+		LoggerMock: func(mod Module) (*zap.Logger, error) {
+			return nil, nil
+		},
+	}
+
+	_, err := mock.Logger(ModuleMock{})
+	if err != nil {
+		t.Errorf("expected no error from mock.Logger(), but got: %v", err)
+	}
+}
--- a/pkg/modules/api/api.go
+++ b/pkg/modules/api/api.go
@@ -102,28 +102,28 @@ const (
 // Middleware is a middleware which can be added to the API's middlewares
 // chain.
 //
-//  middleware := Middleware{
-//    Handler: func() echo.MiddlewareFunc {
-//      return func(next echo.HandlerFunc) echo.HandlerFunc {
-//        return func(c echo.Context) error {
-//          rootPath := c.Get("rootPath").(string)
-//          healthURI := fmt.Sprintf("%shealth", rootPath)
+//	middleware := Middleware{
+//	  Handler: func() echo.MiddlewareFunc {
+//	    return func(next echo.HandlerFunc) echo.HandlerFunc {
+//	      return func(c echo.Context) error {
+//	        rootPath := c.Get("rootPath").(string)
+//	        healthURI := fmt.Sprintf("%shealth", rootPath)
 //
-//          // Skip the middleware if health check URI.
-//          if c.Request().RequestURI == healthURI {
-//            // Call the next middleware in the chain.
-//            return next(c)
-//          }
+//	        // Skip the middleware if health check URI.
+//	        if c.Request().RequestURI == healthURI {
+//	          // Call the next middleware in the chain.
+//	          return next(c)
+//	        }
 //
-//          // Your middleware process.
-//          // ...
+//	        // Your middleware process.
+//	        // ...
 //
-//          // Call the next middleware in the chain.
-//          return next(c)
-//        }
-//      }
-//    }(),
-//  }
+//	        // Call the next middleware in the chain.
+//	        return next(c)
+//	      }
+//	    }
+//	  }(),
+//	}
 type Middleware struct {
 	// Stack tells in which stack the middleware should be located.
 	// Default to DefaultStack.
--- a/pkg/modules/api/context.go
+++ b/pkg/modules/api/context.go
@@ -276,71 +276,3 @@ func (ctx Context) OutputFilename(outputPath string) string {

 	return fmt.Sprintf("%s%s", filename, filepath.Ext(outputPath))
 }
-
-// MockContext is a helper for tests.
-//
-//  ctx := &api.MockContext{Context: &api.Context{}}
-type MockContext struct {
-	*Context
-}
-
-// SetDirPath sets the context's working directory path.
-//
-//  ctx := &api.MockContext{Context: &api.Context{}}
-//  ctx.SetDirPath("/foo")
-func (ctx *MockContext) SetDirPath(path string) {
-	ctx.dirPath = path
-}
-
-// SetValues sets the values.
-//
-//  ctx := &api.MockContext{Context: &api.Context{}}
-//  ctx.SetValues(map[string][]string{
-//    "url": {
-//      "foo",
-//    },
-//  })
-func (ctx *MockContext) SetValues(values map[string][]string) {
-	ctx.values = values
-}
-
-// SetFiles sets the files.
-//
-//  ctx := &api.MockContext{Context: &api.Context{}}
-//  ctx.SetFiles(map[string]string{
-//    "foo": "/foo",
-//  })
-func (ctx *MockContext) SetFiles(files map[string]string) {
-	ctx.files = files
-}
-
-// SetCancelled sets if the context is cancelled or not.
-//
-//  ctx := &api.MockContext{Context: &api.Context{}}
-//  ctx.SetCancelled(true)
-func (ctx *MockContext) SetCancelled(cancelled bool) {
-	ctx.cancelled = cancelled
-}
-
-// OutputPaths returns the registered output paths.
-//  ctx := &api.MockContext{Context: &api.Context{}}
-//  outputPaths := ctx.OutputPaths()
-func (ctx MockContext) OutputPaths() []string {
-	return ctx.outputPaths
-}
-
-// SetLogger sets the logger.
-//
-//  ctx := &api.MockContext{Context: &api.Context{}}
-//  ctx.SetLogger(zap.NewNop())
-func (ctx *MockContext) SetLogger(logger *zap.Logger) {
-	ctx.logger = logger
-}
-
-// SetEchoContext sets the echo.Context.
-//
-//  ctx := &api.MockContext{Context: &api.Context{}}
-//  ctx.setEchoContext(c)
-func (ctx *MockContext) SetEchoContext(c echo.Context) {
-	ctx.Context.echoCtx = c
-}
--- a/pkg/modules/api/context_test.go
+++ b/pkg/modules/api/context_test.go
@@ -334,99 +334,3 @@ func TestContext_OutputFilename(t *testing.T) {
 		}
 	}
 }
-
-func TestMockContext_SetDirPath(t *testing.T) {
-	mock := &MockContext{&Context{}}
-	mock.SetDirPath("/foo")
-
-	actual := mock.dirPath
-	expect := "/foo"
-
-	if actual != expect {
-		t.Errorf("expected '%s' but got '%s'", expect, actual)
-	}
-}
-
-func TestMockContext_SetValues(t *testing.T) {
-	mock := &MockContext{&Context{}}
-	mock.SetValues(map[string][]string{
-		"foo": {"foo"},
-	})
-
-	actual := mock.values
-	expect := map[string][]string{
-		"foo": {"foo"},
-	}
-
-	if !reflect.DeepEqual(actual, expect) {
-		t.Errorf("expected %+v but got: %+v", expect, actual)
-	}
-}
-
-func TestMockContext_SetFiles(t *testing.T) {
-	mock := &MockContext{&Context{}}
-	mock.SetFiles(map[string]string{
-		"foo": "/foo",
-	})
-
-	actual := mock.files
-	expect := map[string]string{
-		"foo": "/foo",
-	}
-
-	if !reflect.DeepEqual(actual, expect) {
-		t.Errorf("expected %+v but got: %+v", expect, actual)
-	}
-}
-
-func TestMockContext_SetCancelled(t *testing.T) {
-	mock := &MockContext{&Context{}}
-	mock.SetCancelled(true)
-
-	actual := mock.cancelled
-
-	if !actual {
-		t.Errorf("expected %t but got %t", true, actual)
-	}
-}
-
-func TestMockContext_OutputPaths(t *testing.T) {
-	mock := MockContext{
-		&Context{
-			outputPaths: []string{"/foo"},
-		},
-	}
-
-	actual := mock.OutputPaths()
-	expect := []string{"/foo"}
-
-	if !reflect.DeepEqual(actual, expect) {
-		t.Errorf("expected %+v but got: %+v", expect, actual)
-	}
-}
-
-func TestMockContext_SetLogger(t *testing.T) {
-	mock := MockContext{&Context{}}
-
-	expect := zap.NewNop()
-	mock.SetLogger(expect)
-
-	actual := mock.logger
-
-	if actual != expect {
-		t.Errorf("expected %v but got %v", expect, actual)
-	}
-}
-
-func TestMockContext_SetEchoContext(t *testing.T) {
-	mock := MockContext{&Context{}}
-
-	expect := echo.New().NewContext(nil, nil)
-	mock.SetEchoContext(expect)
-
-	actual := mock.echoCtx
-
-	if actual != expect {
-		t.Errorf("expected %v but got %v", expect, actual)
-	}
-}
--- a/pkg/modules/api/errors.go
+++ b/pkg/modules/api/errors.go
@@ -52,15 +52,15 @@ func (w sentinelWrappedError) HTTPError() (int, string) {
 // will be displayed in a log, while the SentinelHTTPError will be sent in the
 // response.
 //
-//  return api.WrapError(
-//    // This first error will be logged.
-//    fmt.Errorf("my action: %w", err),
-//    // The HTTP error will be sent as a response.
-//    api.NewSentinelHTTPError(
-//      http.StatusForbidden,
-//      "Hey, you did something wrong!"
-//    ),
-//  )
+//	return api.WrapError(
+//	  // This first error will be logged.
+//	  fmt.Errorf("my action: %w", err),
+//	  // The HTTP error will be sent as a response.
+//	  api.NewSentinelHTTPError(
+//	    http.StatusForbidden,
+//	    "Hey, you did something wrong!"
+//	  ),
+//	)
 func WrapError(err error, sentinel SentinelHTTPError) error {
 	return sentinelWrappedError{
 		error:    err,
--- a/pkg/modules/api/formdata.go
+++ b/pkg/modules/api/formdata.go
@@ -2,8 +2,8 @@ package api

 import (
 	"fmt"
-	"io/ioutil"
 	"net/http"
+	"os"
 	"path/filepath"
 	"sort"
 	"strconv"
@@ -16,7 +16,7 @@ import (
 // FormData is a helper for validating and hydrating values from a
 // "multipart/form-data" request.
 //
-//  form := ctx.FormData()
+//	form := ctx.FormData()
 type FormData struct {
 	values map[string][]string
 	files  map[string]string
@@ -27,11 +27,11 @@ type FormData struct {
 // SentinelHTTPError (status code 400, errors' details as message) wrapped
 // inside.
 //
-//  var foo string
+//	var foo string
 //
-//  err := ctx.FormData().
-//     MandatoryString("foo", &foo, "bar").
-//     Validate()
+//	err := ctx.FormData().
+//	   MandatoryString("foo", &foo, "bar").
+//	   Validate()
 func (form FormData) Validate() error {
 	if form.errors == nil {
 		return nil
@@ -45,9 +45,9 @@ func (form FormData) Validate() error {

 // String binds a form data value to a string variable.
 //
-//  var foo string
+//	var foo string
 //
-//  ctx.FormData().String("foo", &foo, "bar")
+//	ctx.FormData().String("foo", &foo, "bar")
 func (form *FormData) String(key string, target *string, defaultValue string) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
@@ -55,9 +55,9 @@ func (form *FormData) String(key string, target *string, defaultValue string) *F
 // MandatoryString binds a form data value to a string variable. It populates
 // an error if the value is empty or the "key" does not exist.
 //
-//  var foo string
+//	var foo string
 //
-//  ctx.FormData().MandatoryString("foo", &foo)
+//	ctx.FormData().MandatoryString("foo", &foo)
 func (form *FormData) MandatoryString(key string, target *string) *FormData {
 	return form.mustMandatoryValue(key, target)
 }
@@ -65,9 +65,9 @@ func (form *FormData) MandatoryString(key string, target *string) *FormData {
 // Bool binds a form data value to a bool variable. It populates an error if
 // the value is not bool.
 //
-//  var foo bool
+//	var foo bool
 //
-//  ctx.FormData().Bool("foo", &foo, true)
+//	ctx.FormData().Bool("foo", &foo, true)
 func (form *FormData) Bool(key string, target *bool, defaultValue bool) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
@@ -75,9 +75,9 @@ func (form *FormData) Bool(key string, target *bool, defaultValue bool) *FormDat
 // MandatoryBool binds a form data value to a bool variable. It populates an
 // error if the value is not bool, is empty, or the "key" does not exist.
 //
-//  var foo bool
+//	var foo bool
 //
-//  ctx.FormData().MandatoryBool("foo", &foo)
+//	ctx.FormData().MandatoryBool("foo", &foo)
 func (form *FormData) MandatoryBool(key string, target *bool) *FormData {
 	return form.mustMandatoryValue(key, target)
 }
@@ -85,9 +85,9 @@ func (form *FormData) MandatoryBool(key string, target *bool) *FormData {
 // Int binds a form data value to an int variable. It populates an error if the
 // value is not int.
 //
-//  var foo int
+//	var foo int
 //
-//  ctx.FormData().Int("foo", &foo, 2)
+//	ctx.FormData().Int("foo", &foo, 2)
 func (form *FormData) Int(key string, target *int, defaultValue int) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
@@ -95,9 +95,9 @@ func (form *FormData) Int(key string, target *int, defaultValue int) *FormData {
 // MandatoryInt binds a form data value to an int variable. It populates an
 // error if the value is not int, is empty, or the "key" does not exist.
 //
-//  var foo int
+//	var foo int
 //
-//  ctx.FormData().MandatoryInt("foo", &foo)
+//	ctx.FormData().MandatoryInt("foo", &foo)
 func (form *FormData) MandatoryInt(key string, target *int) *FormData {
 	return form.mustMandatoryValue(key, target)
 }
@@ -105,9 +105,9 @@ func (form *FormData) MandatoryInt(key string, target *int) *FormData {
 // Float64 binds a form data value to a float64 variable. It populates an error
 // if the value is not float64.
 //
-//  var foo float64
+//	var foo float64
 //
-//  ctx.FormData().Float64("foo", &foo, 2.0)
+//	ctx.FormData().Float64("foo", &foo, 2.0)
 func (form *FormData) Float64(key string, target *float64, defaultValue float64) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
@@ -115,9 +115,9 @@ func (form *FormData) Float64(key string, target *float64, defaultValue float64)
 // MandatoryFloat64 binds a form data value to a float64 variable. It populates
 // an error if the is not float64, is empty, or the "key" does not exist.
 //
-//  var foo float64
+//	var foo float64
 //
-//  ctx.FormData().MandatoryFloat64("foo", &foo)
+//	ctx.FormData().MandatoryFloat64("foo", &foo)
 func (form *FormData) MandatoryFloat64(key string, target *float64) *FormData {
 	return form.mustMandatoryValue(key, target)
 }
@@ -125,9 +125,9 @@ func (form *FormData) MandatoryFloat64(key string, target *float64) *FormData {
 // Duration binds a form data value to a time.Duration variable. It populates
 // an error if the form data value is not time.Duration.
 //
-//  var foo time.Duration
+//	var foo time.Duration
 //
-//  ctx.FormData().Duration("foo", &foo, time.Duration(2) * time.Second)
+//	ctx.FormData().Duration("foo", &foo, time.Duration(2) * time.Second)
 func (form *FormData) Duration(key string, target *time.Duration, defaultValue time.Duration) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
@@ -136,31 +136,31 @@ func (form *FormData) Duration(key string, target *time.Duration, defaultValue t
 // populates an error if the value is not time.Duration, is empty, or the "key"
 // does not exist.
 //
-//  var foo time.Duration
+//	var foo time.Duration
 //
-//  ctx.FormData().MandatoryDuration("foo", &foo)
+//	ctx.FormData().MandatoryDuration("foo", &foo)
 func (form *FormData) MandatoryDuration(key string, target *time.Duration) *FormData {
 	return form.mustMandatoryValue(key, target)
 }

 // Custom helps to define a custom binding function for a form data value.
 //
-//  var foo map[string]string
+//	var foo map[string]string
 //
-//  ctx.FormData().Custom("foo", func(value string) error {
-//    if value == "" {
-//      foo = "bar"
+//	ctx.FormData().Custom("foo", func(value string) error {
+//	  if value == "" {
+//	    foo = "bar"
 //
-//      return nil
-//    }
+//	    return nil
+//	  }
 //
-//    err := json.Unmarshal([]byte(value), &foo)
-//    if err != nil {
-//      return fmt.Errorf("unmarshal foo: %w", err)
-//    }
+//	  err := json.Unmarshal([]byte(value), &foo)
+//	  if err != nil {
+//	    return fmt.Errorf("unmarshal foo: %w", err)
+//	  }
 //
-//    return nil
-//  })
+//	  return nil
+//	})
 func (form *FormData) Custom(key string, assign func(value string) error) *FormData {
 	var value string
 	form.mustValue(key, &value, "")
@@ -179,16 +179,16 @@ func (form *FormData) Custom(key string, assign func(value string) error) *FormD
 // value. It populates an error if the value is empty or the "key" does not
 // exist.
 //
-//  var foo map[string]string
+//	var foo map[string]string
 //
-//  ctx.FormData().MandatoryCustom("foo", func(value string) error {
-//    err := json.Unmarshal([]byte(value), &foo)
-//    if err != nil {
-//      return fmt.Errorf("unmarshal foo: %w", err)
-//    }
+//	ctx.FormData().MandatoryCustom("foo", func(value string) error {
+//	  err := json.Unmarshal([]byte(value), &foo)
+//	  if err != nil {
+//	    return fmt.Errorf("unmarshal foo: %w", err)
+//	  }
 //
-//    return nil
-//  })
+//	  return nil
+//	})
 func (form *FormData) MandatoryCustom(key string, assign func(value string) error) *FormData {
 	var value string
 	form.mustMandatoryValue(key, &value)
@@ -209,9 +209,9 @@ func (form *FormData) MandatoryCustom(key string, assign func(value string) erro

 // Path binds the absolute path of a form data file to a string variable.
 //
-//  var path string
+//	var path string
 //
-//  ctx.FormData().Path("foo.txt", &path)
+//	ctx.FormData().Path("foo.txt", &path)
 func (form *FormData) Path(filename string, target *string) *FormData {
 	return form.path(filename, target)
 }
@@ -219,18 +219,18 @@ func (form *FormData) Path(filename string, target *string) *FormData {
 // MandatoryPath binds the absolute path ofa  form data file to a string
 // variable. It populates an error if the file does not exist.
 //
-//  var path string
+//	var path string
 //
-//  ctx.FormData().MandatoryPath("foo.txt", &path)
+//	ctx.FormData().MandatoryPath("foo.txt", &path)
 func (form *FormData) MandatoryPath(filename string, target *string) *FormData {
 	return form.mandatoryPath(filename, target)
 }

 // Content binds the content of a form data file to a string variable.
 //
-//  var content string
+//	var content string
 //
-//  ctx.FormData().Content("foo.txt", &content, "bar")
+//	ctx.FormData().Content("foo.txt", &content, "bar")
 func (form *FormData) Content(filename string, target *string, defaultValue string) *FormData {
 	var path string
 	form.path(filename, &path)
@@ -247,9 +247,9 @@ func (form *FormData) Content(filename string, target *string, defaultValue stri
 // MandatoryContent binds the content of a form data file to a string variable.
 // It populates an error if the file does not exist.
 //
-//  var content string
+//	var content string
 //
-//  ctx.FormData().MandatoryContent("foo.txt", &content)
+//	ctx.FormData().MandatoryContent("foo.txt", &content)
 func (form *FormData) MandatoryContent(filename string, target *string) *FormData {
 	var path string
 	form.mandatoryPath(filename, &path)
@@ -264,9 +264,9 @@ func (form *FormData) MandatoryContent(filename string, target *string) *FormDat
 // Paths binds the absolute paths of form data files, according to a list of
 // file extensions, to a string slice variable.
 //
-//  var paths []string
+//	var paths []string
 //
-//  ctx.FormData().Paths([]string{".txt"}, &paths)
+//	ctx.FormData().Paths([]string{".txt"}, &paths)
 func (form *FormData) Paths(extensions []string, target *[]string) *FormData {
 	return form.paths(extensions, target)
 }
@@ -275,9 +275,9 @@ func (form *FormData) Paths(extensions []string, target *[]string) *FormData {
 // list of file extensions, to a string slice variable. It populates an error
 // if there is no file for given file extensions.
 //
-//  var paths []string
+//	var paths []string
 //
-//  ctx.FormData().MandatoryPaths([]string{".txt"}, &paths)
+//	ctx.FormData().MandatoryPaths([]string{".txt"}, &paths)
 func (form *FormData) MandatoryPaths(extensions []string, target *[]string) *FormData {
 	form.paths(extensions, target)

@@ -426,7 +426,7 @@ func (form *FormData) mandatoryPath(filename string, target *string) *FormData {
 // readFile binds the content of a file to a string variable. It populates an
 // error if it fails to read the file content.
 func (form *FormData) readFile(path, filename string, target *string) *FormData {
-	b, err := ioutil.ReadFile(path)
+	b, err := os.ReadFile(path)
 	if err != nil {
 		form.append(
 			fmt.Errorf("form file '%s' is invalid (%w)", filename, err),
--- a/pkg/modules/api/middlewares.go
+++ b/pkg/modules/api/middlewares.go
@@ -57,7 +57,7 @@ func httpErrorHandler() echo.HTTPErrorHandler {
 // latencyMiddleware sets the start time in the echo.Context under "startTime".
 // Its value will be used later to calculate a request latency.
 //
-//  startTime := c.Get("startTime").(time.Time)
+//	startTime := c.Get("startTime").(time.Time)
 func latencyMiddleware() echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -75,14 +75,14 @@ func latencyMiddleware() echo.MiddlewareFunc {
 // Its value may be used to skip a middleware execution based on a request
 // URI.
 //
-//  rootPath := c.Get("rootPath").(string)
-//  healthURI := fmt.Sprintf("%s/health", rootPath)
+//	rootPath := c.Get("rootPath").(string)
+//	healthURI := fmt.Sprintf("%s/health", rootPath)
 //
-//  // Skip the middleware if health check URI.
-//  if c.Request().RequestURI == healthURI {
-//    // Call the next middleware in the chain.
-//    return next(c)
-//  }
+//	// Skip the middleware if health check URI.
+//	if c.Request().RequestURI == healthURI {
+//	  // Call the next middleware in the chain.
+//	  return next(c)
+//	}
 func rootPathMiddleware(rootPath string) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -98,8 +98,8 @@ func rootPathMiddleware(rootPath string) echo.MiddlewareFunc {
 // "trace". Its value is either retrieved from the trace header or generated if
 // the header is not present / its value is empty.
 //
-//  trace := c.Get("trace").(string)
-//  traceHeader := c.Get("traceHeader").(string).
+//	trace := c.Get("trace").(string)
+//	traceHeader := c.Get("traceHeader").(string).
 func traceMiddleware(header string) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -123,7 +123,7 @@ func traceMiddleware(header string) echo.MiddlewareFunc {
 // loggerMiddleware sets the logger in the echo.Context under "logger" and logs
 // a synchronous request result.
 //
-//  logger := c.Get("logger").(*zap.Logger)
+//	logger := c.Get("logger").(*zap.Logger)
 func loggerMiddleware(logger *zap.Logger, disableLoggingForPaths []string) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -197,8 +197,8 @@ func loggerMiddleware(logger *zap.Logger, disableLoggingForPaths []string) echo.
 // and "cancel". If the process is synchronous, it also handles the result of a
 // "multipart/form-data" request.
 //
-//  ctx := c.Get("context").(*api.Context)
-//  cancel := c.Get("cancel").(context.CancelFunc)
+//	ctx := c.Get("context").(*api.Context)
+//	cancel := c.Get("cancel").(context.CancelFunc)
 func contextMiddleware(timeout time.Duration) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
--- a/pkg/modules/api/mocks.go
+++ b/pkg/modules/api/mocks.go
@@ -0,0 +1,75 @@
+package api
+
+import (
+	"github.com/labstack/echo/v4"
+	"go.uber.org/zap"
+)
+
+// ContextMock is a helper for tests.
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+type ContextMock struct {
+	*Context
+}
+
+// SetDirPath sets the context's working directory path.
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetDirPath("/foo")
+func (ctx *ContextMock) SetDirPath(path string) {
+	ctx.dirPath = path
+}
+
+// SetValues sets the values.
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetValues(map[string][]string{
+//	  "url": {
+//	    "foo",
+//	  },
+//	})
+func (ctx *ContextMock) SetValues(values map[string][]string) {
+	ctx.values = values
+}
+
+// SetFiles sets the files.
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetFiles(map[string]string{
+//	  "foo": "/foo",
+//	})
+func (ctx *ContextMock) SetFiles(files map[string]string) {
+	ctx.files = files
+}
+
+// SetCancelled sets if the context is cancelled or not.
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetCancelled(true)
+func (ctx *ContextMock) SetCancelled(cancelled bool) {
+	ctx.cancelled = cancelled
+}
+
+// OutputPaths returns the registered output paths.
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	outputPaths := ctx.OutputPaths()
+func (ctx ContextMock) OutputPaths() []string {
+	return ctx.outputPaths
+}
+
+// SetLogger sets the logger.
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetLogger(zap.NewNop())
+func (ctx *ContextMock) SetLogger(logger *zap.Logger) {
+	ctx.logger = logger
+}
+
+// SetEchoContext sets the echo.Context.
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.setEchoContext(c)
+func (ctx *ContextMock) SetEchoContext(c echo.Context) {
+	ctx.Context.echoCtx = c
+}
--- a/pkg/modules/api/mocks_test.go
+++ b/pkg/modules/api/mocks_test.go
@@ -0,0 +1,105 @@
+package api
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/labstack/echo/v4"
+	"go.uber.org/zap"
+)
+
+func TestContextMock_SetDirPath(t *testing.T) {
+	mock := &ContextMock{&Context{}}
+	mock.SetDirPath("/foo")
+
+	actual := mock.dirPath
+	expect := "/foo"
+
+	if actual != expect {
+		t.Errorf("expected '%s' but got '%s'", expect, actual)
+	}
+}
+
+func TestContextMock_SetValues(t *testing.T) {
+	mock := &ContextMock{&Context{}}
+	mock.SetValues(map[string][]string{
+		"foo": {"foo"},
+	})
+
+	actual := mock.values
+	expect := map[string][]string{
+		"foo": {"foo"},
+	}
+
+	if !reflect.DeepEqual(actual, expect) {
+		t.Errorf("expected %+v but got: %+v", expect, actual)
+	}
+}
+
+func TestContextMock_SetFiles(t *testing.T) {
+	mock := &ContextMock{&Context{}}
+	mock.SetFiles(map[string]string{
+		"foo": "/foo",
+	})
+
+	actual := mock.files
+	expect := map[string]string{
+		"foo": "/foo",
+	}
+
+	if !reflect.DeepEqual(actual, expect) {
+		t.Errorf("expected %+v but got: %+v", expect, actual)
+	}
+}
+
+func TestContextMock_SetCancelled(t *testing.T) {
+	mock := &ContextMock{&Context{}}
+	mock.SetCancelled(true)
+
+	actual := mock.cancelled
+
+	if !actual {
+		t.Errorf("expected %t but got %t", true, actual)
+	}
+}
+
+func TestContextMock_OutputPaths(t *testing.T) {
+	mock := ContextMock{
+		&Context{
+			outputPaths: []string{"/foo"},
+		},
+	}
+
+	actual := mock.OutputPaths()
+	expect := []string{"/foo"}
+
+	if !reflect.DeepEqual(actual, expect) {
+		t.Errorf("expected %+v but got: %+v", expect, actual)
+	}
+}
+
+func TestContextMock_SetLogger(t *testing.T) {
+	mock := ContextMock{&Context{}}
+
+	expect := zap.NewNop()
+	mock.SetLogger(expect)
+
+	actual := mock.logger
+
+	if actual != expect {
+		t.Errorf("expected %v but got %v", expect, actual)
+	}
+}
+
+func TestContextMock_SetEchoContext(t *testing.T) {
+	mock := ContextMock{&Context{}}
+
+	expect := echo.New().NewContext(nil, nil)
+	mock.SetEchoContext(expect)
+
+	actual := mock.echoCtx
+
+	if actual != expect {
+		t.Errorf("expected %v but got %v", expect, actual)
+	}
+}
--- a/pkg/modules/chromium/chromium.go
+++ b/pkg/modules/chromium/chromium.go
@@ -1,16 +1,17 @@
 package chromium

 import (
+	"bufio"
 	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"regexp"
 	"strings"
 	"sync"
 	"time"

+	"github.com/chromedp/cdproto/cdp"
 	"github.com/chromedp/cdproto/emulation"
 	"github.com/chromedp/cdproto/fetch"
 	"github.com/chromedp/cdproto/network"
@@ -33,6 +34,10 @@ var (
 	// allowed/denied lists.
 	ErrURLNotAuthorized = errors.New("URL not authorized")

+	// ErrOmitBackgroundWithoutPrintBackground happens if
+	// Options.OmitBackground is set to true but not Options.PrintBackground.
+	ErrOmitBackgroundWithoutPrintBackground = errors.New("omit background without print background")
+
 	// ErrInvalidEmulatedMediaType happens if the emulated media type is not
 	// "screen" nor "print". Empty value are allowed though.
 	ErrInvalidEmulatedMediaType = errors.New("invalid emulated media type")
@@ -66,9 +71,11 @@ type Chromium struct {
 	engine                   gotenberg.PDFEngine
 	userAgent                string
 	incognito                bool
+	allowInsecureLocalhost   bool
 	ignoreCertificateErrors  bool
 	disableWebSecurity       bool
 	allowFileAccessFromFiles bool
+	hostResolverRules        string
 	proxyServer              string
 	allowList                *regexp.Regexp
 	denyList                 *regexp.Regexp
@@ -85,7 +92,7 @@ type LinkTag struct {

 // ScriptTag represents an HTML <script> element.
 type ScriptTag struct {
-	// Src is the "src" attribute of the HTML <link> element.
+	// Src is the "src" attribute of the HTML <script> element.
 	// Required.
 	Src string `json:"src"`
 }
@@ -142,6 +149,11 @@ type Options struct {
 	// Optional.
 	PrintBackground bool

+	// OmitBackground hides default white background and allows generating PDFs
+	// with transparency.
+	// Optional.
+	OmitBackground bool
+
 	// Scale is the scale of the page rendering.
 	// Optional.
 	Scale float64
@@ -212,6 +224,7 @@ func DefaultOptions() Options {
 		ExtraScriptTags:         nil,
 		Landscape:               false,
 		PrintBackground:         false,
+		OmitBackground:          false,
 		Scale:                   1.0,
 		PaperWidth:              8.5,
 		PaperHeight:             11,
@@ -250,9 +263,11 @@ func (mod Chromium) Descriptor() gotenberg.ModuleDescriptor {
 			fs := flag.NewFlagSet("chromium", flag.ExitOnError)
 			fs.String("chromium-user-agent", "", "Override the default User-Agent header")
 			fs.Bool("chromium-incognito", false, "Start Chromium with incognito mode")
+			fs.Bool("chromium-allow-insecure-localhost", false, "Ignore TLS/SSL errors on localhost")
 			fs.Bool("chromium-ignore-certificate-errors", false, "Ignore the certificate errors")
 			fs.Bool("chromium-disable-web-security", false, "Don't enforce the same-origin policy")
 			fs.Bool("chromium-allow-file-access-from-files", false, "Allow file:// URIs to read other file:// URIs")
+			fs.String("chromium-host-resolver-rules", "", "Set custom mappings to the host resolver")
 			fs.String("chromium-proxy-server", "", "Set the outbound proxy server; this switch only affects HTTP and HTTPS requests")
 			fs.String("chromium-allow-list", "", "Set the allowed URLs for Chromium using a regular expression")
 			fs.String("chromium-deny-list", "^file:///[^tmp].*", "Set the denied URLs for Chromium using a regular expression")
@@ -274,9 +289,11 @@ func (mod Chromium) Descriptor() gotenberg.ModuleDescriptor {
 func (mod *Chromium) Provision(ctx *gotenberg.Context) error {
 	flags := ctx.ParsedFlags()
 	mod.userAgent = flags.MustString("chromium-user-agent")
+	mod.allowInsecureLocalhost = flags.MustBool("chromium-allow-insecure-localhost")
 	mod.ignoreCertificateErrors = flags.MustBool("chromium-ignore-certificate-errors")
 	mod.disableWebSecurity = flags.MustBool("chromium-disable-web-security")
 	mod.allowFileAccessFromFiles = flags.MustBool("chromium-allow-file-access-from-files")
+	mod.hostResolverRules = flags.MustString("chromium-host-resolver-rules")
 	mod.proxyServer = flags.MustString("chromium-proxy-server")
 	mod.allowList = flags.MustRegexp("chromium-allow-list")
 	mod.denyList = flags.MustRegexp("chromium-deny-list")
@@ -382,6 +399,11 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath
 		args = append(args, chromedp.Flag("incognito", mod.incognito))
 	}

+	if mod.allowInsecureLocalhost {
+		// See https://github.com/gotenberg/gotenberg/issues/488.
+		args = append(args, chromedp.Flag("allow-insecure-localhost", true))
+	}
+
 	if mod.ignoreCertificateErrors {
 		args = append(args, chromedp.IgnoreCertErrors)
 	}
@@ -395,6 +417,11 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath
 		args = append(args, chromedp.Flag("allow-file-access-from-files", true))
 	}

+	if mod.hostResolverRules != "" {
+		// See https://github.com/gotenberg/gotenberg/issues/488.
+		args = append(args, chromedp.Flag("host-resolver-rules", mod.hostResolverRules))
+	}
+
 	if mod.proxyServer != "" {
 		// See https://github.com/gotenberg/gotenberg/issues/376.
 		args = append(args, chromedp.ProxyServer(mod.proxyServer))
@@ -404,6 +431,14 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath
 		args = append(args, chromedp.UserAgent(options.UserAgent))
 	}

+	// See https://github.com/gotenberg/gotenberg/issues/524.
+	deadline, ok := ctx.Deadline()
+	if !ok {
+		return errors.New("context has no deadline")
+	}
+
+	args = append(args, chromedp.WSURLReadTimeout(time.Until(deadline)))
+
 	allocatorCtx, cancel := chromedp.NewExecAllocator(ctx, args...)
 	defer cancel()

@@ -426,7 +461,7 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath
 		consoleExceptionsMu sync.RWMutex
 	)

-	printToPDF := func(URL string, options Options, result *[]byte) chromedp.Tasks {
+	printToPDF := func(URL string, options Options, outputPath string) chromedp.Tasks {
 		// We validate the underlying requests against our allow / deny lists.
 		// If a request does not pass the validation, we make it fail.
 		listenForEventRequestPaused(taskCtx, logger, mod.allowList, mod.denyList)
@@ -500,6 +535,35 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath

 				return fmt.Errorf("wait for events: %w", err)
 			}),
+			chromedp.ActionFunc(func(ctx context.Context) error {
+				// See https://github.com/gotenberg/gotenberg/issues/226.
+				if !options.OmitBackground {
+					logger.Debug("default white background not hidden")
+
+					return nil
+				}
+
+				if !options.PrintBackground {
+					// See https://github.com/chromedp/chromedp/issues/1179#issuecomment-1284794416.
+					return fmt.Errorf("validate omit background: %w", ErrOmitBackgroundWithoutPrintBackground)
+				}
+
+				logger.Debug("hide default white background")
+
+				err := emulation.SetDefaultBackgroundColorOverride().WithColor(
+					&cdp.RGBA{
+						R: 0,
+						G: 0,
+						B: 0,
+						A: 0,
+					}).Do(ctx)
+
+				if err == nil {
+					return nil
+				}
+
+				return fmt.Errorf("hide default white background: %w", err)
+			}),
 			chromedp.ActionFunc(func(ctx context.Context) error {
 				// See:
 				// https://github.com/gotenberg/gotenberg/issues/354
@@ -732,6 +796,7 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath
 			}),
 			chromedp.ActionFunc(func(ctx context.Context) error {
 				printToPDF := page.PrintToPDF().
+					WithTransferMode(page.PrintToPDFTransferModeReturnAsStream).
 					WithLandscape(options.Landscape).
 					WithPrintBackground(options.PrintBackground).
 					WithScale(options.Scale).
@@ -741,21 +806,65 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath
 					WithMarginBottom(options.MarginBottom).
 					WithMarginLeft(options.MarginLeft).
 					WithMarginRight(options.MarginRight).
-					WithIgnoreInvalidPageRanges(false).
 					WithPageRanges(options.PageRanges).
-					WithDisplayHeaderFooter(true).
-					WithHeaderTemplate(options.HeaderTemplate).
-					WithFooterTemplate(options.FooterTemplate).
 					WithPreferCSSPageSize(options.PreferCSSPageSize)

+				hasCustomHeaderFooter := options.HeaderTemplate != DefaultOptions().HeaderTemplate ||
+					options.FooterTemplate != DefaultOptions().FooterTemplate
+
+				if !hasCustomHeaderFooter {
+					logger.Debug("no custom header nor footer")
+
+					printToPDF = printToPDF.WithDisplayHeaderFooter(false)
+				} else {
+					logger.Debug("with custom header and/or footer")
+
+					printToPDF = printToPDF.
+						WithDisplayHeaderFooter(true).
+						WithHeaderTemplate(options.HeaderTemplate).
+						WithFooterTemplate(options.FooterTemplate)
+				}
+
 				logger.Debug(fmt.Sprintf("print to PDF with: %+v", printToPDF))

-				data, _, err := printToPDF.Do(ctx)
+				_, stream, err := printToPDF.Do(ctx)
 				if err != nil {
 					return fmt.Errorf("print to PDF: %w", err)
 				}

-				*result = data
+				reader := &streamReader{
+					ctx:    ctx,
+					handle: stream,
+					r:      nil,
+					pos:    0,
+					eof:    false,
+				}
+
+				defer func() {
+					err := reader.Close()
+					if err != nil {
+						logger.Error(fmt.Sprintf("close reader: %s", err))
+					}
+				}()
+
+				file, err := os.OpenFile(outputPath, os.O_CREATE|os.O_WRONLY, 0600)
+				if err != nil {
+					return fmt.Errorf("open output path: %w", err)
+				}
+
+				defer func() {
+					err := file.Close()
+					if err != nil {
+						logger.Error(fmt.Sprintf("close output path: %s", err))
+					}
+				}()
+
+				buffer := bufio.NewReader(reader)
+
+				_, err = buffer.WriteTo(file)
+				if err != nil {
+					return fmt.Errorf("write result to output path: %w", err)
+				}

 				return nil
 			}),
@@ -766,8 +875,7 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath
 	activeInstancesCount += 1
 	activeInstancesCountMu.Unlock()

-	var buffer []byte
-	err := chromedp.Run(taskCtx, printToPDF(URL, options, &buffer))
+	err := chromedp.Run(taskCtx, printToPDF(URL, options, outputPath))

 	activeInstancesCountMu.Lock()
 	activeInstancesCount -= 1
@@ -809,11 +917,6 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath
 		return fmt.Errorf("%v: %w", consoleExceptions, ErrConsoleExceptions)
 	}

-	err = ioutil.WriteFile(outputPath, buffer, 0600)
-	if err != nil {
-		return fmt.Errorf("write result to output path: %w", err)
-	}
-
 	return nil
 }

--- a/pkg/modules/chromium/chromium_test.go
+++ b/pkg/modules/chromium/chromium_test.go
@@ -3,7 +3,6 @@ package chromium
 import (
 	"context"
 	"errors"
-	"io/ioutil"
 	"os"
 	"reflect"
 	"regexp"
@@ -225,16 +224,19 @@ func TestChromium_Routes(t *testing.T) {
 }

 func TestChromium_PDF(t *testing.T) {
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		name                     string
 		timeout                  time.Duration
 		cancel                   context.CancelFunc
 		URL                      string
 		options                  Options
 		userAgent                string
 		incognito                bool
+		allowInsecureLocalhost   bool
 		ignoreCertificateErrors  bool
 		disableWebSecurity       bool
 		allowFileAccessFromFiles bool
+		hostResolverRules        string
 		proxyServer              string
 		allowList                *regexp.Regexp
 		denyList                 *regexp.Regexp
@@ -242,34 +244,51 @@ func TestChromium_PDF(t *testing.T) {
 		expectErr                bool
 	}{
 		{
+			name:      "context has no deadline",
+			URL:       "file:///tests/test/testdata/chromium/html/sample1/index.html",
+			expectErr: true,
+		},
+		{
+			name:      "URL does not match the expression from the allowed list",
+			timeout:   time.Duration(60) * time.Second,
 			URL:       "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			allowList: regexp.MustCompile("file:///tmp/*"),
 			expectErr: true,
 		},
 		{
+			name:      "URL does not match the expression from the denied list",
+			timeout:   time.Duration(60) * time.Second,
 			URL:       "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			denyList:  regexp.MustCompile("file:///tests/*"),
 			expectErr: true,
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			name:    "with user agent",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			options: Options{
 				UserAgent: "foo",
 			},
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample10/index.html",
+			name:    "fail on console exceptions",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample10/index.html",
 			options: Options{
 				FailOnConsoleExceptions: true,
 			},
 			expectErr: true,
 		},
 		{
+			name:              "disable JavaScript",
+			timeout:           time.Duration(60) * time.Second,
 			URL:               "file:///tests/test/testdata/chromium/html/sample9/index.html",
 			disableJavaScript: true,
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			name:    "with extra HTTP headers",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			options: Options{
 				ExtraHTTPHeaders: map[string]string{
 					"foo": "bar",
@@ -277,7 +296,9 @@ func TestChromium_PDF(t *testing.T) {
 			},
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample11/index.html",
+			name:    "with extra link tags",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample11/index.html",
 			options: Options{
 				ExtraLinkTags: []LinkTag{
 					{
@@ -290,26 +311,52 @@ func TestChromium_PDF(t *testing.T) {
 			},
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample8/index.html",
+			name:    "with invalid emulated media type",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample8/index.html",
 			options: Options{
 				EmulatedMediaType: "foo",
 			},
 			expectErr: true,
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample8/index.html",
+			name:    "with screen emulated media type",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample8/index.html",
 			options: Options{
 				EmulatedMediaType: "screen",
 			},
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample8/index.html",
+			name:    "with print emulated media type",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample8/index.html",
 			options: Options{
 				EmulatedMediaType: "print",
 			},
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample11/index.html",
+			name:    "with omit background but not print background",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			options: Options{
+				OmitBackground: true,
+			},
+			expectErr: true,
+		},
+		{
+			name:    "with omit background and print background",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			options: Options{
+				OmitBackground:  true,
+				PrintBackground: true,
+			},
+		},
+		{
+			name:    "with extra script tags",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample11/index.html",
 			options: Options{
 				ExtraScriptTags: []ScriptTag{
 					{
@@ -319,12 +366,15 @@ func TestChromium_PDF(t *testing.T) {
 			},
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			name:    "with wait delay",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			options: Options{
 				WaitDelay: time.Duration(1) * time.Nanosecond,
 			},
 		},
 		{
+			name:    "with invalid wait window status",
 			timeout: time.Duration(3) * time.Second,
 			URL:     "file:///tests/test/testdata/chromium/html/sample2/index.html",
 			options: Options{
@@ -333,6 +383,7 @@ func TestChromium_PDF(t *testing.T) {
 			expectErr: true,
 		},
 		{
+			name:    "with wait window status",
 			timeout: time.Duration(3) * time.Second,
 			URL:     "file:///tests/test/testdata/chromium/html/sample2/index.html",
 			options: Options{
@@ -340,6 +391,7 @@ func TestChromium_PDF(t *testing.T) {
 			},
 		},
 		{
+			name:    "with wait for expression that should not happen",
 			timeout: time.Duration(3) * time.Second,
 			URL:     "file:///tests/test/testdata/chromium/html/sample2/index.html",
 			options: Options{
@@ -348,6 +400,7 @@ func TestChromium_PDF(t *testing.T) {
 			expectErr: true,
 		},
 		{
+			name:    "with valid wait for expression",
 			timeout: time.Duration(3) * time.Second,
 			URL:     "file:///tests/test/testdata/chromium/html/sample2/index.html",
 			options: Options{
@@ -355,51 +408,69 @@ func TestChromium_PDF(t *testing.T) {
 			},
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			name:    "with invalid wait for expression",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			options: Options{
 				WaitForExpression: "return undefined",
 			},
 			expectErr: true,
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			name:    "with too big margin bottom",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			options: Options{
 				MarginBottom: 100,
 			},
 			expectErr: true,
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			name:    "with invalid page ranges",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			options: Options{
 				PageRanges: "foo",
 			},
 			expectErr: true,
 		},
 		{
+			name:                     "with a lot of properties",
+			timeout:                  time.Duration(60) * time.Second,
 			URL:                      "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			userAgent:                "foo",
 			incognito:                true,
 			ignoreCertificateErrors:  true,
+			allowInsecureLocalhost:   true,
 			disableWebSecurity:       true,
 			allowFileAccessFromFiles: true,
+			hostResolverRules:        "foo",
 			proxyServer:              "foo",
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample1/index.html",
+			name:    "with file using local and remote assets",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample1/index.html",
 		},
 		{
+			name:      "URL does match the expression from the allowed list",
+			timeout:   time.Duration(60) * time.Second,
 			URL:       "file:///tests/test/testdata/chromium/html/sample3/index.html",
 			allowList: regexp.MustCompile("file:///tests/*"),
 		},
 		{
+			name:     "URL does match the expression from the denied list",
+			timeout:  time.Duration(60) * time.Second,
 			URL:      "file:///tests/test/testdata/chromium/html/sample3/index.html",
 			denyList: regexp.MustCompile("file:///etc/*"),
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			name:    "with custom header and footer templates",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
 			options: Options{
 				HeaderTemplate: func() string {
-					b, err := ioutil.ReadFile("/tests/test/testdata/chromium/url/sample2/header.html")
+					b, err := os.ReadFile("/tests/test/testdata/chromium/url/sample2/header.html")
 					if err != nil {
 						t.Fatalf("expected no error but got: %v", err)
 					}
@@ -407,7 +478,7 @@ func TestChromium_PDF(t *testing.T) {
 					return string(b)
 				}(),
 				FooterTemplate: func() string {
-					b, err := ioutil.ReadFile("/tests/test/testdata/chromium/url/sample2/footer.html")
+					b, err := os.ReadFile("/tests/test/testdata/chromium/url/sample2/footer.html")
 					if err != nil {
 						t.Fatalf("expected no error but got: %v", err)
 					}
@@ -417,14 +488,61 @@ func TestChromium_PDF(t *testing.T) {
 			},
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample5/index.html",
+			name:    "with custom header template only",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			options: Options{
+				HeaderTemplate: func() string {
+					b, err := os.ReadFile("/tests/test/testdata/chromium/url/sample2/header.html")
+					if err != nil {
+						t.Fatalf("expected no error but got: %v", err)
+					}
+
+					return string(b)
+				}(),
+				FooterTemplate: DefaultOptions().FooterTemplate,
+			},
 		},
 		{
+			name:    "with custom footer template only",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			options: Options{
+				HeaderTemplate: DefaultOptions().HeaderTemplate,
+				FooterTemplate: func() string {
+					b, err := os.ReadFile("/tests/test/testdata/chromium/url/sample2/footer.html")
+					if err != nil {
+						t.Fatalf("expected no error but got: %v", err)
+					}
+
+					return string(b)
+				}(),
+			},
+		},
+		{
+			name:    "without custom header and footer templates",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample4/index.html",
+			options: Options{
+				HeaderTemplate: DefaultOptions().HeaderTemplate,
+				FooterTemplate: DefaultOptions().FooterTemplate,
+			},
+		},
+		{
+			name:    "with file using a .gif",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample5/index.html",
+		},
+		{
+			name:                     "with allow file access from files",
+			timeout:                  time.Duration(60) * time.Second,
 			URL:                      "file:///tests/test/testdata/chromium/html/sample6/index.html",
 			allowFileAccessFromFiles: true,
 		},
 		{
-			URL: "file:///tests/test/testdata/chromium/html/sample7/index.html",
+			name:    "with file using a style attribute",
+			timeout: time.Duration(60) * time.Second,
+			URL:     "file:///tests/test/testdata/chromium/html/sample7/index.html",
 		},
 	} {
 		func() {
@@ -432,9 +550,11 @@ func TestChromium_PDF(t *testing.T) {
 			mod.binPath = os.Getenv("CHROMIUM_BIN_PATH")
 			mod.userAgent = tc.userAgent
 			mod.incognito = tc.incognito
+			mod.allowInsecureLocalhost = tc.allowInsecureLocalhost
 			mod.ignoreCertificateErrors = tc.ignoreCertificateErrors
 			mod.disableWebSecurity = tc.disableWebSecurity
 			mod.allowFileAccessFromFiles = tc.allowFileAccessFromFiles
+			mod.hostResolverRules = tc.hostResolverRules
 			mod.proxyServer = tc.proxyServer

 			if tc.allowList == nil {
@@ -451,13 +571,13 @@ func TestChromium_PDF(t *testing.T) {

 			outputDir, err := gotenberg.MkdirAll()
 			if err != nil {
-				t.Fatalf("test %d: expected error but got: %v", i, err)
+				t.Fatalf("test %s: expected error but got: %v", tc.name, err)
 			}

 			defer func() {
 				err := os.RemoveAll(outputDir)
 				if err != nil {
-					t.Fatalf("test %d: expected no error but got: %v", i, err)
+					t.Fatalf("test %s: expected no error but got: %v", tc.name, err)
 				}
 			}()

@@ -471,11 +591,11 @@ func TestChromium_PDF(t *testing.T) {
 			}

 			if tc.expectErr && err == nil {
-				t.Errorf("test %d: expected error but got: %v", i, err)
+				t.Errorf("test %s: expected error but got: %v", tc.name, err)
 			}

 			if !tc.expectErr && err != nil {
-				t.Errorf("test %d: expected no error but got: %v", i, err)
+				t.Errorf("test %s: expected no error but got: %v", tc.name, err)
 			}
 		}()
 	}
--- a/pkg/modules/chromium/routes.go
+++ b/pkg/modules/chromium/routes.go
@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"html/template"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -34,7 +33,7 @@ func FormDataChromiumPDFOptions(ctx *api.Context) (*api.FormData, Options) {
 		userAgent                                        string
 		extraHTTPHeaders                                 map[string]string
 		emulatedMediaType                                string
-		landscape, printBackground                       bool
+		landscape, printBackground, omitBackground       bool
 		scale, paperWidth, paperHeight                   float64
 		marginTop, marginBottom, marginLeft, marginRight float64
 		pageRanges                                       string
@@ -79,6 +78,7 @@ func FormDataChromiumPDFOptions(ctx *api.Context) (*api.FormData, Options) {
 		}).
 		Bool("landscape", &landscape, defaultOptions.Landscape).
 		Bool("printBackground", &printBackground, defaultOptions.PrintBackground).
+		Bool("omitBackground", &omitBackground, defaultOptions.OmitBackground).
 		Float64("scale", &scale, defaultOptions.Scale).
 		Float64("paperWidth", &paperWidth, defaultOptions.PaperWidth).
 		Float64("paperHeight", &paperHeight, defaultOptions.PaperHeight).
@@ -103,6 +103,7 @@ func FormDataChromiumPDFOptions(ctx *api.Context) (*api.FormData, Options) {
 		ExtraScriptTags:         defaultOptions.ExtraScriptTags,
 		Landscape:               landscape,
 		PrintBackground:         printBackground,
+		OmitBackground:          omitBackground,
 		Scale:                   scale,
 		PaperWidth:              paperWidth,
 		PaperHeight:             paperHeight,
@@ -130,10 +131,8 @@ func convertURLRoute(chromium API, engine gotenberg.PDFEngine) api.Route {
 			form, options := FormDataChromiumPDFOptions(ctx)

 			var (
-				URL         string
-				PDFformat   string
-				linkPaths   []string
-				scriptPaths []string
+				URL       string
+				PDFformat string
 			)

 			err := form.
@@ -163,176 +162,12 @@ func convertURLRoute(chromium API, engine gotenberg.PDFEngine) api.Route {

 					return nil
 				}).
-				Paths([]string{".woff2", ".woff", ".ttf", ".css"}, &linkPaths).
-				Paths([]string{".js"}, &scriptPaths).
 				Validate()

 			if err != nil {
 				return fmt.Errorf("validate form data: %w", err)
 			}

-			// Thanks to Options.LinkTags and Options.ScriptTags, one may
-			// "hijack" the content of a remote HTML document (for instance, a
-			// website) by loading external assets like scripts or CSS
-			// stylesheets.
-			//
-			// There are two possibilities:
-			//
-			// 1. We auto-detect all files sent in the request that match the
-			// following file extensions: ".woff2", ".woff", ".ttf", ".css",
-			// ".css", and ".js".
-			//
-			// 2. The user has sent both files and a JSON mapping via the
-			// "extraLinkTags" and/or "extraScriptTags" form fields. In such a
-			// scenario, the JSON mapping has the priority for ordering, and
-			// files which are a not mapped are added at the end. The user may
-			// also have sent remote URLs in the JSON mapping.
-
-			// First, let's handle the HTML <link> elements.
-			hasExtraLinkTags := len(options.ExtraLinkTags) > 0
-			hasLinkPaths := len(linkPaths) > 0
-
-			if !hasExtraLinkTags && hasLinkPaths {
-				// First scenario: there is no JSON mapping, we simply add the
-				// paths.
-				options.ExtraLinkTags = make([]LinkTag, len(linkPaths))
-
-				for i, path := range linkPaths {
-					options.ExtraLinkTags[i] = LinkTag{
-						Href: filepath.Base(path),
-					}
-				}
-			} else if hasExtraLinkTags && hasLinkPaths {
-				// Second scenario: there are both files and a JSON mapping.
-
-				// First, find the filenames of the files.
-				filenames := make([]string, len(linkPaths))
-				for i, path := range linkPaths {
-					filenames[i] = filepath.Base(path)
-				}
-
-				var extraLinkTags []LinkTag
-
-				// Then, let's find the filenames that exist in the JSON
-				// mapping, plus the entries that do only exist in the JSON
-				// mapping.
-				for _, linkTagFromMapping := range options.ExtraLinkTags {
-					found := false
-
-					for _, filename := range filenames {
-						if linkTagFromMapping.Href == filename {
-							extraLinkTags = append(extraLinkTags, linkTagFromMapping)
-							found = true
-
-							break
-						}
-					}
-
-					if !found {
-						// This entry only exist in the JSON mapping.
-						extraLinkTags = append(extraLinkTags, linkTagFromMapping)
-					}
-				}
-
-				// Then, add the remaining filenames.
-				for _, filename := range filenames {
-					found := false
-
-					for _, linkTag := range extraLinkTags {
-						if linkTag.Href == filename {
-							found = true
-
-							break
-						}
-					}
-
-					if !found {
-						extraLinkTags = append(extraLinkTags, LinkTag{
-							Href: filename,
-						})
-					}
-				}
-
-				// Last but not least, update the options.
-				options.ExtraLinkTags = extraLinkTags
-			}
-
-			// Next, let's handle the HTML <script> elements.
-			hasExtraScriptTags := len(options.ExtraScriptTags) > 0
-			hasScriptPaths := len(scriptPaths) > 0
-
-			if !hasExtraScriptTags && hasScriptPaths {
-				// First scenario: there is no JSON mapping, we simply add the
-				// paths.
-				options.ExtraScriptTags = make([]ScriptTag, len(scriptPaths))
-
-				for i, path := range scriptPaths {
-					options.ExtraScriptTags[i] = ScriptTag{
-						Src: filepath.Base(path),
-					}
-				}
-			} else if hasExtraScriptTags && hasScriptPaths {
-				// Second scenario: there are both files and a JSON mapping.
-
-				// First, find the filenames of the files.
-				filenames := make([]string, len(scriptPaths))
-				for i, path := range scriptPaths {
-					filenames[i] = filepath.Base(path)
-				}
-
-				var extraScriptTags []ScriptTag
-
-				// Then, let's find the filenames that exist in the JSON
-				// mapping, plus the entries that do only exist in the JSON
-				// mapping.
-				for _, scriptTagFromMapping := range options.ExtraScriptTags {
-					found := false
-
-					for _, filename := range filenames {
-						if scriptTagFromMapping.Src == filename {
-							extraScriptTags = append(extraScriptTags, scriptTagFromMapping)
-							found = true
-
-							break
-						}
-					}
-
-					if !found {
-						// This entry only exist in the JSON mapping.
-						extraScriptTags = append(extraScriptTags, scriptTagFromMapping)
-					}
-				}
-
-				// Then, add the remaining filenames.
-				for _, filename := range filenames {
-					found := false
-
-					for _, scriptTag := range extraScriptTags {
-						if scriptTag.Src == filename {
-							found = true
-
-							break
-						}
-					}
-
-					if !found {
-						extraScriptTags = append(extraScriptTags, ScriptTag{
-							Src: filename,
-						})
-					}
-				}
-
-				// Last but not least, update the options.
-				options.ExtraScriptTags = extraScriptTags
-			}
-
-			// For both <link> and <script> HTML elements, other scenarios are:
-			//
-			// 1. No files and no JSON mapping.
-			// 2. No files but JSON mapping.
-			//
-			// Nothing to do in such cases.
-
 			err = convertURL(ctx, chromium, engine, URL, PDFformat, options)
 			if err != nil {
 				return fmt.Errorf("convert URL to PDF: %w", err)
@@ -437,7 +272,7 @@ func convertMarkdownRoute(chromium API, engine gotenberg.PDFEngine) api.Route {
 							return "", nil
 						}

-						b, err := ioutil.ReadFile(path)
+						b, err := os.ReadFile(path)
 						if err != nil {
 							return "", fmt.Errorf("read markdown file '%s': %w", filename, err)
 						}
@@ -507,6 +342,16 @@ func convertURL(ctx *api.Context, chromium API, engine gotenberg.PDFEngine, URL,
 			)
 		}

+		if errors.Is(err, ErrOmitBackgroundWithoutPrintBackground) {
+			return api.WrapError(
+				fmt.Errorf("convert to PDF: %w", err),
+				api.NewSentinelHTTPError(
+					http.StatusBadRequest,
+					"omitBackground requires printBackground set to true",
+				),
+			)
+		}
+
 		if errors.Is(err, ErrInvalidEvaluationExpression) {
 			if options.WaitForExpression == "" {
 				// We do not expect the 'waitWindowStatus' form field to return
--- a/pkg/modules/chromium/routes_test.go
+++ b/pkg/modules/chromium/routes_test.go
@@ -3,7 +3,6 @@ package chromium
 import (
 	"context"
 	"errors"
-	"fmt"
 	"net/http"
 	"os"
 	"reflect"
@@ -17,16 +16,16 @@ import (

 func TestFormDataChromiumPDFOptions(t *testing.T) {
 	for i, tc := range []struct {
-		ctx     *api.MockContext
+		ctx     *api.ContextMock
 		options Options
 	}{
 		{
-			ctx:     &api.MockContext{Context: &api.Context{}},
+			ctx:     &api.ContextMock{Context: &api.Context{}},
 			options: DefaultOptions(),
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"extraHttpHeaders": {
 						"foo",
@@ -38,8 +37,8 @@ func TestFormDataChromiumPDFOptions(t *testing.T) {
 			options: DefaultOptions(),
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"extraHttpHeaders": {
 						`{"foo":"bar"}`,
@@ -58,8 +57,8 @@ func TestFormDataChromiumPDFOptions(t *testing.T) {
 			}(),
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"extraHttpHeaders": {
 						"foo",
@@ -71,8 +70,8 @@ func TestFormDataChromiumPDFOptions(t *testing.T) {
 			options: DefaultOptions(),
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"emulatedMediaType": {
 						"foo",
@@ -84,8 +83,8 @@ func TestFormDataChromiumPDFOptions(t *testing.T) {
 			options: DefaultOptions(),
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"emulatedMediaType": {
 						"screen",
@@ -112,7 +111,7 @@ func TestFormDataChromiumPDFOptions(t *testing.T) {

 func TestConvertURLHandler(t *testing.T) {
 	for i, tc := range []struct {
-		ctx                    *api.MockContext
+		ctx                    *api.ContextMock
 		api                    API
 		expectErr              bool
 		expectHTTPErr          bool
@@ -120,14 +119,14 @@ func TestConvertURLHandler(t *testing.T) {
 		expectOutputPathsCount int
 	}{
 		{
-			ctx:              &api.MockContext{Context: &api.Context{}},
+			ctx:              &api.ContextMock{Context: &api.Context{}},
 			expectErr:        true,
 			expectHTTPErr:    true,
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"url": {
 						"",
@@ -141,8 +140,8 @@ func TestConvertURLHandler(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"url": {
 						"foo",
@@ -162,8 +161,8 @@ func TestConvertURLHandler(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"url": {
 						"foo",
@@ -183,8 +182,8 @@ func TestConvertURLHandler(t *testing.T) {
 			expectOutputPathsCount: 1,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"url": {
 						"foo",
@@ -209,92 +208,8 @@ func TestConvertURLHandler(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"url": {
-						"foo",
-					},
-				})
-				ctx.SetFiles(map[string]string{
-					"b.css":  "/b.css",
-					"a.woff": "/a.woff",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, options Options) error {
-					expectOptions := DefaultOptions()
-					expectOptions.ExtraLinkTags = []LinkTag{
-						{
-							Href: "a.woff",
-						},
-						{
-							Href: "b.css",
-						},
-					}
-
-					if !reflect.DeepEqual(options, expectOptions) {
-						return fmt.Errorf("expected options %+v, but got: %+v", expectOptions, options)
-					}
-
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			expectOutputPathsCount: 1,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"url": {
-						"foo",
-					},
-					"extraLinkTags": {
-						`[{"href":"https://cdn.foo"},{"href":"b.css"}]`,
-					},
-				})
-				ctx.SetFiles(map[string]string{
-					"b.css":  "/b.css",
-					"a.woff": "/a.woff",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, options Options) error {
-					expectOptions := DefaultOptions()
-					expectOptions.ExtraLinkTags = []LinkTag{
-						{
-							Href: "https://cdn.foo",
-						},
-						{
-							Href: "b.css",
-						},
-						{
-							Href: "a.woff",
-						},
-					}
-
-					if !reflect.DeepEqual(options, expectOptions) {
-						return fmt.Errorf("expected options %+v, but got: %+v", expectOptions, options)
-					}
-
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			expectOutputPathsCount: 1,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"url": {
 						"foo",
@@ -319,82 +234,25 @@ func TestConvertURLHandler(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetValues(map[string][]string{
 					"url": {
 						"foo",
 					},
-				})
-				ctx.SetFiles(map[string]string{
-					"b.js": "/b.js",
-					"a.js": "/a.js",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, options Options) error {
-					expectOptions := DefaultOptions()
-					expectOptions.ExtraScriptTags = []ScriptTag{
-						{
-							Src: "a.js",
-						},
-						{
-							Src: "b.js",
-						},
-					}
-
-					if !reflect.DeepEqual(options, expectOptions) {
-						return fmt.Errorf("expected options %+v, but got: %+v", expectOptions, options)
-					}
-
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			expectOutputPathsCount: 1,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"url": {
-						"foo",
+					"extraLinkTags": {
+						`[{"href":"https://cdn.foo/foo.css"},{"href":"https://cdn.bar/bar.css"}]`,
 					},
 					"extraScriptTags": {
-						`[{"src":"https://cdn.foo"},{"src":"b.js"}]`,
+						`[{"src":"https://cdn.foo/foo.js"},{"src":"https://cdn.bar/bar.js"}]`,
 					},
 				})
-				ctx.SetFiles(map[string]string{
-					"b.js": "/b.js",
-					"a.js": "/a.js",
-				})

 				return ctx
 			}(),
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, options Options) error {
-					expectOptions := DefaultOptions()
-					expectOptions.ExtraScriptTags = []ScriptTag{
-						{
-							Src: "https://cdn.foo",
-						},
-						{
-							Src: "b.js",
-						},
-						{
-							Src: "a.js",
-						},
-					}
-
-					if !reflect.DeepEqual(options, expectOptions) {
-						return fmt.Errorf("expected options %+v, but got: %+v", expectOptions, options)
-					}
-
+				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
 					return nil
 				}

@@ -442,7 +300,7 @@ func TestConvertURLHandler(t *testing.T) {

 func TestConvertHTMLHandler(t *testing.T) {
 	for i, tc := range []struct {
-		ctx                    *api.MockContext
+		ctx                    *api.ContextMock
 		api                    API
 		expectErr              bool
 		expectHTTPErr          bool
@@ -450,14 +308,14 @@ func TestConvertHTMLHandler(t *testing.T) {
 		expectOutputPathsCount int
 	}{
 		{
-			ctx:              &api.MockContext{Context: &api.Context{}},
+			ctx:              &api.ContextMock{Context: &api.Context{}},
 			expectErr:        true,
 			expectHTTPErr:    true,
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"foo.html": "/foo/foo.html",
 				})
@@ -469,8 +327,8 @@ func TestConvertHTMLHandler(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"index.html": "/foo/foo.html",
 				})
@@ -488,8 +346,8 @@ func TestConvertHTMLHandler(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"index.html": "/foo/foo.html",
 				})
@@ -546,7 +404,7 @@ func TestConvertHTMLHandler(t *testing.T) {

 func TestConvertMarkdownHandler(t *testing.T) {
 	for i, tc := range []struct {
-		ctx                    *api.MockContext
+		ctx                    *api.ContextMock
 		api                    API
 		outputDir              string
 		expectErr              bool
@@ -555,14 +413,14 @@ func TestConvertMarkdownHandler(t *testing.T) {
 		expectOutputPathsCount int
 	}{
 		{
-			ctx:              &api.MockContext{Context: &api.Context{}},
+			ctx:              &api.ContextMock{Context: &api.Context{}},
 			expectErr:        true,
 			expectHTTPErr:    true,
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"foo.html": "/foo/foo.html",
 				})
@@ -574,8 +432,8 @@ func TestConvertMarkdownHandler(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"index.html": "/foo/foo.html",
 				})
@@ -587,8 +445,8 @@ func TestConvertMarkdownHandler(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"index.html":  "/foo/foo.html",
 					"markdown.md": "/foo/markdown.md",
@@ -599,8 +457,8 @@ func TestConvertMarkdownHandler(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"index.html":   "/tests/test/testdata/chromium/markdown/sample2/index.html",
 					"markdown1.md": "/foo/markdown1.md",
@@ -613,8 +471,8 @@ func TestConvertMarkdownHandler(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"index.html":   "/tests/test/testdata/chromium/markdown/sample1/index.html",
 					"markdown1.md": "/foo/markdown1.md",
@@ -633,8 +491,8 @@ func TestConvertMarkdownHandler(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"index.html":   "/tests/test/testdata/chromium/markdown/sample1/index.html",
 					"markdown1.md": "/tests/test/testdata/chromium/markdown/sample1/markdown1.md",
@@ -655,8 +513,8 @@ func TestConvertMarkdownHandler(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}

 				ctx.SetDirPath("/tmp/foo")
 				ctx.SetFiles(map[string]string{
@@ -680,8 +538,8 @@ func TestConvertMarkdownHandler(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}

 				ctx.SetDirPath("/tmp/foo")
 				ctx.SetFiles(map[string]string{
@@ -705,8 +563,8 @@ func TestConvertMarkdownHandler(t *testing.T) {
 			expectOutputPathsCount: 1,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}

 				ctx.SetDirPath("/tmp/foo")
 				ctx.SetFiles(map[string]string{
@@ -784,7 +642,7 @@ func TestConvertMarkdownHandler(t *testing.T) {

 func TestConvertURL(t *testing.T) {
 	for i, tc := range []struct {
-		ctx                    *api.MockContext
+		ctx                    *api.ContextMock
 		api                    API
 		engine                 gotenberg.PDFEngine
 		PDFformat              string
@@ -795,7 +653,7 @@ func TestConvertURL(t *testing.T) {
 		expectOutputPathsCount int
 	}{
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -810,7 +668,22 @@ func TestConvertURL(t *testing.T) {
 			expectHTTPStatus: http.StatusForbidden,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
+			api: func() API {
+				chromiumAPI := struct{ ProtoAPI }{}
+				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
+					return ErrOmitBackgroundWithoutPrintBackground
+				}
+
+				return chromiumAPI
+			}(),
+			options:          DefaultOptions(),
+			expectErr:        true,
+			expectHTTPErr:    true,
+			expectHTTPStatus: http.StatusForbidden,
+		},
+		{
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -823,7 +696,7 @@ func TestConvertURL(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -843,7 +716,7 @@ func TestConvertURL(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -858,7 +731,7 @@ func TestConvertURL(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -873,7 +746,7 @@ func TestConvertURL(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -888,7 +761,7 @@ func TestConvertURL(t *testing.T) {
 			expectHTTPStatus: http.StatusConflict,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -901,7 +774,7 @@ func TestConvertURL(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -924,7 +797,7 @@ func TestConvertURL(t *testing.T) {
 			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -945,7 +818,7 @@ func TestConvertURL(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
@@ -966,8 +839,8 @@ func TestConvertURL(t *testing.T) {
 			expectOutputPathsCount: 1,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetCancelled(true)

 				return ctx
@@ -984,7 +857,7 @@ func TestConvertURL(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			ctx: &api.MockContext{Context: &api.Context{}},
+			ctx: &api.ContextMock{Context: &api.Context{}},
 			api: func() API {
 				chromiumAPI := struct{ ProtoAPI }{}
 				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
--- a/pkg/modules/chromium/stream.go
+++ b/pkg/modules/chromium/stream.go
@@ -0,0 +1,117 @@
+package chromium
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/chromedp/cdproto/cdp"
+	cdprotoio "github.com/chromedp/cdproto/io"
+)
+
+// Credits: https://raw.githubusercontent.com/mafredri/cdp/3c5eab7ffc5cbee667b0a813ce470ac423792811/protocol/io/stream_reader.go.
+type streamReader struct {
+	ctx    context.Context
+	handle cdprotoio.StreamHandle
+	r      io.Reader
+	pos    int
+	eof    bool
+}
+
+// Read a chunk of the stream.
+func (reader *streamReader) Read(p []byte) (n int, err error) {
+	if reader.r != nil {
+		// Continue reading from buffer.
+		return reader.read(p)
+	}
+
+	if reader.eof {
+		return 0, io.EOF
+	}
+
+	if len(p) == 0 {
+		return 0, nil
+	}
+
+	// Chromium might have an off-by-one when deciding the maximum size (at
+	// least for base64 encoded data), usually it will overflow. We subtract
+	// one to make sure it fits into p.
+	size := len(p) - 1
+	if size < 1 {
+		// Safety-check to avoid crashing Chrome (e.g. via SetSize(-1)).
+		size = 1
+	}
+
+	reply, err := reader.next(reader.pos, size)
+	if err != nil {
+		return 0, err
+	}
+
+	reader.eof = reply.EOF
+
+	switch {
+	case reply.Base64encoded:
+		b := []byte(reply.Data)
+		size := base64.StdEncoding.DecodedLen(len(b))
+
+		// Safety-check for fast-path to avoid panics.
+		if len(p) >= size {
+			n, err = base64.StdEncoding.Decode(p, b)
+			reader.pos += n
+
+			return n, err
+		}
+
+		reader.r = base64.NewDecoder(base64.StdEncoding, bytes.NewReader(b))
+	default:
+		reader.r = strings.NewReader(reply.Data)
+	}
+
+	return reader.read(p)
+}
+
+// Close closes the stream, discard any temporary backing storage.
+func (reader *streamReader) Close() error {
+	err := cdprotoio.Close(reader.handle).Do(reader.ctx)
+	if err == nil {
+		return nil
+	}
+
+	return fmt.Errorf("close Chromium stream: %w", err)
+}
+
+func (reader *streamReader) next(pos, size int) (cdprotoio.ReadReturns, error) {
+	params := cdprotoio.
+		Read(reader.handle).
+		WithOffset(int64(pos)).
+		WithSize(int64(size))
+
+	var res cdprotoio.ReadReturns
+	err := cdp.Execute(reader.ctx, cdprotoio.CommandRead, params, &res)
+
+	if err == nil {
+		return res, nil
+	}
+
+	return res, fmt.Errorf("execute IO.read command: %w", err)
+}
+
+func (reader *streamReader) read(p []byte) (n int, err error) {
+	n, err = reader.r.Read(p)
+	reader.pos += n
+
+	if !reader.eof && err == io.EOF {
+		reader.r = nil
+		err = nil
+	}
+
+	return n, err
+}
+
+// Interface guards.
+var (
+	_ io.Reader = (*streamReader)(nil)
+)
--- a/pkg/modules/libreoffice/doc.go
+++ b/pkg/modules/libreoffice/doc.go
@@ -1,3 +1,3 @@
 // Package libreoffice provides a module which adds a route for converting
-// document to PDF with LibreOffice.
+// documents to PDF with LibreOffice.
 package libreoffice
--- a/pkg/modules/libreoffice/libreoffice.go
+++ b/pkg/modules/libreoffice/libreoffice.go
@@ -5,7 +5,7 @@ import (

 	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
 	"github.com/gotenberg/gotenberg/v7/pkg/modules/api"
-	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/unoconv"
+	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/uno"
 	flag "github.com/spf13/pflag"
 )

@@ -16,7 +16,7 @@ func init() {
 // LibreOffice is a module which provides a route for converting documents to
 // PDF with LibreOffice.
 type LibreOffice struct {
-	unoconv       unoconv.API
+	unoAPI        uno.API
 	engine        gotenberg.PDFEngine
 	disableRoutes bool
 }
@@ -40,17 +40,17 @@ func (mod *LibreOffice) Provision(ctx *gotenberg.Context) error {
 	flags := ctx.ParsedFlags()
 	mod.disableRoutes = flags.MustBool("libreoffice-disable-routes")

-	provider, err := ctx.Module(new(unoconv.Provider))
+	provider, err := ctx.Module(new(uno.Provider))
 	if err != nil {
-		return fmt.Errorf("get unoconv provider: %w", err)
+		return fmt.Errorf("get unoAPI provider: %w", err)
 	}

-	uno, err := provider.(unoconv.Provider).Unoconv()
+	unoAPI, err := provider.(uno.Provider).UNO()
 	if err != nil {
-		return fmt.Errorf("get unoconv API: %w", err)
+		return fmt.Errorf("get unoAPI API: %w", err)
 	}

-	mod.unoconv = uno
+	mod.unoAPI = unoAPI

 	provider, err = ctx.Module(new(gotenberg.PDFEngineProvider))
 	if err != nil {
@@ -74,7 +74,7 @@ func (mod LibreOffice) Routes() ([]api.Route, error) {
 	}

 	return []api.Route{
-		convertRoute(mod.unoconv, mod.engine),
+		convertRoute(mod.unoAPI, mod.engine),
 	}, nil
 }

--- a/pkg/modules/libreoffice/libreoffice_test.go
+++ b/pkg/modules/libreoffice/libreoffice_test.go
@@ -1,68 +1,14 @@
 package libreoffice

 import (
-	"context"
 	"errors"
 	"reflect"
 	"testing"

 	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/unoconv"
-	"go.uber.org/zap"
+	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/uno"
 )

-type ProtoModule struct {
-	descriptor func() gotenberg.ModuleDescriptor
-}
-
-func (mod ProtoModule) Descriptor() gotenberg.ModuleDescriptor {
-	return mod.descriptor()
-}
-
-type ProtoUnoconvProvider struct {
-	ProtoModule
-	unoconv func() (unoconv.API, error)
-}
-
-func (mod ProtoUnoconvProvider) Unoconv() (unoconv.API, error) {
-	return mod.unoconv()
-}
-
-type ProtoUnoconvAPI struct {
-	pdf        func(_ context.Context, _ *zap.Logger, _, _ string, _ unoconv.Options) error
-	extensions func() []string
-}
-
-func (mod ProtoUnoconvAPI) PDF(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options unoconv.Options) error {
-	return mod.pdf(ctx, logger, inputPath, outputPath, options)
-}
-
-func (mod ProtoUnoconvAPI) Extensions() []string {
-	return mod.extensions()
-}
-
-type ProtoPDFEngineProvider struct {
-	ProtoModule
-	pdfEngine func() (gotenberg.PDFEngine, error)
-}
-
-func (mod ProtoPDFEngineProvider) PDFEngine() (gotenberg.PDFEngine, error) {
-	return mod.pdfEngine()
-}
-
-type ProtoPDFEngine struct {
-	merge   func(_ context.Context, _ *zap.Logger, _ []string, _ string) error
-	convert func(_ context.Context, _ *zap.Logger, _, _, _ string) error
-}
-
-func (mod ProtoPDFEngine) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
-	return mod.merge(ctx, logger, inputPaths, outputPath)
-}
-
-func (mod ProtoPDFEngine) Convert(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
-	return mod.convert(ctx, logger, format, inputPath, outputPath)
-}
-
 func TestLibreOffice_Descriptor(t *testing.T) {
 	descriptor := LibreOffice{}.Descriptor()

@@ -75,15 +21,38 @@ func TestLibreOffice_Descriptor(t *testing.T) {
 }

 func TestLibreOffice_Provision(t *testing.T) {
-	for i, tc := range []struct {
-		ctx       *gotenberg.Context
-		expectErr bool
+	tests := []struct {
+		name               string
+		ctx                *gotenberg.Context
+		expectProvisionErr bool
 	}{
 		{
+			name: "nominal behavior",
 			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoModule }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
+				provider1 := struct {
+					gotenberg.ModuleMock
+					uno.ProviderMock
+				}{}
+				provider1.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider1
+					}}
+				}
+				provider1.UNOMock = func() (uno.API, error) {
+					return uno.APIMock{}, nil
+				}
+
+				provider2 := struct {
+					gotenberg.ModuleMock
+					gotenberg.PDFEngineProviderMock
+				}{}
+				provider2.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module {
+						return provider2
+					}}
+				}
+				provider2.PDFEngineMock = func() (gotenberg.PDFEngine, error) {
+					return gotenberg.PDFEngineMock{}, nil
 				}

 				return gotenberg.NewContext(
@@ -91,41 +60,36 @@ func TestLibreOffice_Provision(t *testing.T) {
 						FlagSet: new(LibreOffice).Descriptor().FlagSet,
 					},
 					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
+						provider1.Descriptor(),
+						provider2.Descriptor(),
 					},
 				)
 			}(),
-			expectErr: true,
 		},
 		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoUnoconvProvider }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.unoconv = func() (unoconv.API, error) {
-					return nil, errors.New("foo")
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(LibreOffice).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
+			name: "no UNO API provider",
+			ctx: gotenberg.NewContext(
+				gotenberg.ParsedFlags{
+					FlagSet: new(LibreOffice).Descriptor().FlagSet,
+				},
+				[]gotenberg.ModuleDescriptor{},
+			),
+			expectProvisionErr: true,
 		},
 		{
+			name: "no API from UNO API provider",
 			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoUnoconvProvider }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
+				provider := struct {
+					gotenberg.ModuleMock
+					uno.ProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
 				}
-				mod.unoconv = func() (unoconv.API, error) {
-					return struct{ ProtoUnoconvAPI }{}, nil
+				provider.UNOMock = func() (uno.API, error) {
+					return uno.APIMock{}, errors.New("foo")
 				}

 				return gotenberg.NewContext(
@@ -133,28 +97,26 @@ func TestLibreOffice_Provision(t *testing.T) {
 						FlagSet: new(LibreOffice).Descriptor().FlagSet,
 					},
 					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
+						provider.Descriptor(),
 					},
 				)
 			}(),
-			expectErr: true,
+			expectProvisionErr: true,
 		},
 		{
+			name: "no PDF engine provider",
 			ctx: func() *gotenberg.Context {
-				mod1 := struct{ ProtoUnoconvProvider }{}
-				mod1.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod1 }}
+				provider := struct {
+					gotenberg.ModuleMock
+					uno.ProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
 				}
-				mod1.unoconv = func() (unoconv.API, error) {
-					return struct{ ProtoUnoconvAPI }{}, nil
-				}
-
-				mod2 := struct{ ProtoPDFEngineProvider }{}
-				mod2.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return mod2 }}
-				}
-				mod2.pdfEngine = func() (gotenberg.PDFEngine, error) {
-					return nil, errors.New("foo")
+				provider.UNOMock = func() (uno.API, error) {
+					return uno.APIMock{}, nil
 				}

 				return gotenberg.NewContext(
@@ -162,29 +124,39 @@ func TestLibreOffice_Provision(t *testing.T) {
 						FlagSet: new(LibreOffice).Descriptor().FlagSet,
 					},
 					[]gotenberg.ModuleDescriptor{
-						mod1.Descriptor(),
-						mod2.Descriptor(),
+						provider.Descriptor(),
 					},
 				)
 			}(),
-			expectErr: true,
+			expectProvisionErr: true,
 		},
 		{
+			name: "no PDF engine from PDF engine provider",
 			ctx: func() *gotenberg.Context {
-				mod1 := struct{ ProtoUnoconvProvider }{}
-				mod1.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod1 }}
+				provider1 := struct {
+					gotenberg.ModuleMock
+					uno.ProviderMock
+				}{}
+				provider1.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider1
+					}}
 				}
-				mod1.unoconv = func() (unoconv.API, error) {
-					return struct{ ProtoUnoconvAPI }{}, nil
+				provider1.UNOMock = func() (uno.API, error) {
+					return uno.APIMock{}, nil
 				}

-				mod2 := struct{ ProtoPDFEngineProvider }{}
-				mod2.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return mod2 }}
+				provider2 := struct {
+					gotenberg.ModuleMock
+					gotenberg.PDFEngineProviderMock
+				}{}
+				provider2.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module {
+						return provider2
+					}}
 				}
-				mod2.pdfEngine = func() (gotenberg.PDFEngine, error) {
-					return struct{ ProtoPDFEngine }{}, nil
+				provider2.PDFEngineMock = func() (gotenberg.PDFEngine, error) {
+					return gotenberg.PDFEngineMock{}, errors.New("foo")
 				}

 				return gotenberg.NewContext(
@@ -192,59 +164,60 @@ func TestLibreOffice_Provision(t *testing.T) {
 						FlagSet: new(LibreOffice).Descriptor().FlagSet,
 					},
 					[]gotenberg.ModuleDescriptor{
-						mod1.Descriptor(),
-						mod2.Descriptor(),
+						provider1.Descriptor(),
+						provider2.Descriptor(),
 					},
 				)
 			}(),
+			expectProvisionErr: true,
 		},
-	} {
-		mod := new(LibreOffice)
-		err := mod.Provision(tc.ctx)
+	}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			mod := new(LibreOffice)
+			err := mod.Provision(tc.ctx)

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectProvisionErr && err == nil {
+				t.Error("expected mod.Provision() error, but got none")
+			}
+
+			if !tc.expectProvisionErr && err != nil {
+				t.Errorf("expected no error from mod.Provision(), but got: %v", err)
+			}
+		})
 	}
 }

 func TestLibreOffice_Routes(t *testing.T) {
-	for i, tc := range []struct {
-		expectRoutes  int
-		disableRoutes bool
+	tests := []struct {
+		name              string
+		mod               LibreOffice
+		expectRoutesCount int
 	}{
 		{
-			expectRoutes: 1,
+			name:              "route not disabled",
+			mod:               LibreOffice{},
+			expectRoutesCount: 1,
 		},
 		{
-			disableRoutes: true,
+			name: "route disabled",
+			mod: LibreOffice{
+				disableRoutes: true,
+			},
 		},
-	} {
-		mod := new(LibreOffice)
-		mod.disableRoutes = tc.disableRoutes
+	}

-		routes, err := mod.Routes()
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			routes, err := tc.mod.Routes()
+			if err != nil {
+				t.Fatalf("expected no error from mod.Routes(), but got: %v", err)
+			}

-		if tc.expectRoutes != len(routes) {
-			t.Errorf("test %d: expected %d routes but got %d", i, tc.expectRoutes, len(routes))
-		}
+			if tc.expectRoutesCount != len(routes) {
+				t.Errorf("expected %d routes from mod.Routes(), but got %d", tc.expectRoutesCount, len(routes))
+			}
+		})
 	}
 }
-
-// Interface guards.
-var (
-	_ gotenberg.Module            = (*ProtoModule)(nil)
-	_ unoconv.Provider            = (*ProtoUnoconvProvider)(nil)
-	_ gotenberg.Module            = (*ProtoUnoconvProvider)(nil)
-	_ unoconv.API                 = (*ProtoUnoconvAPI)(nil)
-	_ gotenberg.PDFEngineProvider = (*ProtoPDFEngineProvider)(nil)
-	_ gotenberg.Module            = (*ProtoPDFEngineProvider)(nil)
-	_ gotenberg.PDFEngine         = (*ProtoPDFEngine)(nil)
-)
--- a/pkg/modules/libreoffice/pdfengine/doc.go
+++ b/pkg/modules/libreoffice/pdfengine/doc.go
@@ -1,3 +1,4 @@
-// Package pdfengine provides a module which abstracts the CLI tool unoconv and
-// implements the gotenberg.PDFEngine interface.
+// Package pdfengine provides a module which interacts with the UNO
+// (Universal Network Objects) API and implements the gotenberg.PDFEngine
+// interface.
 package pdfengine
--- a/pkg/modules/libreoffice/pdfengine/pdfengine.go
+++ b/pkg/modules/libreoffice/pdfengine/pdfengine.go
@@ -2,75 +2,76 @@ package pdfengine

 import (
 	"context"
+	"errors"
 	"fmt"

 	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/unoconv"
+	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/uno"
 	"go.uber.org/zap"
 )

 func init() {
-	gotenberg.MustRegisterModule(UnoconvPDFEngine{})
+	gotenberg.MustRegisterModule(UNO{})
 }

-// UnoconvPDFEngine abstracts the CLI tool unoconv and implements the
-// gotenberg.PDFEngine interface.
-type UnoconvPDFEngine struct {
-	unoconv unoconv.API
+// UNO interacts with the UNO (Universal Network Objects) API and implements
+// the gotenberg.PDFEngine interface.
+type UNO struct {
+	unoAPI uno.API
 }

-// Descriptor returns a UnoconvPDFEngine's module descriptor.
-func (UnoconvPDFEngine) Descriptor() gotenberg.ModuleDescriptor {
+// Descriptor returns a UNO's module descriptor.
+func (UNO) Descriptor() gotenberg.ModuleDescriptor {
 	return gotenberg.ModuleDescriptor{
-		ID:  "unoconv-pdfengine",
-		New: func() gotenberg.Module { return new(UnoconvPDFEngine) },
+		ID:  "uno-pdfengine",
+		New: func() gotenberg.Module { return new(UNO) },
 	}
 }

 // Provision sets the module properties.
-func (engine *UnoconvPDFEngine) Provision(ctx *gotenberg.Context) error {
-	provider, err := ctx.Module(new(unoconv.Provider))
+func (engine *UNO) Provision(ctx *gotenberg.Context) error {
+	provider, err := ctx.Module(new(uno.Provider))
 	if err != nil {
 		return fmt.Errorf("get unoconv provider: %w", err)
 	}

-	uno, err := provider.(unoconv.Provider).Unoconv()
+	unoAPI, err := provider.(uno.Provider).UNO()
 	if err != nil {
 		return fmt.Errorf("get unoconv API: %w", err)
 	}

-	engine.unoconv = uno
+	engine.unoAPI = unoAPI

 	return nil
 }

 // Merge is not available for this PDF engine.
-func (engine UnoconvPDFEngine) Merge(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
+func (engine UNO) Merge(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
 	return fmt.Errorf("merge PDFs with unoconv: %w", gotenberg.ErrPDFEngineMethodNotAvailable)
 }

 // Convert converts the given PDF to a specific PDF format. Currently, only the
-// PDF/A-1 format is available. If another PDF format is requested, it returns
-// a gotenberg.ErrPDFFormatNotAvailable error.
-func (engine UnoconvPDFEngine) Convert(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
-	if format != gotenberg.FormatPDFA1a {
-		return fmt.Errorf("convert PDF to '%s' with unoconv: %w", format, gotenberg.ErrPDFFormatNotAvailable)
-	}
-
-	err := engine.unoconv.PDF(ctx, logger, inputPath, outputPath, unoconv.Options{
-		PDFArchive: true,
+// PDF/A-1a, PDF/A-2b and PDF/A-3b formats are available. If another PDF format
+// is requested, it returns a gotenberg.ErrPDFFormatNotAvailable error.
+func (engine UNO) Convert(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+	err := engine.unoAPI.PDF(ctx, logger, inputPath, outputPath, uno.Options{
+		PDFformat: format,
 	})

 	if err == nil {
 		return nil
 	}

+	if errors.Is(err, uno.ErrInvalidPDFformat) {
+		return fmt.Errorf("convert PDF to '%s' with unoconv: %w", format, gotenberg.ErrPDFFormatNotAvailable)
+	}
+
 	return fmt.Errorf("convert PDF to '%s' with unoconv: %w", format, err)
 }

 // Interface guards.
 var (
-	_ gotenberg.Module      = (*UnoconvPDFEngine)(nil)
-	_ gotenberg.Provisioner = (*UnoconvPDFEngine)(nil)
-	_ gotenberg.PDFEngine   = (*UnoconvPDFEngine)(nil)
+	_ gotenberg.Module      = (*UNO)(nil)
+	_ gotenberg.Provisioner = (*UNO)(nil)
+	_ gotenberg.PDFEngine   = (*UNO)(nil)
 )
--- a/pkg/modules/libreoffice/pdfengine/pdfengine_test.go
+++ b/pkg/modules/libreoffice/pdfengine/pdfengine_test.go
@@ -7,191 +7,168 @@ import (
 	"testing"

 	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/unoconv"
-	flag "github.com/spf13/pflag"
+	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/uno"
 	"go.uber.org/zap"
 )

-type ProtoModule struct {
-	descriptor func() gotenberg.ModuleDescriptor
-}
-
-func (mod ProtoModule) Descriptor() gotenberg.ModuleDescriptor {
-	return mod.descriptor()
-}
-
-type ProtoUnoconvProvider struct {
-	ProtoModule
-	unoconv func() (unoconv.API, error)
-}
-
-func (mod ProtoUnoconvProvider) Unoconv() (unoconv.API, error) {
-	return mod.unoconv()
-}
-
-type ProtoUnoconvAPI struct {
-	pdf func(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options unoconv.Options) error
-}
-
-func (mod ProtoUnoconvAPI) PDF(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options unoconv.Options) error {
-	return mod.pdf(ctx, logger, inputPath, outputPath, options)
-}
-
-func (mod ProtoUnoconvAPI) Extensions() []string {
-	return nil
-}
-
-func TestUnoconvPDFEngine_Descriptor(t *testing.T) {
-	descriptor := UnoconvPDFEngine{}.Descriptor()
+func TestUNO_Descriptor(t *testing.T) {
+	descriptor := UNO{}.Descriptor()

 	actual := reflect.TypeOf(descriptor.New())
-	expect := reflect.TypeOf(new(UnoconvPDFEngine))
+	expect := reflect.TypeOf(new(UNO))

 	if actual != expect {
 		t.Errorf("expected '%s' but got '%s'", expect, actual)
 	}
 }

-func TestUnoconvPDFEngine_Provision(t *testing.T) {
-	for i, tc := range []struct {
-		ctx       *gotenberg.Context
-		expectErr bool
+func TestUNO_Provider(t *testing.T) {
+	tests := []struct {
+		name               string
+		ctx                *gotenberg.Context
+		expectProvisionErr bool
 	}{
 		{
+			name: "nominal behavior",
 			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoModule }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
+				provider := struct {
+					gotenberg.ModuleMock
+					uno.ProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
+				}
+				provider.UNOMock = func() (uno.API, error) {
+					return uno.APIMock{}, nil
 				}

 				return gotenberg.NewContext(
 					gotenberg.ParsedFlags{
-						FlagSet: flag.NewFlagSet("foo", flag.ExitOnError),
+						FlagSet: new(UNO).Descriptor().FlagSet,
 					},
 					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
+						provider.Descriptor(),
 					},
 				)
 			}(),
-			expectErr: true,
 		},
 		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoUnoconvProvider }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.unoconv = func() (unoconv.API, error) {
-					return nil, errors.New("foo")
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: flag.NewFlagSet("foo", flag.ExitOnError),
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
+			name: "no UNO API provider",
+			ctx: gotenberg.NewContext(
+				gotenberg.ParsedFlags{
+					FlagSet: new(UNO).Descriptor().FlagSet,
+				},
+				[]gotenberg.ModuleDescriptor{},
+			),
+			expectProvisionErr: true,
 		},
 		{
+			name: "no API from UNO API provider",
 			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoUnoconvProvider }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
+				provider := struct {
+					gotenberg.ModuleMock
+					uno.ProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
 				}
-				mod.unoconv = func() (unoconv.API, error) {
-					return struct{ ProtoUnoconvAPI }{}, nil
+				provider.UNOMock = func() (uno.API, error) {
+					return uno.APIMock{}, errors.New("foo")
 				}

 				return gotenberg.NewContext(
 					gotenberg.ParsedFlags{
-						FlagSet: flag.NewFlagSet("foo", flag.ExitOnError),
+						FlagSet: new(UNO).Descriptor().FlagSet,
 					},
 					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
+						provider.Descriptor(),
 					},
 				)
 			}(),
+			expectProvisionErr: true,
 		},
-	} {
-		mod := new(UnoconvPDFEngine)
-		err := mod.Provision(tc.ctx)
+	}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			mod := new(UNO)
+			err := mod.Provision(tc.ctx)

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectProvisionErr && err == nil {
+				t.Error("expected mod.Provision() error, but got none")
+			}
+
+			if !tc.expectProvisionErr && err != nil {
+				t.Errorf("expected no error from mod.Provision(), but got: %v", err)
+			}
+		})
 	}
 }

-func TestUnoconvPDFEngine_Merge(t *testing.T) {
-	mod := new(UnoconvPDFEngine)
-	err := mod.Merge(context.TODO(), zap.NewNop(), nil, "")
+func TestUNO_Merge(t *testing.T) {
+	mod := new(UNO)
+	err := mod.Merge(context.Background(), zap.NewNop(), nil, "")

 	if !errors.Is(err, gotenberg.ErrPDFEngineMethodNotAvailable) {
-		t.Errorf("expected error %v, but got: %v", gotenberg.ErrPDFEngineMethodNotAvailable, err)
+		t.Errorf("expected error %v from mod.Merge(), but got: %v", gotenberg.ErrPDFEngineMethodNotAvailable, err)
 	}
 }

-func TestUnoconvPDFEngine_Convert(t *testing.T) {
-	for i, tc := range []struct {
-		api       unoconv.API
-		format    string
-		expectErr bool
+func TestUNO_Convert(t *testing.T) {
+	tests := []struct {
+		name             string
+		mod              UNO
+		expectConvertErr bool
 	}{
 		{
-			format:    "",
-			expectErr: true,
+			name: "nominal behavior",
+			mod: UNO{
+				unoAPI: uno.APIMock{
+					PDFMock: func(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options uno.Options) error {
+						return nil
+					},
+				},
+			},
 		},
 		{
-			api: func() unoconv.API {
-				unoconvAPI := struct{ ProtoUnoconvAPI }{}
-				unoconvAPI.pdf = func(_ context.Context, _ *zap.Logger, _, __ string, _ unoconv.Options) error {
-					return errors.New("foo")
-				}
-
-				return unoconvAPI
-			}(),
-			format:    gotenberg.FormatPDFA1a,
-			expectErr: true,
+			name: "invalid PDF format",
+			mod: UNO{
+				unoAPI: uno.APIMock{
+					PDFMock: func(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options uno.Options) error {
+						return uno.ErrInvalidPDFformat
+					},
+				},
+			},
+			expectConvertErr: true,
 		},
 		{
-			api: func() unoconv.API {
-				unoconvAPI := struct{ ProtoUnoconvAPI }{}
-				unoconvAPI.pdf = func(_ context.Context, _ *zap.Logger, _, __ string, _ unoconv.Options) error {
-					return nil
-				}
-
-				return unoconvAPI
-			}(),
-			format: gotenberg.FormatPDFA1a,
+			name: "convert fail",
+			mod: UNO{
+				unoAPI: uno.APIMock{
+					PDFMock: func(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options uno.Options) error {
+						return errors.New("foo")
+					},
+				},
+			},
+			expectConvertErr: true,
 		},
-	} {
-		mod := new(UnoconvPDFEngine)
-		mod.unoconv = tc.api
+	}

-		err := mod.Convert(context.TODO(), zap.NewNop(), tc.format, "", "")
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.mod.Convert(context.Background(), zap.NewNop(), "", "", "")

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+			if tc.expectConvertErr && err == nil {
+				t.Errorf("expected mod.Convert() error, but got none")
+			}

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if !tc.expectConvertErr && err != nil {
+				t.Fatalf("expected no error from mod.Convert(), but got: %v", err)
+			}
+		})
 	}
 }
-
-// Interface guards.
-var (
-	_ gotenberg.Module = (*ProtoModule)(nil)
-	_ unoconv.Provider = (*ProtoUnoconvProvider)(nil)
-	_ gotenberg.Module = (*ProtoUnoconvProvider)(nil)
-	_ unoconv.API      = (*ProtoUnoconvAPI)(nil)
-)
--- a/pkg/modules/libreoffice/routes.go
+++ b/pkg/modules/libreoffice/routes.go
@@ -7,13 +7,13 @@ import (

 	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
 	"github.com/gotenberg/gotenberg/v7/pkg/modules/api"
-	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/unoconv"
+	"github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/uno"
 	"github.com/labstack/echo/v4"
 )

 // convertRoute returns an api.Route which can convert LibreOffice documents
 // to PDF.
-func convertRoute(uno unoconv.API, engine gotenberg.PDFEngine) api.Route {
+func convertRoute(unoAPI uno.API, engine gotenberg.PDFEngine) api.Route {
 	return api.Route{
 		Method:      http.MethodPost,
 		Path:        "/forms/libreoffice/convert",
@@ -27,15 +27,17 @@ func convertRoute(uno unoconv.API, engine gotenberg.PDFEngine) api.Route {
 				landscape          bool
 				nativePageRanges   string
 				nativePDFA1aFormat bool
+				nativePDFformat    string
 				PDFformat          string
 				merge              bool
 			)

 			err := ctx.FormData().
-				MandatoryPaths(uno.Extensions(), &inputPaths).
+				MandatoryPaths(unoAPI.Extensions(), &inputPaths).
 				Bool("landscape", &landscape, false).
 				String("nativePageRanges", &nativePageRanges, "").
 				Bool("nativePdfA1aFormat", &nativePDFA1aFormat, false).
+				String("nativePdfFormat", &nativePDFformat, "").
 				String("pdfFormat", &PDFformat, "").
 				Bool("merge", &merge, false).
 				Validate()
@@ -44,13 +46,35 @@ func convertRoute(uno unoconv.API, engine gotenberg.PDFEngine) api.Route {
 				return fmt.Errorf("validate form data: %w", err)
 			}

+			if nativePDFA1aFormat {
+				ctx.Log().Warn("'nativePdfA1aFormat' is deprecated; prefer 'nativePdfFormat' or 'pdfFormat' form fields instead")
+			}
+
+			if nativePDFA1aFormat && nativePDFformat != "" {
+				return api.WrapError(
+					errors.New("got both 'nativePdfFormat' and 'nativePdfA1aFormat' form fields"),
+					api.NewSentinelHTTPError(http.StatusBadRequest, "Both 'nativePdfFormat' and 'nativePdfA1aFormat' form fields are provided"),
+				)
+			}
+
 			if nativePDFA1aFormat && PDFformat != "" {
 				return api.WrapError(
-					errors.New("got both 'pdfFormat' and 'nativePdfA1aFormat' form values"),
-					api.NewSentinelHTTPError(http.StatusBadRequest, "Both 'pdfFormat' and 'nativePdfA1aFormat' form values are provided"),
+					errors.New("got both 'pdfFormat' and 'nativePdfA1aFormat' form fields"),
+					api.NewSentinelHTTPError(http.StatusBadRequest, "Both 'pdfFormat' and 'nativePdfA1aFormat' form fields are provided"),
 				)
 			}

+			if nativePDFformat != "" && PDFformat != "" {
+				return api.WrapError(
+					errors.New("got both 'pdfFormat' and 'nativePdfFormat' form fields"),
+					api.NewSentinelHTTPError(http.StatusBadRequest, "Both 'pdfFormat' and 'nativePdfFormat' form fields are provided"),
+				)
+			}
+
+			if nativePDFA1aFormat {
+				nativePDFformat = gotenberg.FormatPDFA1a
+			}
+
 			// Alright, let's convert each document to PDF.

 			outputPaths := make([]string, len(inputPaths))
@@ -58,16 +82,16 @@ func convertRoute(uno unoconv.API, engine gotenberg.PDFEngine) api.Route {
 			for i, inputPath := range inputPaths {
 				outputPaths[i] = ctx.GeneratePath(".pdf")

-				options := unoconv.Options{
+				options := uno.Options{
 					Landscape:  landscape,
 					PageRanges: nativePageRanges,
-					PDFArchive: nativePDFA1aFormat,
+					PDFformat:  nativePDFformat,
 				}

-				err = uno.PDF(ctx, ctx.Log(), inputPath, outputPaths[i], options)
+				err = unoAPI.PDF(ctx, ctx.Log(), inputPath, outputPaths[i], options)

 				if err != nil {
-					if errors.Is(err, unoconv.ErrMalformedPageRanges) {
+					if errors.Is(err, uno.ErrMalformedPageRanges) {
 						return api.WrapError(
 							fmt.Errorf("convert to PDF: %w", err),
 							api.NewSentinelHTTPError(http.StatusBadRequest, fmt.Sprintf("Malformed page ranges '%s' (nativePageRanges)", options.PageRanges)),
@@ -92,10 +116,8 @@ func convertRoute(uno unoconv.API, engine gotenberg.PDFEngine) api.Route {
 				// Now, let's check if the client want to convert this result
 				// PDF to a specific PDF format.

-				// Note: nativePdfA1aFormat has not been specified if we reach
-				// this part of the code. Indeed, the handler returns early on
-				// an error if both nativePdfA1aFormat and pdfFormat are
-				// present.
+				// Note: nativePdfA1aFormat/nativePdfFormat have not been
+				// specified if PDFformat is not empty.

 				if PDFformat != "" {
 					convertInputPath := outputPath
@@ -135,9 +157,8 @@ func convertRoute(uno unoconv.API, engine gotenberg.PDFEngine) api.Route {
 			// Ok, we don't have to merge the PDFs. Let's check if the client
 			// want to convert each PDF to a specific PDF format.

-			// Note: nativePdfA1aFormat has not been specified if we reach this
-			// part of the code. Indeed, the handler returns early on an error
-			// if both nativePdfA1aFormat and pdfFormat are present.
+			// Note: nativePdfA1aFormat/nativePdfFormat have not been
+			// specified if PDFformat is not empty.

 			if PDFformat != "" {
 				convertOutputPaths := make([]string, len(outputPaths))
--- a/pkg/modules/libreoffice/routes_test.go
+++ b/pkg/modules/libreoffice/routes_test.go
--- a/pkg/modules/libreoffice/uno/doc.go
+++ b/pkg/modules/libreoffice/uno/doc.go
@@ -0,0 +1,3 @@
+// Package uno provides a module which interacts with the UNO
+// (Universal Network Objects) API.
+package uno
--- a/pkg/modules/libreoffice/unoconv/freeport.go
+++ b/pkg/modules/libreoffice/unoconv/freeport.go
@@ -1,4 +1,4 @@
-package unoconv
+package uno

 import (
 	"fmt"
@@ -9,18 +9,18 @@ import (
 )

 func freePort(logger *zap.Logger) (int, error) {
-	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	netListener, err := net.Listen("tcp", "127.0.0.1:0")
 	if err != nil {
 		return 0, fmt.Errorf("listen on the local network address: %w", err)
 	}
 	defer func() {
-		err := listener.Close()
+		err := netListener.Close()
 		if err != nil {
-			logger.Error(fmt.Sprintf("close listener: %s", err.Error()))
+			logger.Error(fmt.Sprintf("close network listener: %s", err.Error()))
 		}
 	}()

-	addr := listener.Addr().String()
+	addr := netListener.Addr().String()

 	_, portStr, err := net.SplitHostPort(addr)
 	if err != nil {
--- a/pkg/modules/libreoffice/uno/listener.go
+++ b/pkg/modules/libreoffice/uno/listener.go
@@ -0,0 +1,379 @@
+package uno
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"os"
+	"sync"
+	"time"
+
+	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
+	"go.uber.org/zap"
+)
+
+type listener interface {
+	start(logger *zap.Logger) error
+	stop(logger *zap.Logger) error
+	restart(logger *zap.Logger) error
+	lock(ctx context.Context, logger *zap.Logger) error
+	unlock(logger *zap.Logger) error
+	port() int
+	queue() int
+	healthy() bool
+}
+
+// TODO: this implementation, even if it's working, is way too complex.
+type libreOfficeListener struct {
+	binPath      string
+	startTimeout time.Duration
+	threshold    int
+
+	socketPort         int
+	userProfileDirPath string
+	cmd                gotenberg.Cmd
+	cfgMu              sync.RWMutex
+
+	usage           int
+	hadFirstStart   bool
+	hadFirstStartMu sync.RWMutex
+	restarting      bool
+	restartingMu    sync.RWMutex
+	queueLength     int
+	queueLengthMu   sync.RWMutex
+	lockChan        chan struct{}
+	logger          *zap.Logger
+}
+
+func newLibreOfficeListener(logger *zap.Logger, binPath string, startTimeout time.Duration, threshold int) listener {
+	return &libreOfficeListener{
+		binPath:      binPath,
+		startTimeout: startTimeout,
+		threshold:    threshold,
+		lockChan:     make(chan struct{}, 1),
+		logger:       logger.Named("listener"),
+	}
+}
+
+func (listener *libreOfficeListener) start(logger *zap.Logger) error {
+	listener.hadFirstStartMu.Lock()
+	listener.hadFirstStart = true
+	listener.hadFirstStartMu.Unlock()
+
+	port, err := freePort(logger)
+	if err != nil {
+		return fmt.Errorf("get free port: %w", err)
+	}
+
+	// Good to know: the garbage collector might delete the next directory
+	// while it is still running. It does seem to cause any issue though.
+	userProfileDirPath := gotenberg.NewDirPath()
+
+	args := []string{
+		"--headless",
+		"--invisible",
+		"--nocrashreport",
+		"--nodefault",
+		"--nologo",
+		"--nofirststartwizard",
+		"--norestore",
+		fmt.Sprintf("-env:UserInstallation=file://%s", userProfileDirPath),
+		fmt.Sprintf("--accept=socket,host=127.0.0.1,port=%d,tcpNoDelay=1;urp;StarOffice.ComponentContext", port),
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), listener.startTimeout)
+	defer cancel()
+
+	cmd, err := gotenberg.CommandContext(ctx, logger, listener.binPath, args...)
+	if err != nil {
+		return fmt.Errorf("create LibreOffice listener command: %w", err)
+	}
+
+	// For whatever reason, LibreOffice requires a first start before being
+	// able to run as a daemon.
+	exitCode, err := cmd.Exec()
+	if err != nil && exitCode != 81 {
+		return fmt.Errorf("execute LibreOffice listener: %w", err)
+	}
+
+	logger.Debug("got exit code 81, e.g., LibreOffice listener first start")
+
+	// Second start (daemon).
+	cmd = gotenberg.Command(logger, listener.binPath, args...)
+
+	err = cmd.Start()
+	if err != nil {
+		return fmt.Errorf("start LibreOffice listener: %w", err)
+	}
+
+	waitChan := make(chan error, 1)
+
+	go func() {
+		// By waiting the process, we avoid the creation of a zombie process
+		// and make sure we catch an early exit if any.
+		waitChan <- cmd.Wait()
+	}()
+
+	connChan := make(chan error, 1)
+
+	go func() {
+		// As the LibreOffice socket may take some time to be available, we
+		// have to ensure that it is indeed accepting connections.
+		for {
+			if ctx.Err() != nil {
+				connChan <- ctx.Err()
+				break
+			}
+
+			conn, err := net.DialTimeout("tcp", fmt.Sprintf("127.0.0.1:%d", port), time.Duration(1)*time.Second)
+			if err != nil {
+				continue
+			}
+
+			connChan <- nil
+			err = conn.Close()
+			if err != nil {
+				logger.Debug(fmt.Sprintf("close connection after health checking the LibreOffice listener: %v", err))
+			}
+
+			break
+		}
+	}()
+
+	var success bool
+
+	defer func() {
+		if success {
+			listener.cfgMu.Lock()
+			listener.socketPort = port
+			listener.userProfileDirPath = userProfileDirPath
+			listener.cmd = cmd
+			listener.cfgMu.Unlock()
+
+			return
+		}
+
+		// Let's make sure the process is killed.
+		err = cmd.Kill()
+		if err != nil {
+			logger.Debug(fmt.Sprintf("kill LibreOffice listener process: %v", err))
+		}
+	}()
+
+	logger.Debug("waiting for the LibreOffice listener socket to be available...")
+
+	for {
+		select {
+		case err = <-connChan:
+			if err != nil {
+				return fmt.Errorf("LibreOffice listener socket not available: %w", err)
+			}
+
+			logger.Debug("LibreOffice listener socket available")
+			success = true
+
+			return nil
+		case err = <-waitChan:
+			return fmt.Errorf("LibreOffice listener process exited: %w", err)
+		}
+	}
+}
+
+func (listener *libreOfficeListener) stop(logger *zap.Logger) error {
+	listener.cfgMu.RLock()
+
+	defer func() {
+		defer listener.cfgMu.RUnlock()
+
+		err := os.RemoveAll(listener.userProfileDirPath)
+		if err != nil {
+			logger.Error(fmt.Sprintf("remove LibreOffice listener user profile directory: %v", err))
+		}
+	}()
+
+	err := listener.cmd.Kill()
+	if err != nil {
+		return fmt.Errorf("kill LibreOffice listener process: %w", err)
+	}
+
+	return nil
+}
+
+func (listener *libreOfficeListener) restart(logger *zap.Logger) error {
+	listener.restartingMu.Lock()
+	listener.restarting = true
+	listener.restartingMu.Unlock()
+
+	defer func() {
+		listener.restartingMu.Lock()
+		listener.restarting = false
+		listener.restartingMu.Unlock()
+	}()
+
+	err := listener.stop(logger)
+	if err != nil {
+		return fmt.Errorf("stop LibreOffice listener: %w", err)
+	}
+
+	err = listener.start(logger)
+	if err != nil {
+		return fmt.Errorf("start LibreOffice listener: %w", err)
+	}
+
+	listener.usage = 0
+
+	return nil
+}
+
+func (listener *libreOfficeListener) lock(ctx context.Context, logger *zap.Logger) error {
+	listener.queueLengthMu.Lock()
+	listener.queueLength += 1
+	listener.queueLengthMu.Unlock()
+
+	defer func() {
+		listener.queueLengthMu.Lock()
+		listener.queueLength -= 1
+		listener.queueLengthMu.Unlock()
+	}()
+
+	doWithContext := func(ctx context.Context, do func() error) error {
+		doChan := make(chan error, 1)
+
+		go func() {
+			doChan <- do()
+		}()
+
+		for {
+			select {
+			case err := <-doChan:
+				return err
+			case <-ctx.Done():
+				return ctx.Err()
+			}
+		}
+	}
+
+	select {
+	case listener.lockChan <- struct{}{}:
+		logger.Debug("LibreOffice listener lock acquired")
+
+		listener.hadFirstStartMu.RLock()
+
+		if !listener.hadFirstStart {
+			listener.hadFirstStartMu.RUnlock()
+
+			logger.Debug("starting LibreOffice listener...")
+
+			err := doWithContext(ctx, func() error {
+				return listener.start(logger)
+			})
+
+			if err == nil {
+				return nil
+			}
+
+			return fmt.Errorf("start long-running LibreOffice listener: %w", err)
+		}
+
+		listener.hadFirstStartMu.RUnlock()
+
+		if !listener.healthy() {
+			logger.Debug("LibreOffice listener is unhealthy, restarting it...")
+
+			err := doWithContext(ctx, func() error {
+				return listener.restart(logger)
+			})
+
+			if err == nil {
+				return nil
+			}
+
+			return fmt.Errorf("restart long-running LibreOffice listener: %w", err)
+		}
+
+		return nil
+	case <-ctx.Done():
+		logger.Debug("failed to acquire LibreOffice listener lock before deadline")
+
+		return fmt.Errorf("acquire LibreOffice listener lock: %w", ctx.Err())
+	}
+}
+
+func (listener *libreOfficeListener) unlock(logger *zap.Logger) error {
+	defer func() {
+		<-listener.lockChan
+		logger.Debug("LibreOffice listener lock released")
+	}()
+
+	if !listener.healthy() {
+		logger.Debug("LibreOffice listener is unhealthy, restarting it...")
+
+		err := listener.restart(logger)
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("restart LibreOffice listener: %w", err)
+	}
+
+	listener.usage += 1
+	if listener.usage < listener.threshold {
+		return nil
+	}
+
+	logger.Debug("LibreOffice listener threshold reached, restarting it...")
+
+	err := listener.restart(logger)
+	if err == nil {
+		return nil
+	}
+
+	return fmt.Errorf("restart LibreOffice listener: %w", err)
+}
+
+func (listener *libreOfficeListener) port() int {
+	listener.cfgMu.RLock()
+	defer listener.cfgMu.RUnlock()
+
+	return listener.socketPort
+}
+
+func (listener *libreOfficeListener) queue() int {
+	listener.queueLengthMu.RLock()
+	defer listener.queueLengthMu.RUnlock()
+
+	return listener.queueLength
+}
+
+func (listener *libreOfficeListener) healthy() bool {
+	listener.hadFirstStartMu.RLock()
+	defer listener.hadFirstStartMu.RUnlock()
+
+	if !listener.hadFirstStart {
+		return true
+	}
+
+	listener.restartingMu.RLock()
+	defer listener.restartingMu.RUnlock()
+
+	if listener.restarting {
+		return true
+	}
+
+	conn, err := net.DialTimeout("tcp", fmt.Sprintf("127.0.0.1:%d", listener.port()), time.Duration(1)*time.Second)
+	if err == nil {
+		err := conn.Close()
+		if err != nil {
+			listener.logger.Debug(fmt.Sprintf("close connection after health checking the LibreOffice listener: %v", err))
+		}
+
+		return true
+	}
+
+	return false
+}
+
+// Interface guards.
+var (
+	_ listener = (*libreOfficeListener)(nil)
+)
--- a/pkg/modules/libreoffice/uno/listener_test.go
+++ b/pkg/modules/libreoffice/uno/listener_test.go
@@ -0,0 +1,431 @@
+package uno
+
+import (
+	"context"
+	"os"
+	"testing"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+func TestListener_start(t *testing.T) {
+	tests := []struct {
+		name           string
+		listener       listener
+		expectStartErr bool
+	}{
+		{
+			name:     "nominal behavior",
+			listener: newLibreOfficeListener(zap.NewNop(), os.Getenv("LIBREOFFICE_BIN_PATH"), time.Duration(10)*time.Second, 10),
+		},
+		{
+			name:           "non-exit code 81 on first start",
+			listener:       newLibreOfficeListener(zap.NewNop(), "foo", time.Duration(10)*time.Second, 10),
+			expectStartErr: true,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.listener.start(zap.NewNop())
+
+			if tc.expectStartErr && err == nil {
+				t.Fatalf("expected listener.start() error, but got none")
+			}
+
+			if !tc.expectStartErr && err != nil {
+				t.Fatalf("expected no error from listener.start(), but got: %v", err)
+			}
+
+			if err != nil {
+				if tc.listener.healthy() {
+					t.Error("expected a non-running LibreOffice listener")
+				}
+
+				return
+			}
+
+			err = tc.listener.stop(zap.NewNop())
+			if err != nil {
+				t.Fatalf("expected no error from listener.stop(), but got: %v", err)
+			}
+		})
+	}
+}
+
+func TestListener_stop(t *testing.T) {
+	listener := newLibreOfficeListener(
+		zap.NewNop(),
+		os.Getenv("LIBREOFFICE_BIN_PATH"),
+		time.Duration(10)*time.Second,
+		10,
+	)
+
+	err := listener.start(zap.NewNop())
+	if err != nil {
+		t.Fatalf("expected no error from listener.start(), but got: %v", err)
+	}
+
+	err = listener.stop(zap.NewNop())
+	if err != nil {
+		t.Errorf("expected no error from listener.stop(), but got: %v", err)
+	}
+}
+
+func TestListener_restart(t *testing.T) {
+	listener := newLibreOfficeListener(
+		zap.NewNop(),
+		os.Getenv("LIBREOFFICE_BIN_PATH"),
+		time.Duration(10)*time.Second,
+		10,
+	)
+
+	err := listener.start(zap.NewNop())
+	if err != nil {
+		t.Fatalf("expected no error from listener.start(), but got: %v", err)
+	}
+
+	err = listener.restart(zap.NewNop())
+	if err != nil {
+		t.Errorf("expected no error from listener.stop(), but got: %v", err)
+	}
+
+	if !listener.healthy() {
+		t.Error("expected an healthy LibreOffice listener")
+	}
+}
+
+func TestListener_lock(t *testing.T) {
+	tests := []struct {
+		name          string
+		listener      listener
+		ctx           context.Context
+		teardown      func(listener listener) error
+		expectLockErr bool
+	}{
+		{
+			name: "nominal behavior",
+			listener: func() listener {
+				listener := newLibreOfficeListener(zap.NewNop(), os.Getenv("LIBREOFFICE_BIN_PATH"), time.Duration(10)*time.Second, 10)
+
+				err := listener.start(zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.start(), but got: %v", err)
+				}
+
+				return listener
+			}(),
+			ctx: context.Background(),
+			teardown: func(listener listener) error {
+				return listener.stop(zap.NewNop())
+			},
+		},
+		{
+			name:     "first start",
+			listener: newLibreOfficeListener(zap.NewNop(), os.Getenv("LIBREOFFICE_BIN_PATH"), time.Duration(10)*time.Second, 10),
+			ctx:      context.Background(),
+			teardown: func(listener listener) error {
+				return listener.stop(zap.NewNop())
+			},
+		},
+		{
+			name: "unhealthy listener",
+			listener: func() listener {
+				listener := newLibreOfficeListener(zap.NewNop(), os.Getenv("LIBREOFFICE_BIN_PATH"), time.Duration(10)*time.Second, 10)
+
+				err := listener.start(zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.start(), but got: %v", err)
+				}
+
+				err = listener.stop(zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.stop(), but got: %v", err)
+				}
+
+				return listener
+			}(),
+			ctx: context.Background(),
+			teardown: func(listener listener) error {
+				return listener.stop(zap.NewNop())
+			},
+		},
+		{
+			name: "context done",
+			listener: func() listener {
+				listener := newLibreOfficeListener(zap.NewNop(), os.Getenv("LIBREOFFICE_BIN_PATH"), time.Duration(10)*time.Second, 10)
+
+				err := listener.start(zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.start(), but got: %v", err)
+				}
+
+				err = listener.lock(context.Background(), zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.lock(), but got: %v", err)
+				}
+
+				return listener
+			}(),
+			ctx: func() context.Context {
+				ctx, cancel := context.WithCancel(context.Background())
+				cancel()
+
+				return ctx
+			}(),
+			expectLockErr: true,
+			teardown: func(listener listener) error {
+				return listener.stop(zap.NewNop())
+			},
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			defer func() {
+				err := tc.teardown(tc.listener)
+				if err != nil {
+					t.Errorf("expected no error from tc.teardown(), but got: %v", err)
+				}
+			}()
+
+			err := tc.listener.lock(tc.ctx, zap.NewNop())
+
+			if tc.expectLockErr && err == nil {
+				t.Fatalf("expected listener.lock() error, but got none")
+			}
+
+			if !tc.expectLockErr && err != nil {
+				t.Fatalf("expected no error from listener.lock(), but got: %v", err)
+			}
+		})
+	}
+}
+
+func TestListener_unlock(t *testing.T) {
+	tests := []struct {
+		name     string
+		listener listener
+		teardown func(listener listener) error
+	}{
+		{
+			name: "nominal behavior",
+			listener: func() listener {
+				listener := newLibreOfficeListener(zap.NewNop(), os.Getenv("LIBREOFFICE_BIN_PATH"), time.Duration(10)*time.Second, 10)
+
+				err := listener.start(zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.start(), but got: %v", err)
+				}
+
+				err = listener.lock(context.Background(), zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.lock(), but got: %v", err)
+				}
+
+				return listener
+			}(),
+			teardown: func(listener listener) error {
+				return listener.stop(zap.NewNop())
+			},
+		},
+		{
+			name: "unhealthy listener",
+			listener: func() listener {
+				listener := newLibreOfficeListener(zap.NewNop(), os.Getenv("LIBREOFFICE_BIN_PATH"), time.Duration(10)*time.Second, 10)
+
+				err := listener.start(zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.start(), but got: %v", err)
+				}
+
+				err = listener.lock(context.Background(), zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.lock(), but got: %v", err)
+				}
+
+				err = listener.stop(zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.stop(), but got: %v", err)
+				}
+
+				return listener
+			}(),
+			teardown: func(listener listener) error {
+				return listener.stop(zap.NewNop())
+			},
+		},
+		{
+			name: "threshold reached",
+			listener: func() listener {
+				listener := newLibreOfficeListener(zap.NewNop(), os.Getenv("LIBREOFFICE_BIN_PATH"), time.Duration(10)*time.Second, 1)
+
+				err := listener.start(zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.start(), but got: %v", err)
+				}
+
+				err = listener.lock(context.Background(), zap.NewNop())
+				if err != nil {
+					t.Fatalf("expected no error from listener.lock(), but got: %v", err)
+				}
+
+				return listener
+			}(),
+			teardown: func(listener listener) error {
+				return listener.stop(zap.NewNop())
+			},
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			defer func() {
+				err := tc.teardown(tc.listener)
+				if err != nil {
+					t.Errorf("expected no error from tc.teardown(), but got: %v", err)
+				}
+			}()
+
+			err := tc.listener.unlock(zap.NewNop())
+			if err != nil {
+				t.Errorf("expected no error from listener.unlock(), but got: %v", err)
+			}
+		})
+	}
+}
+
+func TestListener_port(t *testing.T) {
+	listener := newLibreOfficeListener(
+		zap.NewNop(),
+		os.Getenv("LIBREOFFICE_BIN_PATH"),
+		time.Duration(10)*time.Second,
+		10,
+	)
+
+	err := listener.start(zap.NewNop())
+	if err != nil {
+		t.Fatalf("expected no error from listener.start(), but got: %v", err)
+	}
+
+	port := listener.port()
+	if port == 0 {
+		t.Error("expected a non-zero value from listener.port")
+	}
+
+	err = listener.stop(zap.NewNop())
+	if err != nil {
+		t.Errorf("expected no error from listener.stop(), but got: %v", err)
+	}
+}
+
+func TestListener_queue(t *testing.T) {
+	listener := newLibreOfficeListener(
+		zap.NewNop(),
+		os.Getenv("LIBREOFFICE_BIN_PATH"),
+		time.Duration(10)*time.Second,
+		10,
+	)
+
+	err := listener.start(zap.NewNop())
+	if err != nil {
+		t.Fatalf("expected no error from listener.start(), but got: %v", err)
+	}
+
+	defer func() {
+		err := listener.stop(zap.NewNop())
+		if err != nil {
+			t.Errorf("expected no error from listener.stop(), but got: %v", err)
+		}
+	}()
+
+	queueLength := listener.queue()
+	if queueLength != 0 {
+		t.Fatalf("expected a zero value from listener.queue(), but got %d", queueLength)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(10)*time.Second)
+
+	err = listener.lock(ctx, zap.NewNop())
+	if err != nil {
+		t.Fatalf("expected no error from listener.lock(), but got: %v", err)
+	}
+
+	queueLength = listener.queue()
+	if queueLength != 0 {
+		t.Fatalf("expected a zero value from listener.queue(), but got %d", queueLength)
+	}
+
+	go func() {
+		_ = listener.lock(ctx, zap.NewNop())
+	}()
+
+	time.Sleep(time.Duration(100) * time.Millisecond)
+
+	queueLength = listener.queue()
+	if queueLength != 1 {
+		t.Fatalf("expected 1 from listener.queue(), but got %d", queueLength)
+	}
+
+	go func() {
+		_ = listener.lock(ctx, zap.NewNop())
+	}()
+
+	time.Sleep(time.Duration(100) * time.Millisecond)
+
+	queueLength = listener.queue()
+	if queueLength != 2 {
+		t.Fatalf("expected 2 from listener.queue(), but got %d", queueLength)
+	}
+
+	cancel()
+
+	time.Sleep(time.Duration(100) * time.Millisecond)
+
+	queueLength = listener.queue()
+	if queueLength != 0 {
+		t.Fatalf("expected a zero value from listener.queue(), but got %d", queueLength)
+	}
+}
+
+func TestListener_healthy(t *testing.T) {
+	listener := &libreOfficeListener{
+		binPath:      os.Getenv("LIBREOFFICE_BIN_PATH"),
+		startTimeout: time.Duration(10) * time.Second,
+		threshold:    10,
+		lockChan:     make(chan struct{}, 1),
+		logger:       zap.NewNop(),
+	}
+
+	// i.e., first start.
+	if !listener.healthy() {
+		t.Error("expected an healthy LibreOffice listener")
+	}
+
+	err := listener.start(zap.NewNop())
+	if err != nil {
+		t.Fatalf("expected no error from listener.start(), but got: %v", err)
+	}
+
+	if !listener.healthy() {
+		t.Error("expected an healthy LibreOffice listener")
+	}
+
+	err = listener.stop(zap.NewNop())
+	if err != nil {
+		t.Fatalf("expected no error from listener.stop(), but got: %v", err)
+	}
+
+	time.Sleep(time.Duration(1) * time.Second)
+
+	if listener.healthy() {
+		t.Errorf("expected a non-healthy LibreOffice listener")
+	}
+
+	listener.restarting = true
+
+	if !listener.healthy() {
+		t.Error("expected an healthy LibreOffice listener")
+	}
+}
--- a/pkg/modules/libreoffice/uno/mocks.go
+++ b/pkg/modules/libreoffice/uno/mocks.go
@@ -0,0 +1,36 @@
+package uno
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+)
+
+// APIMock is a mock for the API interface.
+type APIMock struct {
+	PDFMock        func(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options Options) error
+	ExtensionsMock func() []string
+}
+
+func (api APIMock) PDF(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options Options) error {
+	return api.PDFMock(ctx, logger, inputPath, outputPath, options)
+}
+
+func (api APIMock) Extensions() []string {
+	return api.ExtensionsMock()
+}
+
+// ProviderMock is a mock for the Provider interface.
+type ProviderMock struct {
+	UNOMock func() (API, error)
+}
+
+func (provider ProviderMock) UNO() (API, error) {
+	return provider.UNOMock()
+}
+
+// Interface guards.
+var (
+	_ API      = (*APIMock)(nil)
+	_ Provider = (*ProviderMock)(nil)
+)
--- a/pkg/modules/libreoffice/uno/mocks_test.go
+++ b/pkg/modules/libreoffice/uno/mocks_test.go
@@ -0,0 +1,42 @@
+package uno
+
+import (
+	"context"
+	"testing"
+
+	"go.uber.org/zap"
+)
+
+func TestAPIMock(t *testing.T) {
+	mock := APIMock{
+		PDFMock: func(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options Options) error {
+			return nil
+		},
+		ExtensionsMock: func() []string {
+			return nil
+		},
+	}
+
+	err := mock.PDF(context.Background(), zap.NewNop(), "", "", Options{})
+	if err != nil {
+		t.Errorf("expected no error from mock.PDF(), but got: %v", err)
+	}
+
+	ext := mock.Extensions()
+	if ext != nil {
+		t.Errorf("expected no extensions from mock.Extensions(), but got: %+v", ext)
+	}
+}
+
+func TestProviderMock(t *testing.T) {
+	mock := ProviderMock{
+		UNOMock: func() (API, error) {
+			return APIMock{}, nil
+		},
+	}
+
+	_, err := mock.UNO()
+	if err != nil {
+		t.Errorf("expected no error from mock.UNO(), but got: %v", err)
+	}
+}
--- a/pkg/modules/libreoffice/uno/uno.go
+++ b/pkg/modules/libreoffice/uno/uno.go
@@ -0,0 +1,512 @@
+package uno
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"sync"
+	"time"
+
+	"github.com/alexliesenfeld/health"
+	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
+	"github.com/gotenberg/gotenberg/v7/pkg/modules/api"
+	flag "github.com/spf13/pflag"
+	"go.uber.org/multierr"
+	"go.uber.org/zap"
+)
+
+func init() {
+	gotenberg.MustRegisterModule(UNO{})
+}
+
+var (
+	// ErrInvalidPDFformat happens if the PDF format option cannot be handled
+	// by LibreOffice.
+	ErrInvalidPDFformat = errors.New("invalid PDF format")
+
+	// ErrMalformedPageRanges happens if the page ranges option cannot be
+	// interpreted by LibreOffice.
+	ErrMalformedPageRanges = errors.New("page ranges are malformed")
+)
+
+// UNO is a module which provides an API to interact with LibreOffice.
+type UNO struct {
+	unoconvBinPath              string
+	libreOfficeBinPath          string
+	libreOfficeStartTimeout     time.Duration
+	libreOfficeRestartThreshold int
+
+	listener listener
+	logger   *zap.Logger
+}
+
+// Options gathers available options when converting a document to PDF.
+type Options struct {
+	// Landscape allows to change the orientation of the resulting PDF.
+	// Optional.
+	Landscape bool
+
+	// PageRanges allows to select the pages to convert.
+	// TODO: should prefer a method form PDFEngine.
+	// Optional.
+	PageRanges string
+
+	// PDFformat allows to convert the resulting PDF to PDF/A-1a, PDF/A-2b, or
+	// PDF/A-3b.
+	// Optional.
+	PDFformat string
+}
+
+// API is an abstraction on top of uno.
+type API interface {
+	PDF(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options Options) error
+	Extensions() []string
+}
+
+// Provider is a module interface which exposes a method for creating an API
+// for other modules.
+//
+//	func (m *YourModule) Provision(ctx *gotenberg.Context) error {
+//		provider, _ := ctx.Module(new(uno.Provider))
+//		unoAPI, _      := provider.(uno.Provider).UNO()
+//	}
+type Provider interface {
+	UNO() (API, error)
+}
+
+// Descriptor returns a UNO's module descriptor.
+func (UNO) Descriptor() gotenberg.ModuleDescriptor {
+	return gotenberg.ModuleDescriptor{
+		ID: "uno",
+		FlagSet: func() *flag.FlagSet {
+			fs := flag.NewFlagSet("uno", flag.ExitOnError)
+			fs.Duration("uno-listener-start-timeout", time.Duration(10)*time.Second, "Time limit for restarting the LibreOffice listener")
+			fs.Int("uno-listener-restart-threshold", 10, "Conversions limit after which the LibreOffice listener is restarted - 0 means no long-running LibreOffice listener")
+			fs.Bool("unoconv-disable-listener", false, "Do not start a long-running listener - save resources in detriment of unitary performance")
+
+			err := fs.MarkDeprecated("unoconv-disable-listener", "use uno-listener-restart-threshold with 0 instead")
+			if err != nil {
+				panic(fmt.Errorf("create deprecated flags for the uno module: %v", err))
+			}
+
+			return fs
+		}(),
+		New: func() gotenberg.Module { return new(UNO) },
+	}
+}
+
+// Provision sets the module properties. It returns an error if the environment
+// variables UNOCONV_BIN_PATH and LIBREOFFICE_BIN_PATH are not set.
+func (mod *UNO) Provision(ctx *gotenberg.Context) error {
+	flags := ctx.ParsedFlags()
+	mod.libreOfficeStartTimeout = flags.MustDuration("uno-listener-start-timeout")
+	mod.libreOfficeRestartThreshold = flags.MustInt("uno-listener-restart-threshold")
+
+	disableListener := flags.MustBool("unoconv-disable-listener")
+	if disableListener {
+		mod.libreOfficeRestartThreshold = 0
+	}
+
+	unoconvBinPath, ok := os.LookupEnv("UNOCONV_BIN_PATH")
+	if !ok {
+		return errors.New("UNOCONV_BIN_PATH environment variable is not set")
+	}
+
+	mod.unoconvBinPath = unoconvBinPath
+
+	libreOfficeBinPath, ok := os.LookupEnv("LIBREOFFICE_BIN_PATH")
+	if !ok {
+		return errors.New("LIBREOFFICE_BIN_PATH environment variable is not set")
+	}
+
+	mod.libreOfficeBinPath = libreOfficeBinPath
+
+	loggerProvider, err := ctx.Module(new(gotenberg.LoggerProvider))
+	if err != nil {
+		return fmt.Errorf("get logger provider: %w", err)
+	}
+
+	logger, err := loggerProvider.(gotenberg.LoggerProvider).Logger(mod)
+	if err != nil {
+		return fmt.Errorf("get logger: %w", err)
+	}
+
+	mod.logger = logger
+
+	mod.listener = newLibreOfficeListener(
+		mod.logger,
+		mod.libreOfficeBinPath,
+		mod.libreOfficeStartTimeout,
+		mod.libreOfficeRestartThreshold,
+	)
+
+	return nil
+}
+
+// Validate validates the module properties.
+func (mod UNO) Validate() error {
+	var err error
+
+	_, statErr := os.Stat(mod.unoconvBinPath)
+	if os.IsNotExist(statErr) {
+		err = multierr.Append(err, fmt.Errorf("unoconv binary path does not exist: %w", statErr))
+	}
+
+	_, statErr = os.Stat(mod.libreOfficeBinPath)
+	if os.IsNotExist(statErr) {
+		err = multierr.Append(err, fmt.Errorf("LibreOffice binary path does not exist: %w", statErr))
+	}
+
+	return err
+}
+
+// Start does nothing: it is here to validate the contract from the
+// gotenberg.App interface. The long-running LibreOffice Listener will be
+// started on the first call to PDF.
+func (mod UNO) Start() error {
+	return nil
+}
+
+// StartupMessage returns a custom startup message.
+func (mod UNO) StartupMessage() string {
+	if mod.libreOfficeRestartThreshold == 0 {
+		return "long-running LibreOffice listener disabled"
+	}
+
+	return "long-running LibreOffice listener ready to start"
+}
+
+// Stop stops the long-running LibreOffice Listener if it exists.
+func (mod UNO) Stop(ctx context.Context) error {
+	if mod.libreOfficeRestartThreshold == 0 {
+		return nil
+	}
+
+	// Block until the context is done so that other module may gracefully stop
+	// before we do a shutdown cleanup.
+	mod.logger.Debug("wait for the end of grace duration")
+
+	<-ctx.Done()
+
+	err := mod.listener.stop(mod.logger)
+	if err == nil {
+		return nil
+	}
+
+	return fmt.Errorf("stop long-running LibreOffice listener")
+}
+
+// Metrics returns the metrics.
+func (mod UNO) Metrics() ([]gotenberg.Metric, error) {
+	return []gotenberg.Metric{
+		{
+			Name:        "unoconv_active_instances_count",
+			Description: "Current number of active unoconv instances.",
+			Read: func() float64 {
+				activeInstancesCountMu.RLock()
+				defer activeInstancesCountMu.RUnlock()
+
+				return activeInstancesCount
+			},
+		},
+		{
+			Name:        "libreoffice_listener_active_instances_count",
+			Description: "Current number of active LibreOffice listener instances.",
+			Read: func() float64 {
+				if mod.libreOfficeRestartThreshold == 0 {
+					listenerActiveInstancesCountMu.RLock()
+					defer listenerActiveInstancesCountMu.RUnlock()
+
+					return listenerActiveInstancesCount
+				}
+
+				if mod.listener.healthy() {
+					return 1
+				}
+
+				return 0
+			},
+		},
+		{
+			Name:        "unoconv_listener_active_instances_count",
+			Description: "Current number of active unoconv listener instances - deprecated, prefer libreoffice_listener_active_instances_count.",
+			Read: func() float64 {
+				if mod.libreOfficeRestartThreshold == 0 {
+					listenerActiveInstancesCountMu.RLock()
+					defer listenerActiveInstancesCountMu.RUnlock()
+
+					return listenerActiveInstancesCount
+				}
+
+				if mod.listener.healthy() {
+					return 1
+				}
+
+				return 0
+			},
+		},
+		{
+			Name:        "libreoffice_listener_queue_length",
+			Description: "Current number of processes in the LibreOffice listener queue.",
+			Read: func() float64 {
+				return float64(mod.listener.queue())
+			},
+		},
+		{
+			Name:        "unoconv_listener_queue_length",
+			Description: "Current number of processes in the queue - deprecated, prefer libreoffice_listener_queue_length.",
+			Read: func() float64 {
+				return float64(mod.listener.queue())
+			},
+		},
+	}, nil
+}
+
+// Checks adds a health check that verifies the health of the long-running
+// LibreOffice listener.
+func (mod UNO) Checks() ([]health.CheckerOption, error) {
+	if mod.libreOfficeRestartThreshold == 0 {
+		return nil, nil
+	}
+
+	return []health.CheckerOption{
+		health.WithCheck(health.Check{
+			Name: "uno",
+			Check: func(_ context.Context) error {
+				if mod.listener.healthy() {
+					return nil
+				}
+
+				return errors.New("long-running LibreOffice listener unhealthy")
+			},
+		}),
+	}, nil
+}
+
+// PDF converts a document to PDF.
+//
+// If there is no long-running LibreOffice listener, it creates a dedicated
+// LibreOffice instance for the conversion. Substantial calls to this method
+// may increase CPU and memory usage drastically
+//
+// If there is a long-running LibreOffice listener, the conversion performance
+// improves substantially. However, it cannot perform parallel operations.
+func (mod UNO) PDF(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options Options) error {
+	args := []string{
+		"--no-launch",
+		"--format",
+		"pdf",
+	}
+
+	switch mod.libreOfficeRestartThreshold {
+	case 0:
+		listener := newLibreOfficeListener(logger, mod.libreOfficeBinPath, mod.libreOfficeStartTimeout, 0)
+
+		err := listener.start(logger)
+		if err != nil {
+			return fmt.Errorf("start LibreOffice listener: %w", err)
+		}
+
+		defer func() {
+			err := listener.stop(logger)
+			if err != nil {
+				logger.Error(fmt.Sprintf("stop LibreOffice listener: %v", err))
+			}
+		}()
+
+		args = append(args, "--port", fmt.Sprintf("%d", listener.port()))
+	default:
+		err := mod.listener.lock(ctx, logger)
+		if err != nil {
+			return fmt.Errorf("lock long-running LibreOffice listener: %w", err)
+		}
+
+		defer func() {
+			go func() {
+				err := mod.listener.unlock(logger)
+				if err != nil {
+					mod.logger.Error(fmt.Sprintf("unlock long-running LibreOffice listener: %v", err))
+
+					return
+				}
+			}()
+		}()
+
+		// If the LibreOffice listener is restarting while acquiring the lock,
+		// the port will change. It's therefore important to add the port args
+		// after we acquire the lock.
+		args = append(args, "--port", fmt.Sprintf("%d", mod.listener.port()))
+	}
+
+	checkedEntry := logger.Check(zap.DebugLevel, "check for debug level before setting high verbosity")
+	if checkedEntry != nil {
+		args = append(args, "-vvv")
+	}
+
+	if options.Landscape {
+		args = append(args, "--printer", "PaperOrientation=landscape")
+	}
+
+	if options.PageRanges != "" {
+		args = append(args, "--export", fmt.Sprintf("PageRange=%s", options.PageRanges))
+	}
+
+	switch options.PDFformat {
+	case "":
+	case gotenberg.FormatPDFA1a:
+		args = append(args, "--export", "SelectPdfVersion=1")
+	case gotenberg.FormatPDFA2b:
+		args = append(args, "--export", "SelectPdfVersion=2")
+	case gotenberg.FormatPDFA3b:
+		args = append(args, "--export", "SelectPdfVersion=3")
+	default:
+		return ErrInvalidPDFformat
+	}
+
+	args = append(args, "--output", outputPath, inputPath)
+
+	cmd, err := gotenberg.CommandContext(ctx, logger, mod.unoconvBinPath, args...)
+	if err != nil {
+		return fmt.Errorf("create unoconv command: %w", err)
+	}
+
+	logger.Debug(fmt.Sprintf("print to PDF with: %+v", options))
+
+	activeInstancesCountMu.Lock()
+	activeInstancesCount += 1
+	activeInstancesCountMu.Unlock()
+
+	exitCode, err := cmd.Exec()
+
+	activeInstancesCountMu.Lock()
+	activeInstancesCount -= 1
+	activeInstancesCountMu.Unlock()
+
+	if err == nil {
+		return nil
+	}
+
+	// Unoconv/LibreOffice errors are not explicit.
+	// That's why we have to make an educated guess according to the exit code
+	// and given inputs.
+
+	if exitCode == 5 && options.PageRanges != "" {
+		return ErrMalformedPageRanges
+	}
+
+	// Possible errors:
+	// 1. Unoconv/LibreOffice failed for some reason.
+	// 2. Context done.
+	//
+	// On the second scenario, LibreOffice might not have time to remove some
+	// of its temporary files, as it has been killed without warning. The
+	// garbage collector will delete them for us (if the module is loaded).
+	return fmt.Errorf("unoconv PDF: %w", err)
+}
+
+// Extensions returns the file extensions available for conversions.
+func (mod UNO) Extensions() []string {
+	return []string{
+		".bib",
+		".doc",
+		".xml",
+		".docx",
+		".fodt",
+		".html",
+		".ltx",
+		".txt",
+		".odt",
+		".ott",
+		".pdb",
+		".pdf",
+		".psw",
+		".rtf",
+		".sdw",
+		".stw",
+		".sxw",
+		".uot",
+		".vor",
+		".wps",
+		".epub",
+		".png",
+		".bmp",
+		".emf",
+		".eps",
+		".fodg",
+		".gif",
+		".jpg",
+		".jpeg",
+		".met",
+		".odd",
+		".otg",
+		".pbm",
+		".pct",
+		".pgm",
+		".ppm",
+		".ras",
+		".std",
+		".svg",
+		".svm",
+		".swf",
+		".sxd",
+		".sxw",
+		".tif",
+		".tiff",
+		".xhtml",
+		".xpm",
+		".odp",
+		".fodp",
+		".potm",
+		".pot",
+		".pptx",
+		".pps",
+		".ppt",
+		".pwp",
+		".sda",
+		".sdd",
+		".sti",
+		".sxi",
+		".uop",
+		".wmf",
+		".csv",
+		".dbf",
+		".dif",
+		".fods",
+		".ods",
+		".ots",
+		".pxl",
+		".sdc",
+		".slk",
+		".stc",
+		".sxc",
+		".uos",
+		".xls",
+		".xlt",
+		".xlsx",
+	}
+}
+
+// UNO returns an API for interacting with LibreOffice.
+func (mod UNO) UNO() (API, error) {
+	return mod, nil
+}
+
+var (
+	listenerActiveInstancesCount   float64
+	listenerActiveInstancesCountMu sync.RWMutex
+	activeInstancesCount           float64
+	activeInstancesCountMu         sync.RWMutex
+)
+
+// Interface guards.
+var (
+	_ gotenberg.Module          = (*UNO)(nil)
+	_ gotenberg.Provisioner     = (*UNO)(nil)
+	_ gotenberg.Validator       = (*UNO)(nil)
+	_ gotenberg.App             = (*UNO)(nil)
+	_ gotenberg.MetricsProvider = (*UNO)(nil)
+	_ api.HealthChecker         = (*UNO)(nil)
+	_ API                       = (*UNO)(nil)
+	_ Provider                  = (*UNO)(nil)
+)
--- a/pkg/modules/libreoffice/uno/uno_test.go
+++ b/pkg/modules/libreoffice/uno/uno_test.go
@@ -0,0 +1,817 @@
+package uno
+
+import (
+	"context"
+	"errors"
+	"os"
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/alexliesenfeld/health"
+	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
+	flag "github.com/spf13/pflag"
+	"go.uber.org/zap"
+)
+
+func TestUNO_Descriptor(t *testing.T) {
+	descriptor := UNO{}.Descriptor()
+
+	actual := reflect.TypeOf(descriptor.New())
+	expect := reflect.TypeOf(new(UNO))
+
+	if actual != expect {
+		t.Errorf("expected '%s' but got '%s'", expect, actual)
+	}
+}
+
+func TestUNO_Provision(t *testing.T) {
+	tests := []struct {
+		name               string
+		ctx                *gotenberg.Context
+		expectProvisionErr bool
+	}{
+		{
+			name: "nominal behavior",
+			ctx: func() *gotenberg.Context {
+				provider := struct {
+					gotenberg.ModuleMock
+					gotenberg.LoggerProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
+				}
+				provider.LoggerMock = func(mod gotenberg.Module) (*zap.Logger, error) {
+					return zap.NewNop(), nil
+				}
+
+				return gotenberg.NewContext(
+					gotenberg.ParsedFlags{
+						FlagSet: new(UNO).Descriptor().FlagSet,
+					},
+					[]gotenberg.ModuleDescriptor{
+						provider.Descriptor(),
+					},
+				)
+			}(),
+		},
+		{
+			name: "threshold from deprecated flag --unoconv-disable-listener",
+			ctx: func() *gotenberg.Context {
+				provider := struct {
+					gotenberg.ModuleMock
+					gotenberg.LoggerProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
+				}
+				provider.LoggerMock = func(mod gotenberg.Module) (*zap.Logger, error) {
+					return zap.NewNop(), nil
+				}
+
+				return gotenberg.NewContext(
+					gotenberg.ParsedFlags{
+						FlagSet: func() *flag.FlagSet {
+							fs := new(UNO).Descriptor().FlagSet
+							err := fs.Parse([]string{"--unoconv-disable-listener=true"})
+
+							if err != nil {
+								t.Fatalf("expected no error from fs.Parse(), but got: %v", err)
+							}
+
+							return fs
+						}(),
+					},
+					[]gotenberg.ModuleDescriptor{
+						provider.Descriptor(),
+					},
+				)
+			}(),
+		},
+		{
+			name: "no logger provider",
+			ctx: func() *gotenberg.Context {
+				return gotenberg.NewContext(
+					gotenberg.ParsedFlags{
+						FlagSet: new(UNO).Descriptor().FlagSet,
+					},
+					[]gotenberg.ModuleDescriptor{},
+				)
+			}(),
+			expectProvisionErr: true,
+		},
+		{
+			name: "no logger from logger provider",
+			ctx: func() *gotenberg.Context {
+				provider := struct {
+					gotenberg.ModuleMock
+					gotenberg.LoggerProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
+				}
+				provider.LoggerMock = func(mod gotenberg.Module) (*zap.Logger, error) {
+					return nil, errors.New("foo")
+				}
+
+				return gotenberg.NewContext(
+					gotenberg.ParsedFlags{
+						FlagSet: new(UNO).Descriptor().FlagSet,
+					},
+					[]gotenberg.ModuleDescriptor{
+						provider.Descriptor(),
+					},
+				)
+			}(),
+			expectProvisionErr: true,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			mod := new(UNO)
+			err := mod.Provision(tc.ctx)
+
+			if tc.expectProvisionErr && err == nil {
+				t.Errorf("expected mod.Provision() error, but got none")
+			}
+
+			if !tc.expectProvisionErr && err != nil {
+				t.Errorf("expected no error from mod.Provision(), but got: %v", err)
+			}
+		})
+	}
+}
+
+func TestUNO_Validate(t *testing.T) {
+	tests := []struct {
+		name               string
+		unoconvBinPath     string
+		libreOfficeBinPath string
+		expectValidateErr  bool
+	}{
+		{
+			name:               "nominal behavior",
+			unoconvBinPath:     os.Getenv("UNOCONV_BIN_PATH"),
+			libreOfficeBinPath: os.Getenv("LIBREOFFICE_BIN_PATH"),
+		},
+		{
+			name:               "unoconv bin path does not exist",
+			unoconvBinPath:     "/foo",
+			libreOfficeBinPath: os.Getenv("LIBREOFFICE_BIN_PATH"),
+			expectValidateErr:  true,
+		},
+		{
+			name:               "LibreOffice bin path does not exist",
+			unoconvBinPath:     os.Getenv("UNOCONV_BIN_PATH"),
+			libreOfficeBinPath: "/foo",
+			expectValidateErr:  true,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			mod := UNO{
+				unoconvBinPath:     tc.unoconvBinPath,
+				libreOfficeBinPath: tc.libreOfficeBinPath,
+			}
+
+			err := mod.Validate()
+
+			if tc.expectValidateErr && err == nil {
+				t.Errorf("expected mod.Validate() error, but got none")
+			}
+
+			if !tc.expectValidateErr && err != nil {
+				t.Errorf("expected no error from mod.Validate(), but got: %v", err)
+			}
+		})
+	}
+}
+
+func TestUNO_Start(t *testing.T) {
+
+}
+
+func TestUNO_StartupMessage(t *testing.T) {
+	tests := []struct {
+		name          string
+		mod           UNO
+		expectMessage string
+	}{
+		{
+			name: "long-running LibreOffice listener ready to start",
+			mod: UNO{
+				libreOfficeRestartThreshold: 10,
+			},
+			expectMessage: "long-running LibreOffice listener ready to start",
+		},
+		{
+			name: "long-running LibreOffice listener disabled",
+			mod: UNO{
+				libreOfficeRestartThreshold: 0,
+			},
+			expectMessage: "long-running LibreOffice listener disabled",
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			actual := tc.mod.StartupMessage()
+
+			if tc.expectMessage != actual {
+				t.Errorf("expected '%s' from mod.StartupMessage(), but got '%s'", tc.expectMessage, actual)
+			}
+		})
+	}
+}
+
+func TestUNO_Stop(t *testing.T) {
+	tests := []struct {
+		name          string
+		mod           UNO
+		expectStopErr bool
+	}{
+		{
+			name: "nominal behavior",
+			mod: UNO{
+				libreOfficeRestartThreshold: 10,
+				listener: listenerMock{
+					stopMock: func(logger *zap.Logger) error {
+						return nil
+					},
+				},
+				logger: zap.NewNop(),
+			},
+		},
+		{
+			name: "no long-running LibreOffice listener",
+			mod: UNO{
+				libreOfficeRestartThreshold: 0,
+				logger:                      zap.NewNop(),
+			},
+		},
+		{
+			name: "stop error",
+			mod: UNO{
+				libreOfficeRestartThreshold: 10,
+				listener: listenerMock{
+					stopMock: func(logger *zap.Logger) error {
+						return errors.New("foo")
+					},
+				},
+				logger: zap.NewNop(),
+			},
+			expectStopErr: true,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			ctx, cancel := context.WithTimeout(context.Background(), time.Duration(10)*time.Second)
+			cancel()
+
+			err := tc.mod.Stop(ctx)
+
+			if tc.expectStopErr && err == nil {
+				t.Errorf("expected mod.Stop() error, but got none")
+			}
+
+			if !tc.expectStopErr && err != nil {
+				t.Errorf("expected no error from mod.Stop(), but got: %v", err)
+			}
+		})
+	}
+}
+
+func TestUNO_Metrics(t *testing.T) {
+	tests := []struct {
+		name                                          string
+		mod                                           UNO
+		expectUnoconvActiveInstancesCount             float64
+		expectLibreOfficeListenerActiveInstancesCount float64
+		expectLibreOfficeListenerQueueLength          float64
+	}{
+		{
+			name: "with healthy long-running LibreOffice listener",
+			mod: UNO{
+				libreOfficeRestartThreshold: 10,
+				listener: listenerMock{
+					queueMock: func() int {
+						return 0
+					},
+					healthyMock: func() bool {
+						return true
+					},
+				},
+			},
+			expectLibreOfficeListenerActiveInstancesCount: 1,
+		},
+		{
+			name: "with unhealthy long-running LibreOffice listener",
+			mod: UNO{
+				libreOfficeRestartThreshold: 10,
+				listener: listenerMock{
+					queueMock: func() int {
+						return 0
+					},
+					healthyMock: func() bool {
+						return false
+					},
+				},
+			},
+		},
+		{
+			name: "with no long-running LibreOffice listener",
+			mod: UNO{
+				libreOfficeRestartThreshold: 0,
+				listener: listenerMock{
+					queueMock: func() int {
+						return 0
+					},
+					healthyMock: func() bool {
+						return false
+					},
+				},
+			},
+		},
+		{
+			name: "with a queue of 3",
+			mod: UNO{
+				libreOfficeRestartThreshold: 0,
+				listener: listenerMock{
+					queueMock: func() int {
+						return 3
+					},
+					healthyMock: func() bool {
+						return true
+					},
+				},
+			},
+			expectLibreOfficeListenerQueueLength: 3,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			metrics, err := tc.mod.Metrics()
+			if err != nil {
+				t.Fatalf("expected no error from mod.Metrics(), but got: %v", err)
+			}
+
+			for _, metric := range metrics {
+				switch metric.Name {
+				case "unoconv_active_instances_count":
+					actual := metric.Read()
+					if actual != tc.expectUnoconvActiveInstancesCount {
+						t.Errorf("expected 'unoconv_active_instances_count' to be %.0f, but got %.0f", tc.expectUnoconvActiveInstancesCount, actual)
+					}
+				case "libreoffice_listener_active_instances_count":
+					actual := metric.Read()
+					if actual != tc.expectLibreOfficeListenerActiveInstancesCount {
+						t.Errorf("expected 'libreoffice_listener_active_instances_count' to be %.0f, but got %.0f", tc.expectLibreOfficeListenerActiveInstancesCount, actual)
+					}
+				case "unoconv_listener_active_instances_count":
+					actual := metric.Read()
+					if actual != tc.expectLibreOfficeListenerActiveInstancesCount {
+						t.Errorf("expected 'unoconv_listener_active_instances_count' to be %.0f, but got %.0f", tc.expectLibreOfficeListenerActiveInstancesCount, actual)
+					}
+				case "libreoffice_listener_queue_length":
+					actual := metric.Read()
+					if actual != tc.expectLibreOfficeListenerQueueLength {
+						t.Errorf("expected 'libreoffice_listener_queue_length' to be %.0f, but got %.0f", tc.expectLibreOfficeListenerQueueLength, actual)
+					}
+				case "unoconv_listener_queue_length":
+					actual := metric.Read()
+					if actual != tc.expectLibreOfficeListenerQueueLength {
+						t.Errorf("expected 'unoconv_listener_queue_length' to be %.0f, but got %.0f", tc.expectLibreOfficeListenerQueueLength, actual)
+					}
+				}
+			}
+		})
+	}
+}
+
+func TestUNO_Checks(t *testing.T) {
+	tests := []struct {
+		name                     string
+		mod                      UNO
+		expectAvailabilityStatus health.AvailabilityStatus
+	}{
+		{
+			name: "no long-running LibreOffice listener",
+			mod: UNO{
+				libreOfficeRestartThreshold: 0,
+			},
+		},
+		{
+			name: "with healthy long-running LibreOffice listener",
+			mod: UNO{
+				libreOfficeRestartThreshold: 10,
+				listener: listenerMock{
+					healthyMock: func() bool {
+						return true
+					},
+				},
+			},
+			expectAvailabilityStatus: health.StatusUp,
+		},
+		{
+			name: "with unhealthy long-running LibreOffice listener",
+			mod: UNO{
+				libreOfficeRestartThreshold: 10,
+				listener: listenerMock{
+					healthyMock: func() bool {
+						return false
+					},
+				},
+			},
+			expectAvailabilityStatus: health.StatusDown,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			checks, err := tc.mod.Checks()
+			if err != nil {
+				t.Fatalf("expected no error from mod.Checks(), but got: %v", err)
+			}
+
+			if len(checks) == 0 {
+				return
+			}
+
+			if len(checks) != 1 {
+				t.Fatalf("expected 1 check from mod.Checks(), but got %d", len(checks))
+			}
+
+			checker := health.NewChecker(checks...)
+			result := checker.Check(context.Background())
+
+			if result.Status != tc.expectAvailabilityStatus {
+				t.Errorf("expected '%s' as availability status, but got '%s'", tc.expectAvailabilityStatus, result.Status)
+			}
+		})
+	}
+}
+
+func TestUNO_PDF(t *testing.T) {
+	tests := []struct {
+		name         string
+		mod          UNO
+		ctx          context.Context
+		logger       *zap.Logger
+		inputPath    string
+		options      Options
+		expectPDFErr bool
+		teardown     func(mod UNO) error
+	}{
+		{
+			name: "nominal behavior with no long-running LibreOffice listener",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:       context.Background(),
+			logger:    zap.NewNop(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+		},
+		{
+			name: "nominal behavior with a long-running LibreOffice listener",
+			mod: func() UNO {
+				mod := UNO{
+					unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+					libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+					libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+					libreOfficeRestartThreshold: 10,
+					logger:                      zap.NewNop(),
+				}
+				mod.listener = newLibreOfficeListener(
+					mod.logger,
+					mod.libreOfficeBinPath,
+					mod.libreOfficeStartTimeout,
+					mod.libreOfficeRestartThreshold,
+				)
+
+				return mod
+			}(),
+			ctx:       context.Background(),
+			logger:    zap.NewNop(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+			teardown: func(mod UNO) error {
+				ctx, cancel := context.WithCancel(context.Background())
+				cancel()
+
+				return mod.Stop(ctx)
+			},
+		},
+		{
+			name: "convert with a debug logger",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:       context.Background(),
+			logger:    zap.NewExample(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+		},
+		{
+			name: "convert with landscape",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:       context.Background(),
+			logger:    zap.NewNop(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+			options: Options{
+				Landscape: true,
+			},
+		},
+		{
+			name: "convert with page ranges",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:       context.Background(),
+			logger:    zap.NewNop(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+			options: Options{
+				PageRanges: "1-2",
+			},
+		},
+		{
+			name: "convert with invalid page ranges",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:       context.Background(),
+			logger:    zap.NewNop(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+			options: Options{
+				PageRanges: "foo",
+			},
+			expectPDFErr: true,
+		},
+		{
+			name: "convert to PDF/A-1a",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:       context.Background(),
+			logger:    zap.NewNop(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+			options: Options{
+				PDFformat: gotenberg.FormatPDFA1a,
+			},
+		},
+		{
+			name: "convert to PDF/A-2b",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:       context.Background(),
+			logger:    zap.NewNop(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+			options: Options{
+				PDFformat: gotenberg.FormatPDFA2b,
+			},
+		},
+		{
+			name: "convert to PDF/A-3b",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:       context.Background(),
+			logger:    zap.NewNop(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+			options: Options{
+				PDFformat: gotenberg.FormatPDFA3b,
+			},
+		},
+		{
+			name: "convert to invalid PDF format",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:       context.Background(),
+			logger:    zap.NewNop(),
+			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
+			options: Options{
+				PDFformat: "foo",
+			},
+			expectPDFErr: true,
+		},
+		{
+			name: "nil context",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx:          nil,
+			logger:       zap.NewNop(),
+			inputPath:    "/tests/test/testdata/libreoffice/sample1.docx",
+			expectPDFErr: true,
+		},
+		{
+			name: "expired context",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 0,
+			},
+			ctx: func() context.Context {
+				ctx, cancel := context.WithCancel(context.Background())
+				cancel()
+
+				return ctx
+			}(),
+			logger:       zap.NewNop(),
+			inputPath:    "/tests/test/testdata/libreoffice/sample1.docx",
+			expectPDFErr: true,
+		},
+		{
+			name: "cannot lock long-running LibreOffice listener",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 10,
+				listener: listenerMock{
+					lockMock: func(ctx context.Context, logger *zap.Logger) error {
+						return errors.New("foo")
+					},
+				},
+				logger: zap.NewNop(),
+			},
+			ctx:          context.Background(),
+			logger:       zap.NewNop(),
+			inputPath:    "/tests/test/testdata/libreoffice/sample1.docx",
+			expectPDFErr: true,
+		},
+		{
+			name: "cannot unlock long-running LibreOffice listener",
+			mod: UNO{
+				unoconvBinPath:              os.Getenv("UNOCONV_BIN_PATH"),
+				libreOfficeBinPath:          os.Getenv("LIBREOFFICE_BIN_PATH"),
+				libreOfficeStartTimeout:     time.Duration(10) * time.Second,
+				libreOfficeRestartThreshold: 10,
+				listener: listenerMock{
+					lockMock: func(ctx context.Context, logger *zap.Logger) error {
+						return nil
+					},
+					unlockMock: func(logger *zap.Logger) error {
+						return errors.New("foo")
+					},
+					portMock: func() int {
+						return 2002
+					},
+				},
+				logger: zap.NewNop(),
+			},
+			ctx:          context.Background(),
+			logger:       zap.NewNop(),
+			inputPath:    "/tests/test/testdata/libreoffice/sample1.docx",
+			expectPDFErr: true,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			defer func() {
+				if tc.teardown == nil {
+					return
+				}
+
+				err := tc.teardown(tc.mod)
+				if err != nil {
+					t.Errorf("expected no error from tc.teardown(), but got: %v", err)
+				}
+			}()
+
+			outputDir, err := gotenberg.MkdirAll()
+			if err != nil {
+				t.Fatalf("expected no error from gotenberg.MkdirAll(), but got: %v", err)
+			}
+
+			defer func() {
+				err := os.RemoveAll(outputDir)
+				if err != nil {
+					t.Errorf("expected no error from os.RemoveAll(), but got: %v", err)
+				}
+			}()
+
+			err = tc.mod.PDF(tc.ctx, tc.logger, tc.inputPath, outputDir+"/foo.pdf", tc.options)
+
+			if tc.expectPDFErr && err == nil {
+				t.Fatalf("expected mod.PDF() error, but got none")
+			}
+
+			if !tc.expectPDFErr && err != nil {
+				t.Fatalf("expected no error from mod.PDF(), but got: %v", err)
+			}
+		})
+	}
+}
+
+func TestUNO_Extensions(t *testing.T) {
+	mod := new(UNO)
+	extensions := mod.Extensions()
+
+	actual := len(extensions)
+	expect := 76
+
+	if actual != expect {
+		t.Errorf("expected %d extensions, but got %d", expect, actual)
+	}
+}
+
+func TestUNO_UNO(t *testing.T) {
+	mod := new(UNO)
+
+	_, err := mod.UNO()
+	if err != nil {
+		t.Errorf("expected no error from mod.UNO(), but got: %v", err)
+	}
+}
+
+type listenerMock struct {
+	startMock   func(logger *zap.Logger) error
+	stopMock    func(logger *zap.Logger) error
+	restartMock func(logger *zap.Logger) error
+	lockMock    func(ctx context.Context, logger *zap.Logger) error
+	unlockMock  func(logger *zap.Logger) error
+	portMock    func() int
+	queueMock   func() int
+	healthyMock func() bool
+}
+
+func (listener listenerMock) start(logger *zap.Logger) error {
+	return listener.startMock(logger)
+}
+
+func (listener listenerMock) stop(logger *zap.Logger) error {
+	return listener.stopMock(logger)
+}
+
+func (listener listenerMock) restart(logger *zap.Logger) error {
+	return listener.restartMock(logger)
+}
+
+func (listener listenerMock) lock(ctx context.Context, logger *zap.Logger) error {
+	return listener.lockMock(ctx, logger)
+}
+
+func (listener listenerMock) unlock(logger *zap.Logger) error {
+	return listener.unlockMock(logger)
+}
+
+func (listener listenerMock) port() int {
+	return listener.portMock()
+}
+
+func (listener listenerMock) queue() int {
+	return listener.queueMock()
+}
+
+func (listener listenerMock) healthy() bool {
+	return listener.healthyMock()
+}
+
+// Interface guards.
+var (
+	_ listener = (*listenerMock)(nil)
+)
--- a/pkg/modules/libreoffice/unoconv/doc.go
+++ b/pkg/modules/libreoffice/unoconv/doc.go
@@ -1,2 +0,0 @@
-// Package unoconv provides a module which abstracts the CLI tool unoconv.
-package unoconv
--- a/pkg/modules/libreoffice/unoconv/unoconv.go
+++ b/pkg/modules/libreoffice/unoconv/unoconv.go
@@ -1,482 +0,0 @@
-package unoconv
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"os"
-	"strings"
-	"sync"
-
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	flag "github.com/spf13/pflag"
-	"go.uber.org/zap"
-)
-
-func init() {
-	gotenberg.MustRegisterModule(Unoconv{})
-}
-
-// ErrMalformedPageRanges happens if the page ranges option cannot be
-// interpreted by LibreOffice.
-var ErrMalformedPageRanges = errors.New("page ranges are malformed")
-
-// Unoconv is a module which provides an API to interact with unoconv.
-type Unoconv struct {
-	binPath         string
-	disableListener bool
-
-	listenerCmd  gotenberg.Cmd
-	listenerPort int
-	logger       *zap.Logger
-}
-
-// Options gathers available options when converting a document to PDF.
-type Options struct {
-	// Landscape allows to change the orientation of the resulting PDF.
-	// Optional.
-	Landscape bool
-
-	// PageRanges allows to select the pages to convert.
-	// TODO: should prefer a method form PDFEngine.
-	// Optional.
-	PageRanges string
-
-	// PDFArchive allows to convert the resulting PDF to PDF/A-1a.
-	// In a module, prefer the Convert method from the gotenberg.PDFEngine
-	// interface.
-	// Optional.
-	PDFArchive bool
-}
-
-// API is an abstraction on top of unoconv.
-//
-// See https://github.com/unoconv/unoconv.
-type API interface {
-	PDF(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options Options) error
-	Extensions() []string
-}
-
-// Provider is a module interface which exposes a method for creating an API
-// for other modules.
-//
-//	func (m *YourModule) Provision(ctx *gotenberg.Context) error {
-//		provider, _ := ctx.Module(new(unoconv.Provider))
-//		uno, _      := provider.(unoconv.Provider).Unoconv()
-//	}
-type Provider interface {
-	Unoconv() (API, error)
-}
-
-// Descriptor returns a Unoconv's module descriptor.
-func (Unoconv) Descriptor() gotenberg.ModuleDescriptor {
-	return gotenberg.ModuleDescriptor{
-		ID: "unoconv",
-		FlagSet: func() *flag.FlagSet {
-			fs := flag.NewFlagSet("unoconv", flag.ExitOnError)
-			fs.Bool("unoconv-disable-listener", false, "Do not start a unoconv listener - save resources in detriment of performance")
-
-			return fs
-		}(),
-		New: func() gotenberg.Module { return new(Unoconv) },
-	}
-}
-
-// Provision sets the module properties. It returns an error if the environment
-// variable UNOCONV_BIN_PATH is not set.
-func (mod *Unoconv) Provision(ctx *gotenberg.Context) error {
-	flags := ctx.ParsedFlags()
-	mod.disableListener = flags.MustBool("unoconv-disable-listener")
-
-	binPath, ok := os.LookupEnv("UNOCONV_BIN_PATH")
-	if !ok {
-		return errors.New("UNOCONV_BIN_PATH environment variable is not set")
-	}
-
-	mod.binPath = binPath
-
-	loggerProvider, err := ctx.Module(new(gotenberg.LoggerProvider))
-	if err != nil {
-		return fmt.Errorf("get logger provider: %w", err)
-	}
-
-	logger, err := loggerProvider.(gotenberg.LoggerProvider).Logger(mod)
-	if err != nil {
-		return fmt.Errorf("get logger: %w", err)
-	}
-
-	mod.logger = logger
-
-	return nil
-}
-
-// Validate validates the module properties.
-func (mod Unoconv) Validate() error {
-	_, err := os.Stat(mod.binPath)
-	if os.IsNotExist(err) {
-		return fmt.Errorf("unoconv binary path does not exist: %w", err)
-	}
-
-	return nil
-}
-
-func (mod *Unoconv) Start() error {
-	if mod.disableListener {
-		return nil
-	}
-
-	port, err := freePort(mod.logger)
-	if err != nil {
-		return fmt.Errorf("get free port: %w", err)
-	}
-
-	mod.listenerPort = port
-
-	args := []string{
-		"--listener",
-		"--user-profile",
-		// Just to make sure LibreOffice does not leak files in an unknown
-		// directory. The directory will be removed anyway by the garbage
-		// collector.
-		fmt.Sprintf("//%s", gotenberg.NewDirPath()),
-		"--port",
-		fmt.Sprintf("%d", mod.listenerPort),
-	}
-
-	checkedEntry := mod.logger.Check(zap.DebugLevel, "check for debug level before setting high verbosity")
-	if checkedEntry != nil {
-		args = append(args, "-vvv")
-	}
-
-	mod.listenerCmd = gotenberg.Command(mod.logger, mod.binPath, args...)
-
-	err = mod.listenerCmd.Start()
-	if err != nil {
-		return fmt.Errorf("start unoconv listener: %w", err)
-	}
-
-	listenerActiveInstancesCountMu.Lock()
-	listenerActiveInstancesCount += 1
-	listenerActiveInstancesCountMu.Unlock()
-
-	return nil
-}
-
-// StartupMessage returns a custom startup message.
-func (mod Unoconv) StartupMessage() string {
-	if mod.disableListener {
-		return "listener disabled"
-	}
-
-	return fmt.Sprintf("listener started on port %d", mod.listenerPort)
-}
-
-// Stop stops the HTTP server.
-func (mod *Unoconv) Stop(ctx context.Context) error {
-	if mod.disableListener {
-		return nil
-	}
-
-	_, ok := ctx.Deadline()
-	if !ok {
-		return errors.New("no context dead line")
-	}
-
-	// Block until the context is done so that other module may gracefully stop
-	// before we do a shutdown cleanup.
-	mod.logger.Debug("wait for the end of grace duration")
-
-	<-ctx.Done()
-
-	err := mod.listenerCmd.Kill()
-	if err != nil {
-		return fmt.Errorf("kill unoconv listener: %w", err)
-	}
-
-	listenerActiveInstancesCountMu.Lock()
-	listenerActiveInstancesCount -= 1
-	listenerActiveInstancesCountMu.Unlock()
-
-	return nil
-}
-
-// Metrics returns the metrics.
-func (mod Unoconv) Metrics() ([]gotenberg.Metric, error) {
-	return []gotenberg.Metric{
-		{
-			Name:        "unoconv_active_instances_count",
-			Description: "Current number of active unoconv instances.",
-			Read: func() float64 {
-				activeInstancesCountMu.RLock()
-				defer activeInstancesCountMu.RUnlock()
-
-				return activeInstancesCount
-			},
-		},
-		{
-			Name:        "unoconv_listener_active_instances_count",
-			Description: "Current number of active unoconv listener instances.",
-			Read: func() float64 {
-				listenerActiveInstancesCountMu.RLock()
-				defer listenerActiveInstancesCountMu.RUnlock()
-
-				return listenerActiveInstancesCount
-			},
-		},
-		{
-			Name:        "unoconv_listener_queue_length",
-			Description: "Current number of processes in the queue.",
-			Read: func() float64 {
-				listenerQueueLengthMu.RLock()
-				defer listenerQueueLengthMu.RUnlock()
-
-				return listenerQueueLength
-			},
-		},
-	}, nil
-}
-
-// Unoconv returns an API for interacting with unoconv.
-func (mod *Unoconv) Unoconv() (API, error) {
-	return mod, nil
-}
-
-// PDF converts a document to PDF.
-//
-// In stateless mode, it creates a dedicated LibreOffice instance thanks to a
-// custom user profile directory and a free port. Substantial calls to this
-// method may increase CPU and memory usage drastically. In such a scenario,
-// the given context may also be done before the end of the conversion.
-//
-// In listener mode, it calls the unoconv listener to interact with
-// LibreOffice, improving substantially the performance. However, it cannot
-// perform parallel operations and have to wait for the lock to be available.
-func (mod Unoconv) PDF(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options Options) error {
-	args := []string{
-		"--format",
-		"pdf",
-	}
-
-	var userProfileDirPath string
-
-	if mod.disableListener {
-		port, err := freePort(logger)
-		if err != nil {
-			return fmt.Errorf("get free port: %w", err)
-		}
-
-		userProfileDirPath = gotenberg.NewDirPath()
-
-		args = append(args,
-			"--port",
-			fmt.Sprintf("%d", port),
-			"--user-profile",
-			fmt.Sprintf("//%s", userProfileDirPath),
-		)
-	} else {
-		args = append(args, "--port", fmt.Sprintf("%d", mod.listenerPort))
-	}
-
-	checkedEntry := logger.Check(zap.DebugLevel, "check for debug level before setting high verbosity")
-	if checkedEntry != nil {
-		args = append(args, "-vvv")
-	}
-
-	if options.Landscape {
-		args = append(args, "--printer", "PaperOrientation=landscape")
-	}
-
-	if options.PageRanges != "" {
-		args = append(args, "--export", fmt.Sprintf("PageRange=%s", options.PageRanges))
-	}
-
-	if options.PDFArchive {
-		args = append(args, "--export", "SelectPdfVersion=1")
-	}
-
-	args = append(args, "--output", outputPath, inputPath)
-
-	if !mod.disableListener {
-		listenerQueueLengthMu.Lock()
-		listenerQueueLength += 1
-		listenerQueueLengthMu.Unlock()
-
-		select {
-		case listenerLock <- struct{}{}:
-			logger.Debug("unoconv lock acquired")
-
-			listenerQueueLengthMu.Lock()
-			listenerQueueLength -= 1
-			listenerQueueLengthMu.Unlock()
-
-			break
-		case <-ctx.Done():
-			logger.Debug("failed to acquire the unoconv lock before deadline")
-
-			listenerQueueLengthMu.Lock()
-			listenerQueueLength -= 1
-			listenerQueueLengthMu.Unlock()
-
-			return fmt.Errorf("acquire unoconv lock: %w", ctx.Err())
-		}
-
-		defer func() {
-			<-listenerLock
-			logger.Debug("unoconv lock released")
-		}()
-	}
-
-	cmd, err := gotenberg.CommandContext(ctx, logger, mod.binPath, args...)
-	if err != nil {
-		return fmt.Errorf("create unoconv command: %w", err)
-	}
-
-	logger.Debug(fmt.Sprintf("print to PDF with: %+v", options))
-
-	activeInstancesCountMu.Lock()
-	activeInstancesCount += 1
-	activeInstancesCountMu.Unlock()
-
-	err = cmd.Exec()
-
-	activeInstancesCountMu.Lock()
-	activeInstancesCount -= 1
-	activeInstancesCountMu.Unlock()
-
-	if mod.disableListener {
-		// Always remove the user profile directory created by LibreOffice.
-		// See https://github.com/gotenberg/gotenberg/issues/192.
-		go func() {
-			logger.Debug(fmt.Sprintf("remove user profile directory '%s'", userProfileDirPath))
-
-			err := os.RemoveAll(userProfileDirPath)
-			if err != nil {
-				logger.Error(fmt.Sprintf("remove user profile directory: %s", err))
-			}
-		}()
-	}
-
-	if err == nil {
-		return nil
-	}
-
-	// Unoconv/LibreOffice errors are not explicit.
-	// That's why we have to make an educated guess according to the exit code
-	// and given inputs.
-
-	if strings.Contains(err.Error(), "exit status 5") && options.PageRanges != "" {
-		return ErrMalformedPageRanges
-	}
-
-	// Possible errors:
-	// 1. Unoconv/LibreOffice failed for some reason.
-	// 2. Context done.
-	//
-	// On the second scenario, LibreOffice might not had time to remove some of
-	// its temporary files, as it has been killed without warning. The garbage
-	// collector will delete them for us (if the module is loaded).
-	return fmt.Errorf("unoconv PDF: %w", err)
-}
-
-// Extensions returns the file extensions available with unoconv.
-func (mod Unoconv) Extensions() []string {
-	return []string{
-		".bib",
-		".doc",
-		".xml",
-		".docx",
-		".fodt",
-		".html",
-		".ltx",
-		".txt",
-		".odt",
-		".ott",
-		".pdb",
-		".pdf",
-		".psw",
-		".rtf",
-		".sdw",
-		".stw",
-		".sxw",
-		".uot",
-		".vor",
-		".wps",
-		".epub",
-		".png",
-		".bmp",
-		".emf",
-		".eps",
-		".fodg",
-		".gif",
-		".jpg",
-		".jpeg",
-		".met",
-		".odd",
-		".otg",
-		".pbm",
-		".pct",
-		".pgm",
-		".ppm",
-		".ras",
-		".std",
-		".svg",
-		".svm",
-		".swf",
-		".sxd",
-		".sxw",
-		".tif",
-		".tiff",
-		".xhtml",
-		".xpm",
-		".odp",
-		".fodp",
-		".potm",
-		".pot",
-		".pptx",
-		".pps",
-		".ppt",
-		".pwp",
-		".sda",
-		".sdd",
-		".sti",
-		".sxi",
-		".uop",
-		".wmf",
-		".csv",
-		".dbf",
-		".dif",
-		".fods",
-		".ods",
-		".ots",
-		".pxl",
-		".sdc",
-		".slk",
-		".stc",
-		".sxc",
-		".uos",
-		".xls",
-		".xlt",
-		".xlsx",
-	}
-}
-
-var (
-	listenerLock                   = make(chan struct{}, 1)
-	listenerQueueLength            float64
-	listenerQueueLengthMu          sync.RWMutex
-	listenerActiveInstancesCount   float64
-	listenerActiveInstancesCountMu sync.RWMutex
-	activeInstancesCount           float64
-	activeInstancesCountMu         sync.RWMutex
-)
-
-// Interface guards.
-var (
-	_ gotenberg.Module          = (*Unoconv)(nil)
-	_ gotenberg.Provisioner     = (*Unoconv)(nil)
-	_ gotenberg.Validator       = (*Unoconv)(nil)
-	_ gotenberg.App             = (*Unoconv)(nil)
-	_ gotenberg.MetricsProvider = (*Unoconv)(nil)
-	_ API                       = (*Unoconv)(nil)
-	_ Provider                  = (*Unoconv)(nil)
-)
--- a/pkg/modules/libreoffice/unoconv/unoconv_test.go
+++ b/pkg/modules/libreoffice/unoconv/unoconv_test.go
@@ -1,453 +0,0 @@
-package unoconv
-
-import (
-	"context"
-	"errors"
-	"os"
-	"reflect"
-	"testing"
-	"time"
-
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"go.uber.org/zap"
-)
-
-type ProtoModule struct {
-	descriptor func() gotenberg.ModuleDescriptor
-}
-
-func (mod ProtoModule) Descriptor() gotenberg.ModuleDescriptor {
-	return mod.descriptor()
-}
-
-type ProtoValidator struct {
-	ProtoModule
-	validate func() error
-}
-
-func (mod ProtoValidator) Validate() error {
-	return mod.validate()
-}
-
-type ProtoLoggerProvider struct {
-	ProtoModule
-	logger func(mod gotenberg.Module) (*zap.Logger, error)
-}
-
-func (factory ProtoLoggerProvider) Logger(mod gotenberg.Module) (*zap.Logger, error) {
-	return factory.logger(mod)
-}
-
-func TestUnoconv_Descriptor(t *testing.T) {
-	descriptor := Unoconv{}.Descriptor()
-
-	actual := reflect.TypeOf(descriptor.New())
-	expect := reflect.TypeOf(new(Unoconv))
-
-	if actual != expect {
-		t.Errorf("expected '%'s' but got '%s'", expect, actual)
-	}
-}
-
-func TestUnoconv_Provision(t *testing.T) {
-	for i, tc := range []struct {
-		ctx       *gotenberg.Context
-		expectErr bool
-	}{
-		{
-			ctx: gotenberg.NewContext(
-				gotenberg.ParsedFlags{FlagSet: new(Unoconv).Descriptor().FlagSet},
-				make([]gotenberg.ModuleDescriptor, 0),
-			),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct {
-					ProtoLoggerProvider
-				}{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.logger = func(mod gotenberg.Module) (*zap.Logger, error) { return nil, errors.New("foo") }
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(Unoconv).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct {
-					ProtoLoggerProvider
-				}{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.logger = func(mod gotenberg.Module) (*zap.Logger, error) { return zap.NewNop(), nil }
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(Unoconv).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-		},
-	} {
-		mod := new(Unoconv)
-		err := mod.Provision(tc.ctx)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-	}
-}
-
-func TestUnoconv_Validate(t *testing.T) {
-	for i, tc := range []struct {
-		binPath   string
-		expectErr bool
-	}{
-		{
-			expectErr: true,
-		},
-		{
-			binPath:   "/foo",
-			expectErr: true,
-		},
-		{
-			binPath: os.Getenv("UNOCONV_BIN_PATH"),
-		},
-	} {
-		mod := Unoconv{
-			binPath: tc.binPath,
-		}
-
-		err := mod.Validate()
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-	}
-}
-
-func TestUnoconv_Start(t *testing.T) {
-	for i, tc := range []struct {
-		mod       *Unoconv
-		expectErr bool
-	}{
-		{
-			mod: &Unoconv{
-				disableListener: true,
-				logger:          zap.NewNop(),
-			},
-		},
-		{
-			mod: &Unoconv{
-				binPath:         os.Getenv("UNOCONV_BIN_PATH"),
-				disableListener: false,
-				logger:          zap.NewExample(),
-			},
-		},
-	} {
-		func() {
-			err := tc.mod.Start()
-
-			if tc.expectErr && err == nil {
-				t.Errorf("test %d: expected error but got: %v", i, err)
-			}
-
-			if !tc.expectErr && err != nil {
-				t.Errorf("test %d: expected no error but got: %v", i, err)
-			}
-
-			ctx, cancel := context.WithTimeout(context.Background(), time.Duration(1)*time.Nanosecond)
-			defer cancel()
-
-			err = tc.mod.Stop(ctx)
-			if err != nil {
-				t.Errorf("test %d: expected not error but got: %v", i, err)
-			}
-		}()
-	}
-}
-
-func TestUnoconv_StartupMessage(t *testing.T) {
-	for i, tc := range []struct {
-		disableListener bool
-		expectMessage   string
-	}{
-		{
-			disableListener: true,
-			expectMessage:   "listener disabled",
-		},
-		{
-			expectMessage: "listener started on port 0",
-		},
-	} {
-		mod := Unoconv{
-			disableListener: tc.disableListener,
-		}
-
-		actual := mod.StartupMessage()
-		if actual != tc.expectMessage {
-			t.Errorf("test %d: expected '%s' but got '%s'", i, tc.expectMessage, actual)
-		}
-	}
-}
-
-func TestUnoconv_Stop(t *testing.T) {
-	for i, tc := range []struct {
-		start           bool
-		disableListener bool
-		timeout         time.Duration
-		expectErr       bool
-	}{
-		{
-			disableListener: true,
-		},
-		{
-			expectErr: true,
-		},
-		{
-			start:   true,
-			timeout: time.Duration(1) * time.Nanosecond,
-		},
-	} {
-		func() {
-			mod := &Unoconv{
-				binPath:         os.Getenv("UNOCONV_BIN_PATH"),
-				disableListener: tc.disableListener,
-				logger:          zap.NewNop(),
-			}
-
-			if tc.start {
-				err := mod.Start()
-				if err != nil {
-					t.Fatalf("test %d: expected no error but got: %v", i, err)
-				}
-			}
-
-			var err error
-
-			if tc.timeout == 0 {
-				err = mod.Stop(context.TODO())
-			} else {
-				ctx, cancel := context.WithTimeout(context.Background(), tc.timeout)
-				defer cancel()
-
-				err = mod.Stop(ctx)
-			}
-
-			if tc.expectErr && err == nil {
-				t.Errorf("test %d: expected error but got: %v", i, err)
-			}
-
-			if !tc.expectErr && err != nil {
-				t.Errorf("test %d: expected no error but got: %v", i, err)
-			}
-		}()
-	}
-}
-
-func TestUnoconv_Metrics(t *testing.T) {
-	metrics, err := new(Unoconv).Metrics()
-	if err != nil {
-		t.Fatalf("expected no error but got: %v", err)
-	}
-
-	if len(metrics) != 3 {
-		t.Fatalf("expected %d metrics, but got %d", 1, len(metrics))
-	}
-
-	actual := metrics[0].Read()
-	if actual != 0 {
-		t.Errorf("expected %d unoconv instances, but got %f", 0, actual)
-	}
-
-	actual = metrics[1].Read()
-	if actual != 0 {
-		t.Errorf("expected %d unoconv listener instances, but got %f", 0, actual)
-	}
-
-	actual = metrics[2].Read()
-	if actual != 0 {
-		t.Errorf("expected %d processes in the queue, but got %f", 0, actual)
-	}
-}
-
-func TestUnoconv_Unoconv(t *testing.T) {
-	mod := new(Unoconv)
-
-	_, err := mod.Unoconv()
-	if err != nil {
-		t.Errorf("expected no error but got: %v", err)
-	}
-}
-
-func TestUnoconv_PDF(t *testing.T) {
-	for i, tc := range []struct {
-		ctx       context.Context
-		mod       Unoconv
-		logger    *zap.Logger
-		inputPath string
-		options   Options
-		expectErr bool
-	}{
-		{
-			mod: Unoconv{
-				binPath:         os.Getenv("UNOCONV_BIN_PATH"),
-				disableListener: true,
-			},
-			logger:    zap.NewNop(),
-			expectErr: true,
-		},
-		{
-			ctx: context.Background(),
-			mod: Unoconv{
-				binPath:         os.Getenv("UNOCONV_BIN_PATH"),
-				disableListener: true,
-			},
-			logger:    zap.NewExample(),
-			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
-			options: Options{
-				Landscape:  true,
-				PageRanges: "1-2",
-				PDFArchive: true,
-			},
-		},
-		{
-			ctx: context.Background(),
-			mod: Unoconv{
-				binPath:         os.Getenv("UNOCONV_BIN_PATH"),
-				disableListener: true,
-			},
-			logger:    zap.NewNop(),
-			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
-			options: Options{
-				PageRanges: "foo",
-			},
-			expectErr: true,
-		},
-		{
-			ctx: func() context.Context {
-				ctx, cancel := context.WithCancel(context.TODO())
-				defer cancel()
-
-				return ctx
-			}(),
-			mod: Unoconv{
-				binPath:         os.Getenv("UNOCONV_BIN_PATH"),
-				disableListener: true,
-			},
-			logger:    zap.NewNop(),
-			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
-			expectErr: true,
-		},
-		{
-			ctx: context.Background(),
-			mod: Unoconv{
-				binPath: os.Getenv("UNOCONV_BIN_PATH"),
-				logger:  zap.NewNop(),
-			},
-			logger:    zap.NewNop(),
-			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
-		},
-		{
-			ctx: func() context.Context {
-				ctx, cancel := context.WithCancel(context.TODO())
-				defer cancel()
-
-				return ctx
-			}(),
-			mod: Unoconv{
-				binPath: os.Getenv("UNOCONV_BIN_PATH"),
-				logger:  zap.NewNop(),
-			},
-			logger:    zap.NewNop(),
-			inputPath: "/tests/test/testdata/libreoffice/sample1.docx",
-			expectErr: true,
-		},
-	} {
-		func() {
-			outputDir, err := gotenberg.MkdirAll()
-			if err != nil {
-				t.Fatalf("test %d: expected error but got: %v", i, err)
-			}
-
-			defer func() {
-				err := os.RemoveAll(outputDir)
-				if err != nil {
-					t.Fatalf("test %d: expected no error but got: %v", i, err)
-				}
-			}()
-
-			if !tc.mod.disableListener {
-				err = tc.mod.Start()
-				if err != nil {
-					t.Fatalf("test %d: expected no error but got: %v", i, err)
-				}
-
-				// Let's give it some room to start.
-				time.Sleep(time.Duration(1) * time.Second)
-			}
-
-			err = tc.mod.PDF(tc.ctx, tc.logger, tc.inputPath, outputDir+"/foo.pdf", tc.options)
-
-			if tc.expectErr && err == nil {
-				t.Errorf("test %d: expected error but got: %v", i, err)
-			}
-
-			if !tc.expectErr && err != nil {
-				t.Errorf("test %d: expected no error but got: %v", i, err)
-			}
-
-			if !tc.mod.disableListener {
-				ctx, cancel := context.WithTimeout(context.Background(), time.Duration(1)*time.Nanosecond)
-				defer cancel()
-
-				err = tc.mod.Stop(ctx)
-				if err != nil {
-					t.Fatalf("test %d: expected no error but got: %v", i, err)
-				}
-			}
-		}()
-	}
-}
-
-func TestUnoconv_Extensions(t *testing.T) {
-	mod := new(Unoconv)
-	extensions := mod.Extensions()
-
-	actual := len(extensions)
-	expect := 76
-
-	if actual != expect {
-		t.Errorf("expected %d extensions but got %d", expect, actual)
-	}
-}
-
-// Interface guards.
-var (
-	_ gotenberg.Module         = (*ProtoModule)(nil)
-	_ gotenberg.Validator      = (*ProtoValidator)(nil)
-	_ gotenberg.LoggerProvider = (*ProtoLoggerProvider)(nil)
-	_ gotenberg.Module         = (*ProtoLoggerProvider)(nil)
-)
--- a/pkg/modules/pdfengines/multi_test.go
+++ b/pkg/modules/pdfengines/multi_test.go
@@ -3,213 +3,178 @@ package pdfengines
 import (
 	"context"
 	"errors"
-	"reflect"
 	"testing"

 	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
 	"go.uber.org/zap"
 )

-func TestNewMultiPDFEngines(t *testing.T) {
-	engine1 := &ProtoPDFEngine{
-		merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-			return nil
-		},
-		convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-			return nil
-		},
-	}
-
-	engine2 := &ProtoPDFEngine{
-		merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-			return errors.New("foo")
-		},
-		convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-			return errors.New("foo")
-		},
-	}
-
-	multi := newMultiPDFEngines(engine1, engine2)
-
-	if len(multi.engines) != 2 {
-		t.Fatalf("expected %d engines but got %d", 2, len(multi.engines))
-	}
-
-	if !reflect.DeepEqual(engine1, multi.engines[0]) {
-		t.Errorf("expected %v, but got: %v", engine1, multi.engines[0])
-	}
-
-	if !reflect.DeepEqual(engine2, multi.engines[1]) {
-		t.Errorf("expected %v, but got: %v", engine2, multi.engines[1])
-	}
-}
-
 func TestMultiPDFEngines_Merge(t *testing.T) {
-	for i, tc := range []struct {
-		ctx       context.Context
-		engines   []gotenberg.PDFEngine
-		expectErr bool
+	tests := []struct {
+		name           string
+		engine         *multiPDFEngines
+		ctx            context.Context
+		expectMergeErr bool
 	}{
 		{
-			ctx: context.TODO(),
-			engines: func() []gotenberg.PDFEngine {
-				return []gotenberg.PDFEngine{
-					ProtoPDFEngine{
-						merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-							return nil
-						},
+			name: "nominal behavior",
+			engine: newMultiPDFEngines(
+				gotenberg.PDFEngineMock{
+					MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+						return nil
 					},
-				}
-			}(),
+				},
+			),
+			ctx: context.Background(),
 		},
 		{
-			ctx: context.TODO(),
-			engines: func() []gotenberg.PDFEngine {
-				return []gotenberg.PDFEngine{
-					ProtoPDFEngine{
-						merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-							return errors.New("foo")
-						},
+			name: "at least one engine does not return an error",
+			engine: newMultiPDFEngines(
+				gotenberg.PDFEngineMock{
+					MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+						return errors.New("foo")
 					},
-					ProtoPDFEngine{
-						merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-							return nil
-						},
+				},
+				gotenberg.PDFEngineMock{
+					MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+						return nil
 					},
-				}
-			}(),
+				},
+			),
+			ctx: context.Background(),
 		},
 		{
-			ctx: context.TODO(),
-			engines: func() []gotenberg.PDFEngine {
-				return []gotenberg.PDFEngine{
-					ProtoPDFEngine{
-						merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-							return errors.New("foo")
-						},
+			name: "all engines return an error",
+			engine: newMultiPDFEngines(
+				gotenberg.PDFEngineMock{
+					MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+						return errors.New("foo")
 					},
-					ProtoPDFEngine{
-						merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-							return errors.New("bar")
-						},
+				},
+				gotenberg.PDFEngineMock{
+					MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+						return errors.New("foo")
 					},
-				}
-			}(),
-			expectErr: true,
+				},
+			),
+			ctx:            context.Background(),
+			expectMergeErr: true,
 		},
 		{
+			name: "context expired",
+			engine: newMultiPDFEngines(
+				gotenberg.PDFEngineMock{
+					MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+						return nil
+					},
+				},
+			),
 			ctx: func() context.Context {
-				ctx, cancel := context.WithCancel(context.TODO())
-				defer cancel()
+				ctx, cancel := context.WithCancel(context.Background())
+				cancel()

 				return ctx
 			}(),
-			engines: func() []gotenberg.PDFEngine {
-				return []gotenberg.PDFEngine{
-					ProtoPDFEngine{
-						merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-							return nil
-						},
-					},
-				}
-			}(),
-			expectErr: true,
+			expectMergeErr: true,
 		},
-	} {
-		multi := newMultiPDFEngines(tc.engines...)
-		err := multi.Merge(tc.ctx, nil, nil, "")
+	}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.engine.Merge(tc.ctx, zap.NewNop(), nil, "")

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectMergeErr && err == nil {
+				t.Errorf("expected engine.Merge() error, but got none")
+			}
+
+			if !tc.expectMergeErr && err != nil {
+				t.Errorf("expected no error from engine.Merge(), but got: %v", err)
+			}
+		})
 	}
 }

 func TestMultiPDFEngines_Convert(t *testing.T) {
-	for i, tc := range []struct {
-		ctx       context.Context
-		engines   []gotenberg.PDFEngine
-		expectErr bool
+	tests := []struct {
+		name             string
+		engine           *multiPDFEngines
+		ctx              context.Context
+		expectConvertErr bool
 	}{
 		{
-			ctx: context.TODO(),
-			engines: func() []gotenberg.PDFEngine {
-				return []gotenberg.PDFEngine{
-					ProtoPDFEngine{
-						convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-							return nil
-						},
+			name: "nominal behavior",
+			engine: newMultiPDFEngines(
+				gotenberg.PDFEngineMock{
+					ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+						return nil
 					},
-				}
-			}(),
+				},
+			),
+			ctx: context.Background(),
 		},
 		{
-			ctx: context.TODO(),
-			engines: func() []gotenberg.PDFEngine {
-				return []gotenberg.PDFEngine{
-					ProtoPDFEngine{
-						convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-							return errors.New("foo")
-						},
+			name: "at least one engine does not return an error",
+			engine: newMultiPDFEngines(
+				gotenberg.PDFEngineMock{
+					ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+						return errors.New("foo")
 					},
-					ProtoPDFEngine{
-						convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-							return nil
-						},
+				},
+				gotenberg.PDFEngineMock{
+					ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+						return nil
 					},
-				}
-			}(),
+				},
+			),
+			ctx: context.Background(),
 		},
 		{
-			ctx: context.TODO(),
-			engines: func() []gotenberg.PDFEngine {
-				return []gotenberg.PDFEngine{
-					ProtoPDFEngine{
-						convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-							return errors.New("foo")
-						},
+			name: "all engines return an error",
+			engine: newMultiPDFEngines(
+				gotenberg.PDFEngineMock{
+					ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+						return errors.New("foo")
 					},
-					ProtoPDFEngine{
-						convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-							return errors.New("bar")
-						},
+				},
+				gotenberg.PDFEngineMock{
+					ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+						return errors.New("foo")
 					},
-				}
-			}(),
-			expectErr: true,
+				},
+			),
+			ctx:              context.Background(),
+			expectConvertErr: true,
 		},
 		{
+			name: "context expired",
+			engine: newMultiPDFEngines(
+				gotenberg.PDFEngineMock{
+					ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+						return nil
+					},
+				},
+			),
 			ctx: func() context.Context {
-				ctx, cancel := context.WithCancel(context.TODO())
-				defer cancel()
+				ctx, cancel := context.WithCancel(context.Background())
+				cancel()

 				return ctx
 			}(),
-			engines: func() []gotenberg.PDFEngine {
-				return []gotenberg.PDFEngine{
-					ProtoPDFEngine{
-						convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-							return nil
-						},
-					},
-				}
-			}(),
-			expectErr: true,
+			expectConvertErr: true,
 		},
-	} {
-		multi := newMultiPDFEngines(tc.engines...)
-		err := multi.Convert(tc.ctx, nil, "", "", "")
+	}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.engine.Convert(tc.ctx, zap.NewNop(), "", "", "")

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectConvertErr && err == nil {
+				t.Errorf("expected engine.Convert() error, but got none")
+			}
+
+			if !tc.expectConvertErr && err != nil {
+				t.Errorf("expected no error from engine.Convert(), but got: %v", err)
+			}
+		})
 	}
 }
--- a/pkg/modules/pdfengines/pdfengines.go
+++ b/pkg/modules/pdfengines/pdfengines.go
@@ -53,6 +53,18 @@ func (mod *PDFEngines) Provision(ctx *gotenberg.Context) error {
 	names := flags.MustStringSlice("pdfengines-engines")
 	mod.disableRoutes = flags.MustBool("pdfengines-disable-routes")

+	loggerProvider, err := ctx.Module(new(gotenberg.LoggerProvider))
+	if err != nil {
+		return fmt.Errorf("get logger provider: %w", err)
+	}
+
+	logger, err := loggerProvider.(gotenberg.LoggerProvider).Logger(mod)
+	if err != nil {
+		return fmt.Errorf("get logger: %w", err)
+	}
+
+	logger = logger.Named("pdfengines")
+
 	engines, err := ctx.Modules(new(gotenberg.PDFEngine))
 	if err != nil {
 		return fmt.Errorf("get PDF engines: %w", err)
@@ -68,6 +80,13 @@ func (mod *PDFEngines) Provision(ctx *gotenberg.Context) error {
 		// Selection from user.
 		mod.names = names

+		for i, name := range names {
+			logger.Warn("unoconv-pdfengine is deprecated; prefer uno-pdfengine instead")
+			if name == "unoconv-pdfengine" {
+				mod.names[i] = "uno-pdfengine"
+			}
+		}
+
 		return nil
 	}

--- a/pkg/modules/pdfengines/pdfengines_test.go
+++ b/pkg/modules/pdfengines/pdfengines_test.go
@@ -1,7 +1,6 @@
 package pdfengines

 import (
-	"context"
 	"errors"
 	"reflect"
 	"strings"
@@ -11,38 +10,7 @@ import (
 	"go.uber.org/zap"
 )

-type ProtoModule struct {
-	descriptor func() gotenberg.ModuleDescriptor
-}
-
-func (mod ProtoModule) Descriptor() gotenberg.ModuleDescriptor {
-	return mod.descriptor()
-}
-
-type ProtoValidator struct {
-	ProtoModule
-	validate func() error
-}
-
-func (mod ProtoValidator) Validate() error {
-	return mod.validate()
-}
-
-type ProtoPDFEngine struct {
-	ProtoValidator
-	merge   func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error
-	convert func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error
-}
-
-func (mod ProtoPDFEngine) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
-	return mod.merge(ctx, logger, inputPaths, outputPath)
-}
-
-func (mod ProtoPDFEngine) Convert(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
-	return mod.convert(ctx, logger, format, inputPath, outputPath)
-}
-
-func TestPDFEngine_Descriptor(t *testing.T) {
+func TestPDFEngines_Descriptor(t *testing.T) {
 	descriptor := PDFEngines{}.Descriptor()

 	actual := reflect.TypeOf(descriptor.New())
@@ -53,71 +21,98 @@ func TestPDFEngine_Descriptor(t *testing.T) {
 	}
 }

-func TestPDFEngine_Provision(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                *gotenberg.Context
-		expectNames        []string
-		expectEnginesCount int
-		expectErr          bool
+func TestPDFEngines_Provision(t *testing.T) {
+	tests := []struct {
+		name                 string
+		ctx                  *gotenberg.Context
+		expectPDFEngineNames []string
+		expectProvisionErr   bool
 	}{
 		{
+			name: "no selection from user",
 			ctx: func() *gotenberg.Context {
-				engine := struct{ ProtoPDFEngine }{}
-				engine.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return engine }}
+				provider := struct {
+					gotenberg.ModuleMock
+					gotenberg.LoggerProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
+				}
+				provider.LoggerMock = func(mod gotenberg.Module) (*zap.Logger, error) {
+					return zap.NewNop(), nil
+				}
+
+				engine := struct {
+					gotenberg.ModuleMock
+					gotenberg.ValidatorMock
+					gotenberg.PDFEngineMock
+				}{}
+				engine.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return engine }}
+				}
+				engine.ValidateMock = func() error {
+					return nil
 				}
-				engine.validate = func() error { return errors.New("foo") }

 				return gotenberg.NewContext(
 					gotenberg.ParsedFlags{
 						FlagSet: new(PDFEngines).Descriptor().FlagSet,
 					},
 					[]gotenberg.ModuleDescriptor{
+						provider.Descriptor(),
 						engine.Descriptor(),
 					},
 				)
 			}(),
-			expectErr: true,
+			expectPDFEngineNames: []string{"bar"},
 		},
 		{
+			name: "selection from user",
 			ctx: func() *gotenberg.Context {
-				engine := struct{ ProtoPDFEngine }{}
-				engine.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return engine }}
+				provider := struct {
+					gotenberg.ModuleMock
+					gotenberg.LoggerProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
+				}
+				provider.LoggerMock = func(mod gotenberg.Module) (*zap.Logger, error) {
+					return zap.NewNop(), nil
 				}
-				engine.validate = func() error { return nil }

-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(PDFEngines).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						engine.Descriptor(),
-					},
-				)
-			}(),
-			expectNames:        []string{"foo"},
-			expectEnginesCount: 1,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				engine1 := struct{ ProtoPDFEngine }{}
-				engine1.descriptor = func() gotenberg.ModuleDescriptor {
+				engine1 := struct {
+					gotenberg.ModuleMock
+					gotenberg.ValidatorMock
+					gotenberg.PDFEngineMock
+				}{}
+				engine1.DescriptorMock = func() gotenberg.ModuleDescriptor {
 					return gotenberg.ModuleDescriptor{ID: "a", New: func() gotenberg.Module { return engine1 }}
 				}
-				engine1.validate = func() error { return nil }
+				engine1.ValidateMock = func() error {
+					return nil
+				}

-				engine2 := struct{ ProtoPDFEngine }{}
-				engine2.descriptor = func() gotenberg.ModuleDescriptor {
+				engine2 := struct {
+					gotenberg.ModuleMock
+					gotenberg.ValidatorMock
+					gotenberg.PDFEngineMock
+				}{}
+				engine2.DescriptorMock = func() gotenberg.ModuleDescriptor {
 					return gotenberg.ModuleDescriptor{ID: "b", New: func() gotenberg.Module { return engine2 }}
 				}
-				engine2.validate = func() error { return nil }
+				engine2.ValidateMock = func() error {
+					return nil
+				}

 				fs := new(PDFEngines).Descriptor().FlagSet
 				err := fs.Parse([]string{"--pdfengines-engines=b", "--pdfengines-engines=a"})

 				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
+					t.Fatalf("expected no error from fs.Parse(), but got: %v", err)
 				}

 				return gotenberg.NewContext(
@@ -125,33 +120,47 @@ func TestPDFEngine_Provision(t *testing.T) {
 						FlagSet: fs,
 					},
 					[]gotenberg.ModuleDescriptor{
+						provider.Descriptor(),
 						engine1.Descriptor(),
 						engine2.Descriptor(),
 					},
 				)
 			}(),
-			expectNames:        []string{"b", "a"},
-			expectEnginesCount: 2,
+			expectPDFEngineNames: []string{"b", "a"},
 		},
 		{
+			name: "user select deprecated unoconv-pdfengine",
 			ctx: func() *gotenberg.Context {
-				engine1 := struct{ ProtoPDFEngine }{}
-				engine1.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "a", New: func() gotenberg.Module { return engine1 }}
+				provider := struct {
+					gotenberg.ModuleMock
+					gotenberg.LoggerProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
+				}
+				provider.LoggerMock = func(mod gotenberg.Module) (*zap.Logger, error) {
+					return zap.NewNop(), nil
 				}
-				engine1.validate = func() error { return nil }

-				engine2 := struct{ ProtoPDFEngine }{}
-				engine2.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "b", New: func() gotenberg.Module { return engine2 }}
+				engine := struct {
+					gotenberg.ModuleMock
+					gotenberg.ValidatorMock
+					gotenberg.PDFEngineMock
+				}{}
+				engine.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "uno-pdfengine", New: func() gotenberg.Module { return engine }}
+				}
+				engine.ValidateMock = func() error {
+					return nil
 				}
-				engine2.validate = func() error { return nil }

 				fs := new(PDFEngines).Descriptor().FlagSet
-				err := fs.Parse([]string{"--pdfengines-engines=b"})
+				err := fs.Parse([]string{"--pdfengines-engines=unoconv-pdfengine"})

 				if err != nil {
-					t.Fatalf("expected error but got: %v", err)
+					t.Fatalf("expected no error from fs.Parse(), but got: %v", err)
 				}

 				return gotenberg.NewContext(
@@ -159,56 +168,136 @@ func TestPDFEngine_Provision(t *testing.T) {
 						FlagSet: fs,
 					},
 					[]gotenberg.ModuleDescriptor{
-						engine1.Descriptor(),
-						engine2.Descriptor(),
+						provider.Descriptor(),
+						engine.Descriptor(),
 					},
 				)
 			}(),
-			expectNames:        []string{"b"},
-			expectEnginesCount: 2,
+			expectPDFEngineNames: []string{"uno-pdfengine"},
 		},
-	} {
-		mod := new(PDFEngines)
-		err := mod.Provision(tc.ctx)
+		{
+			name: "no logger provider",
+			ctx: func() *gotenberg.Context {
+				return gotenberg.NewContext(
+					gotenberg.ParsedFlags{
+						FlagSet: new(PDFEngines).Descriptor().FlagSet,
+					},
+					[]gotenberg.ModuleDescriptor{},
+				)
+			}(),
+			expectProvisionErr: true,
+		},
+		{
+			name: "no logger from logger provider",
+			ctx: func() *gotenberg.Context {
+				provider := struct {
+					gotenberg.ModuleMock
+					gotenberg.LoggerProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
+				}
+				provider.LoggerMock = func(mod gotenberg.Module) (*zap.Logger, error) {
+					return nil, errors.New("foo")
+				}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+				return gotenberg.NewContext(
+					gotenberg.ParsedFlags{
+						FlagSet: new(PDFEngines).Descriptor().FlagSet,
+					},
+					[]gotenberg.ModuleDescriptor{
+						provider.Descriptor(),
+					},
+				)
+			}(),
+			expectProvisionErr: true,
+		},
+		{
+			name: "no valid PDF engines",
+			ctx: func() *gotenberg.Context {
+				provider := struct {
+					gotenberg.ModuleMock
+					gotenberg.LoggerProviderMock
+				}{}
+				provider.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module {
+						return provider
+					}}
+				}
+				provider.LoggerMock = func(mod gotenberg.Module) (*zap.Logger, error) {
+					return zap.NewNop(), nil
+				}

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+				engine := struct {
+					gotenberg.ModuleMock
+					gotenberg.ValidatorMock
+					gotenberg.PDFEngineMock
+				}{}
+				engine.DescriptorMock = func() gotenberg.ModuleDescriptor {
+					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return engine }}
+				}
+				engine.ValidateMock = func() error {
+					return errors.New("foo")
+				}

-		if len(tc.expectNames) != len(mod.names) {
-			t.Errorf("test %d: expected %d names but got %d", i, len(tc.expectNames), len(mod.names))
-		}
+				return gotenberg.NewContext(
+					gotenberg.ParsedFlags{
+						FlagSet: new(PDFEngines).Descriptor().FlagSet,
+					},
+					[]gotenberg.ModuleDescriptor{
+						provider.Descriptor(),
+						engine.Descriptor(),
+					},
+				)
+			}(),
+			expectProvisionErr: true,
+		},
+	}

-		if tc.expectEnginesCount != len(mod.engines) {
-			t.Errorf("test %d: expected %d engines but got %d", i, tc.expectEnginesCount, len(mod.engines))
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			mod := new(PDFEngines)
+			err := mod.Provision(tc.ctx)

-		for index, name := range mod.names {
-			if name != tc.expectNames[index] {
-				t.Errorf("test %d: expected name at index %d to be %s, but got: %s", i, index, name, tc.expectNames[index])
+			if tc.expectProvisionErr && err == nil {
+				t.Fatal("expected mod.Provision() error, but got none")
 			}
-		}
+
+			if !tc.expectProvisionErr && err != nil {
+				t.Fatalf("expected no error from mod.Provision(), but got: %v", err)
+			}
+
+			if len(tc.expectPDFEngineNames) != len(mod.names) {
+				t.Errorf("expected %d names but got %d", len(tc.expectPDFEngineNames), len(mod.names))
+			}
+
+			for index, name := range mod.names {
+				if name != tc.expectPDFEngineNames[index] {
+					t.Errorf("expected name at index %d to be %s, but got: %s", index, name, tc.expectPDFEngineNames[index])
+				}
+			}
+		})
 	}
 }

-func TestPDFEngine_Validate(t *testing.T) {
-	for i, tc := range []struct {
-		names     []string
-		engines   []gotenberg.PDFEngine
-		expectErr bool
+func TestPDFEngines_Validate(t *testing.T) {
+	tests := []struct {
+		name              string
+		names             []string
+		engines           []gotenberg.PDFEngine
+		expectValidateErr bool
 	}{
 		{
-			expectErr: true,
-		},
-		{
+			name:  "existing PDF engine",
 			names: []string{"foo"},
 			engines: func() []gotenberg.PDFEngine {
-				engine := struct{ ProtoPDFEngine }{}
-				engine.descriptor = func() gotenberg.ModuleDescriptor {
+				engine := struct {
+					gotenberg.ModuleMock
+					gotenberg.PDFEngineMock
+				}{}
+				engine.DescriptorMock = func() gotenberg.ModuleDescriptor {
 					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return engine }}
 				}

@@ -218,15 +307,22 @@ func TestPDFEngine_Validate(t *testing.T) {
 			}(),
 		},
 		{
+			name:  "non-existing bar PDF engine",
 			names: []string{"foo", "bar", "baz"},
 			engines: func() []gotenberg.PDFEngine {
-				engine1 := struct{ ProtoPDFEngine }{}
-				engine1.descriptor = func() gotenberg.ModuleDescriptor {
+				engine1 := struct {
+					gotenberg.ModuleMock
+					gotenberg.PDFEngineMock
+				}{}
+				engine1.DescriptorMock = func() gotenberg.ModuleDescriptor {
 					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return engine1 }}
 				}

-				engine2 := struct{ ProtoPDFEngine }{}
-				engine2.descriptor = func() gotenberg.ModuleDescriptor {
+				engine2 := struct {
+					gotenberg.ModuleMock
+					gotenberg.PDFEngineMock
+				}{}
+				engine2.DescriptorMock = func() gotenberg.ModuleDescriptor {
 					return gotenberg.ModuleDescriptor{ID: "baz", New: func() gotenberg.Module { return engine2 }}
 				}

@@ -235,21 +331,31 @@ func TestPDFEngine_Validate(t *testing.T) {
 					engine2,
 				}
 			}(),
-			expectErr: true,
+			expectValidateErr: true,
 		},
-	} {
-		mod := new(PDFEngines)
-		mod.names = tc.names
-		mod.engines = tc.engines
-		err := mod.Validate()
+		{
+			name:              "no PDF engine",
+			expectValidateErr: true,
+		},
+	}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			mod := PDFEngines{
+				names:   tc.names,
+				engines: tc.engines,
+			}

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			err := mod.Validate()
+
+			if tc.expectValidateErr && err == nil {
+				t.Errorf("expected mod.Validate() error, but got none")
+			}
+
+			if !tc.expectValidateErr && err != nil {
+				t.Errorf("expected no error from mod.Validate(), but got: %v", err)
+			}
+		})
 	}
 }

@@ -259,76 +365,81 @@ func TestPDFEngines_SystemMessages(t *testing.T) {

 	messages := mod.SystemMessages()
 	if len(messages) != 1 {
-		t.Errorf("expected one and only one message but got %d", len(messages))
+		t.Errorf("expected one and only one message from mod.SystemMessages(), but got %d", len(messages))
 	}

 	expect := strings.Join(mod.names[:], " ")
 	if messages[0] != expect {
-		t.Errorf("expected message '%s' but got '%s'", expect, messages[0])
+		t.Errorf("expected message '%s' from mod.SystemMessages(), but got '%s'", expect, messages[0])
 	}
 }

-func TestPDFEngine_PDFEngine(t *testing.T) {
-	mod := new(PDFEngines)
-	mod.names = []string{"foo", "bar"}
-	mod.engines = func() []gotenberg.PDFEngine {
-		engine1 := struct{ ProtoPDFEngine }{}
-		engine1.descriptor = func() gotenberg.ModuleDescriptor {
-			return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return engine1 }}
-		}
+func TestPDFEngines_PDFEngine(t *testing.T) {
+	mod := PDFEngines{
+		names: []string{"foo", "bar"},
+		engines: func() []gotenberg.PDFEngine {
+			engine1 := struct {
+				gotenberg.ModuleMock
+				gotenberg.PDFEngineMock
+			}{}
+			engine1.DescriptorMock = func() gotenberg.ModuleDescriptor {
+				return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return engine1 }}
+			}

-		engine2 := struct{ ProtoPDFEngine }{}
-		engine2.descriptor = func() gotenberg.ModuleDescriptor {
-			return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return engine2 }}
-		}
+			engine2 := struct {
+				gotenberg.ModuleMock
+				gotenberg.PDFEngineMock
+			}{}
+			engine2.DescriptorMock = func() gotenberg.ModuleDescriptor {
+				return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return engine2 }}
+			}

-		return []gotenberg.PDFEngine{
-			engine1,
-			engine2,
-		}
-	}()
+			return []gotenberg.PDFEngine{
+				engine1,
+				engine2,
+			}
+		}(),
+	}

 	_, err := mod.PDFEngine()
 	if err != nil {
-		t.Errorf("expected no error but got: %v", err)
+		t.Errorf("expected no error from mod.PDFEngine, but got: %v", err)
 	}
 }

-func TestPDFEngine_Routes(t *testing.T) {
-	for i, tc := range []struct {
-		expectRoutes  int
-		disableRoutes bool
+func TestPDFEngines_Routes(t *testing.T) {
+	tests := []struct {
+		name              string
+		mod               PDFEngines
+		expectRoutesCount int
 	}{
 		{
-			expectRoutes: 2,
+			name: "route not disabled",
+			mod: PDFEngines{
+				engines: []gotenberg.PDFEngine{
+					gotenberg.PDFEngineMock{},
+				},
+			},
+			expectRoutesCount: 2,
 		},
 		{
-			disableRoutes: true,
+			name: "route disabled",
+			mod: PDFEngines{
+				disableRoutes: true,
+			},
 		},
-	} {
-		mod := new(PDFEngines)
-		mod.engines = []gotenberg.PDFEngine{
-			struct{ ProtoPDFEngine }{},
-		}
-		mod.disableRoutes = tc.disableRoutes
+	}

-		routes, err := mod.Routes()
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			routes, err := tc.mod.Routes()
+			if err != nil {
+				t.Fatalf("expected no error from mod.Routes(), but got: %v", err)
+			}

-		if tc.expectRoutes != len(routes) {
-			t.Errorf("test %d: expected %d routes but got %d", i, tc.expectRoutes, len(routes))
-		}
+			if tc.expectRoutesCount != len(routes) {
+				t.Errorf("expected %d routes from mod.Routes(), but got %d", tc.expectRoutesCount, len(routes))
+			}
+		})
 	}
 }
-
-// Interface guards.
-var (
-	_ gotenberg.Module    = (*ProtoModule)(nil)
-	_ gotenberg.Validator = (*ProtoValidator)(nil)
-	_ gotenberg.Module    = (*ProtoValidator)(nil)
-	_ gotenberg.PDFEngine = (*ProtoPDFEngine)(nil)
-	_ gotenberg.Module    = (*ProtoPDFEngine)(nil)
-	_ gotenberg.Validator = (*ProtoPDFEngine)(nil)
-)
--- a/pkg/modules/pdfengines/routes_test.go
+++ b/pkg/modules/pdfengines/routes_test.go
@@ -13,8 +13,9 @@ import (
 )

 func TestMergeHandler(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                    *api.MockContext
+	tests := []struct {
+		name                   string
+		ctx                    *api.ContextMock
 		engine                 gotenberg.PDFEngine
 		expectErr              bool
 		expectHTTPErr          bool
@@ -22,34 +23,75 @@ func TestMergeHandler(t *testing.T) {
 		expectOutputPathsCount int
 	}{
 		{
-			ctx:              &api.MockContext{Context: &api.Context{}},
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-
+			name: "nominal behavior",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"foo.pdf": "/foo/foo.pdf",
 				})

 				return ctx
 			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-						return errors.New("foo")
-					},
-				}
+			engine: gotenberg.PDFEngineMock{
+				MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+					return nil
+				},
+			},
+			expectOutputPathsCount: 1,
+		},
+		{
+			name:             "invalid form data: no PDF",
+			ctx:              &api.ContextMock{Context: &api.Context{}},
+			expectErr:        true,
+			expectHTTPErr:    true,
+			expectHTTPStatus: http.StatusBadRequest,
+		},
+		{
+			name: "merge fail",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
+				ctx.SetFiles(map[string]string{
+					"foo.pdf": "/foo/foo.pdf",
+				})
+
+				return ctx
 			}(),
+			engine: gotenberg.PDFEngineMock{
+				MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+					return errors.New("foo")
+				},
+			},
 			expectErr: true,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			name: "nominal behavior with a PDF format",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
+				ctx.SetFiles(map[string]string{
+					"foo.pdf": "/foo/foo.pdf",
+				})
+				ctx.SetValues(map[string][]string{
+					"pdfFormat": {
+						gotenberg.FormatPDFA1a,
+					},
+				})

+				return ctx
+			}(),
+			engine: gotenberg.PDFEngineMock{
+				MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+					return nil
+				},
+				ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+					return nil
+				},
+			},
+			expectOutputPathsCount: 1,
+		},
+		{
+			name: "convert to PDF format fail",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"foo.pdf": "/foo/foo.pdf",
 				})
@@ -61,24 +103,20 @@ func TestMergeHandler(t *testing.T) {

 				return ctx
 			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-						return nil
-					},
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return gotenberg.ErrPDFFormatNotAvailable
-					},
-				}
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
+			engine: gotenberg.PDFEngineMock{
+				MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+					return nil
+				},
+				ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+					return errors.New("foo")
+				},
+			},
+			expectErr: true,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-
+			name: "invalid PDF format",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"foo.pdf": "/foo/foo.pdf",
 				})
@@ -90,125 +128,82 @@ func TestMergeHandler(t *testing.T) {

 				return ctx
 			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-						return nil
-					},
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return errors.New("foo")
-					},
-				}
-			}(),
-			expectErr: true,
+			engine: gotenberg.PDFEngineMock{
+				MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+					return nil
+				},
+				ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+					return gotenberg.ErrPDFFormatNotAvailable
+				},
+			},
+			expectErr:        true,
+			expectHTTPErr:    true,
+			expectHTTPStatus: http.StatusBadRequest,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-
+			name: "cannot add output paths",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
+				ctx.SetFiles(map[string]string{
+					"foo.pdf": "/foo/foo.pdf",
+				})
 				ctx.SetCancelled(true)
-				ctx.SetFiles(map[string]string{
-					"foo.pdf": "/foo/foo.pdf",
-				})

 				return ctx
 			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-						return nil
-					},
-				}
-			}(),
+			engine: gotenberg.PDFEngineMock{
+				MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+					return nil
+				},
+			},
 			expectErr: true,
 		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+	}

-				ctx.SetFiles(map[string]string{
-					"foo.pdf": "/foo/foo.pdf",
-				})
-				ctx.SetValues(map[string][]string{
-					"pdfFormat": {
-						"foo",
-					},
-				})
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			c := echo.New().NewContext(nil, nil)
+			c.Set("context", tc.ctx.Context)

-				return ctx
-			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-						return nil
-					},
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return nil
-					},
-				}
-			}(),
-			expectOutputPathsCount: 1,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
+			err := mergeRoute(tc.engine).Handler(c)

-				ctx.SetFiles(map[string]string{
-					"foo.pdf": "/foo/foo.pdf",
-				})
-
-				return ctx
-			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					merge: func(_ context.Context, _ *zap.Logger, _ []string, _ string) error {
-						return nil
-					},
-				}
-			}(),
-			expectOutputPathsCount: 1,
-		},
-	} {
-		c := echo.New().NewContext(nil, nil)
-		c.Set("context", tc.ctx.Context)
-
-		err := mergeRoute(tc.engine).Handler(c)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		var httpErr api.HTTPError
-		isHTTPErr := errors.As(err, &httpErr)
-
-		if tc.expectHTTPErr && !isHTTPErr {
-			t.Errorf("test %d: expected HTTP error but got: %v", i, err)
-		}
-
-		if !tc.expectHTTPErr && isHTTPErr {
-			t.Errorf("test %d: expected no HTTP error but got one: %v", i, httpErr)
-		}
-
-		if err != nil && tc.expectHTTPErr && isHTTPErr {
-			status, _ := httpErr.HTTPError()
-			if status != tc.expectHTTPStatus {
-				t.Errorf("test %d: expected %d HTTP status code but got %d", i, tc.expectHTTPStatus, status)
+			if tc.expectErr && err == nil {
+				t.Fatal("expected error from merge handler, but got none")
 			}
-		}

-		if tc.expectOutputPathsCount != len(tc.ctx.OutputPaths()) {
-			t.Errorf("test %d: expected %d output paths but got %d", i, tc.expectOutputPathsCount, len(tc.ctx.OutputPaths()))
-		}
+			if !tc.expectErr && err != nil {
+				t.Fatalf("expected no error from merge handler, but got: %v", err)
+			}
+
+			var httpErr api.HTTPError
+			isHTTPErr := errors.As(err, &httpErr)
+
+			if tc.expectHTTPErr && !isHTTPErr {
+				t.Errorf("expected HTTP error from merge handler, but got: %v", err)
+			}
+
+			if !tc.expectHTTPErr && isHTTPErr {
+				t.Errorf("expected no HTTP error from merge handler, but got one: %v", httpErr)
+			}
+
+			if err != nil && tc.expectHTTPErr && isHTTPErr {
+				status, _ := httpErr.HTTPError()
+				if status != tc.expectHTTPStatus {
+					t.Errorf("expected %d HTTP status code from merge handler, but got %d", tc.expectHTTPStatus, status)
+				}
+			}
+
+			if tc.expectOutputPathsCount != len(tc.ctx.OutputPaths()) {
+				t.Errorf("expected %d output paths from merge handler, but got %d", tc.expectOutputPathsCount, len(tc.ctx.OutputPaths()))
+			}
+		})
 	}
 }

 func TestConvertHandler(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                    *api.MockContext
+	tests := []struct {
+		name                   string
+		ctx                    *api.ContextMock
 		engine                 gotenberg.PDFEngine
 		expectErr              bool
 		expectHTTPErr          bool
@@ -216,132 +211,109 @@ func TestConvertHandler(t *testing.T) {
 		expectOutputPathsCount int
 	}{
 		{
-			ctx:              &api.MockContext{Context: &api.Context{}},
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"pdfFormat": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-
+			name: "nominal behavior",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"foo.pdf": "/foo/foo.pdf",
 				})
 				ctx.SetValues(map[string][]string{
 					"pdfFormat": {
-						"foo",
+						gotenberg.FormatPDFA1a,
 					},
 				})

 				return ctx
 			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return gotenberg.ErrPDFFormatNotAvailable
-					},
-				}
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-
-				ctx.SetFiles(map[string]string{
-					"foo.pdf": "/foo/foo.pdf",
-				})
-				ctx.SetValues(map[string][]string{
-					"pdfFormat": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return errors.New("foo")
-					},
-				}
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-
-				ctx.SetCancelled(true)
-				ctx.SetFiles(map[string]string{
-					"foo.pdf": "/foo/foo.pdf",
-				})
-				ctx.SetValues(map[string][]string{
-					"pdfFormat": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return nil
-					},
-				}
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-
-				ctx.SetFiles(map[string]string{
-					"foo.pdf": "/foo/foo.pdf",
-				})
-				ctx.SetValues(map[string][]string{
-					"pdfFormat": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return nil
-					},
-				}
-			}(),
+			engine: gotenberg.PDFEngineMock{
+				ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+					return nil
+				},
+			},
 			expectOutputPathsCount: 1,
 		},
 		{
-			ctx: func() *api.MockContext {
-				ctx := &api.MockContext{Context: &api.Context{}}
-
+			name: "nominal behavior, but with 3 PDFs",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
+				ctx.SetFiles(map[string]string{
+					"foo.pdf": "/foo/foo.pdf",
+					"bar.pdf": "/bar/bar.pdf",
+					"baz.pdf": "/baz/baz.pdf",
+				})
+				ctx.SetValues(map[string][]string{
+					"pdfFormat": {
+						gotenberg.FormatPDFA1a,
+					},
+				})
+
+				return ctx
+			}(),
+			engine: gotenberg.PDFEngineMock{
+				ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+					return nil
+				},
+			},
+			expectOutputPathsCount: 3,
+		},
+		{
+			name: "invalid form data: no PDF",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
+				ctx.SetValues(map[string][]string{
+					"pdfFormat": {
+						gotenberg.FormatPDFA1a,
+					},
+				})
+
+				return ctx
+			}(),
+			expectErr:        true,
+			expectHTTPErr:    true,
+			expectHTTPStatus: http.StatusBadRequest,
+		},
+		{
+			name: "invalid form data: no PDF format",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
+				ctx.SetFiles(map[string]string{
+					"foo.pdf": "/foo/foo.pdf",
+				})
+
+				return ctx
+			}(),
+			expectErr:        true,
+			expectHTTPErr:    true,
+			expectHTTPStatus: http.StatusBadRequest,
+		},
+		{
+			name: "convert to PDF format fail",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
+				ctx.SetFiles(map[string]string{
+					"foo.pdf": "/foo/foo.pdf",
+				})
+				ctx.SetValues(map[string][]string{
+					"pdfFormat": {
+						gotenberg.FormatPDFA1a,
+					},
+				})
+
+				return ctx
+			}(),
+			engine: gotenberg.PDFEngineMock{
+				ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+					return errors.New("foo")
+				},
+			},
+			expectErr: true,
+		},
+		{
+			name: "PDF format not available",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
 				ctx.SetFiles(map[string]string{
 					"foo.pdf": "/foo/foo.pdf",
-					"bar.pdf": "/foo/bar.pdf",
 				})
 				ctx.SetValues(map[string][]string{
 					"pdfFormat": {
@@ -351,49 +323,76 @@ func TestConvertHandler(t *testing.T) {

 				return ctx
 			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return nil
-					},
-				}
-			}(),
-			expectOutputPathsCount: 2,
+			engine: gotenberg.PDFEngineMock{
+				ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+					return gotenberg.ErrPDFFormatNotAvailable
+				},
+			},
+			expectErr:        true,
+			expectHTTPErr:    true,
+			expectHTTPStatus: http.StatusBadRequest,
 		},
-	} {
-		c := echo.New().NewContext(nil, nil)
-		c.Set("context", tc.ctx.Context)
+		{
+			name: "cannot add output paths",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: &api.Context{}}
+				ctx.SetFiles(map[string]string{
+					"foo.pdf": "/foo/foo.pdf",
+				})
+				ctx.SetValues(map[string][]string{
+					"pdfFormat": {
+						gotenberg.FormatPDFA1a,
+					},
+				})
+				ctx.SetCancelled(true)

-		err := convertRoute(tc.engine).Handler(c)
+				return ctx
+			}(),
+			engine: gotenberg.PDFEngineMock{
+				ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
+					return nil
+				},
+			},
+			expectErr: true,
+		},
+	}

-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			c := echo.New().NewContext(nil, nil)
+			c.Set("context", tc.ctx.Context)

-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			err := convertRoute(tc.engine).Handler(c)

-		var httpErr api.HTTPError
-		isHTTPErr := errors.As(err, &httpErr)
-
-		if tc.expectHTTPErr && !isHTTPErr {
-			t.Errorf("test %d: expected HTTP error but got: %v", i, err)
-		}
-
-		if !tc.expectHTTPErr && isHTTPErr {
-			t.Errorf("test %d: expected no HTTP error but got one: %v", i, httpErr)
-		}
-
-		if err != nil && tc.expectHTTPErr && isHTTPErr {
-			status, _ := httpErr.HTTPError()
-			if status != tc.expectHTTPStatus {
-				t.Errorf("test %d: expected %d HTTP status code but got %d", i, tc.expectHTTPStatus, status)
+			if tc.expectErr && err == nil {
+				t.Fatal("expected error from convert handler, but got none")
 			}
-		}

-		if tc.expectOutputPathsCount != len(tc.ctx.OutputPaths()) {
-			t.Errorf("test %d: expected %d output paths but got %d", i, tc.expectOutputPathsCount, len(tc.ctx.OutputPaths()))
-		}
+			if !tc.expectErr && err != nil {
+				t.Fatalf("expected no error from convert handler, but got: %v", err)
+			}
+
+			var httpErr api.HTTPError
+			isHTTPErr := errors.As(err, &httpErr)
+
+			if tc.expectHTTPErr && !isHTTPErr {
+				t.Errorf("expected HTTP error from convert handler, but got: %v", err)
+			}
+
+			if !tc.expectHTTPErr && isHTTPErr {
+				t.Errorf("expected no HTTP error from convert handler, but got one: %v", httpErr)
+			}
+
+			if err != nil && tc.expectHTTPErr && isHTTPErr {
+				status, _ := httpErr.HTTPError()
+				if status != tc.expectHTTPStatus {
+					t.Errorf("expected %d HTTP status code from convert handler, but got %d", tc.expectHTTPStatus, status)
+				}
+			}
+
+			if tc.expectOutputPathsCount != len(tc.ctx.OutputPaths()) {
+				t.Errorf("expected %d output paths from convert handler, but got %d", tc.expectOutputPathsCount, len(tc.ctx.OutputPaths()))
+			}
+		})
 	}
 }
--- a/pkg/modules/pdftk/pdftk.go
+++ b/pkg/modules/pdftk/pdftk.go
@@ -83,7 +83,7 @@ func (engine PDFtk) Merge(ctx context.Context, logger *zap.Logger, inputPaths []
 	activeInstancesCount += 1
 	activeInstancesCountMu.Unlock()

-	err = cmd.Exec()
+	_, err = cmd.Exec()

 	activeInstancesCountMu.Lock()
 	activeInstancesCount -= 1
--- a/pkg/modules/qpdf/qpdf.go
+++ b/pkg/modules/qpdf/qpdf.go
@@ -85,7 +85,7 @@ func (engine QPDF) Merge(ctx context.Context, logger *zap.Logger, inputPaths []s
 	activeInstancesCount += 1
 	activeInstancesCountMu.Unlock()

-	err = cmd.Exec()
+	_, err = cmd.Exec()

 	activeInstancesCountMu.Lock()
 	activeInstancesCount -= 1
--- a/pkg/modules/webhook/middleware_test.go
+++ b/pkg/modules/webhook/middleware_test.go
@@ -6,7 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"math/rand"
 	"mime/multipart"
 	"net/http"
@@ -252,7 +252,7 @@ func TestWebhookMiddlewareGuards(t *testing.T) {

 		c := srv.NewContext(tc.request, httptest.NewRecorder())

-		ctx := &api.MockContext{Context: &api.Context{}}
+		ctx := &api.ContextMock{Context: &api.Context{}}
 		ctx.SetEchoContext(c)

 		c.Set("context", ctx.Context)
@@ -399,7 +399,7 @@ func TestWebhookMiddlewareAsynchronousProcess(t *testing.T) {
 			c.Set("trace", "foo")
 			c.Set("startTime", time.Now())

-			ctx := &api.MockContext{Context: &api.Context{}}
+			ctx := &api.ContextMock{Context: &api.Context{}}
 			ctx.SetLogger(zap.NewNop())
 			ctx.SetEchoContext(c)

@@ -450,7 +450,7 @@ func TestWebhookMiddlewareAsynchronousProcess(t *testing.T) {
 						}

 						if contentType == echo.MIMEApplicationJSONCharsetUTF8 {
-							body, err := ioutil.ReadAll(c.Request().Body)
+							body, err := io.ReadAll(c.Request().Body)
 							if err != nil {
 								errChan <- err
 								return nil
@@ -489,7 +489,7 @@ func TestWebhookMiddlewareAsynchronousProcess(t *testing.T) {
 							t.Errorf("test %d: expected '%s' '%s' to contain '%s'", i, echo.HeaderContentDisposition, contentDisposition, tc.expectWebhookFilename)
 						}

-						body, err := ioutil.ReadAll(c.Request().Body)
+						body, err := io.ReadAll(c.Request().Body)
 						if err != nil {
 							errChan <- err
 							return nil
--- a/pkg/standard/imports.go
+++ b/pkg/standard/imports.go
@@ -7,7 +7,7 @@ import (
 	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/gc"
 	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice"
 	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/pdfengine"
-	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/unoconv"
+	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/libreoffice/uno"
 	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/logging"
 	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/pdfcpu"
 	_ "github.com/gotenberg/gotenberg/v7/pkg/modules/pdfengines"
--- a/scripts/release.sh
+++ b/scripts/release.sh
@@ -38,13 +38,11 @@ docker buildx build \
  -f build/Dockerfile .

 # Cloud Run variant.
+# Only linux/amd64! See https://github.com/gotenberg/gotenberg/issues/505#issuecomment-1264679278.
 docker buildx build \
  --build-arg DOCKER_REPOSITORY="$DOCKER_REPOSITORY" \
  --build-arg GOTENBERG_VERSION="$GOTENBERG_VERSION" \
  --platform linux/amd64 \
-  --platform linux/arm64 \
-  --platform linux/arm/v7 \
-  --platform linux/386 \
  -t "$DOCKER_REPOSITORY/gotenberg:latest-cloudrun" \
  -t "$DOCKER_REPOSITORY/gotenberg:${SEMVER[0]}-cloudrun" \
  -t "$DOCKER_REPOSITORY/gotenberg:${SEMVER[0]}.${SEMVER[1]}-cloudrun" \
--- a/test/Dockerfile
+++ b/test/Dockerfile
@@ -3,7 +3,7 @@ ARG DOCKER_REPOSITORY
 ARG GOTENBERG_VERSION
 ARG GOLANGCI_LINT_VERSION

-FROM golang:$GOLANG_VERSION-stretch as golang
+FROM golang:$GOLANG_VERSION-bullseye as golang

 # We're extending the Gotenberg's Docker image because our code relies on external
 # dependencies like Google Chrome, LibreOffice, etc.
@@ -42,4 +42,4 @@ RUN apt-get update -qq &&\
 # Pristine working directory.
 WORKDIR /tests

-ENTRYPOINT [ "docker-entrypoint.sh" ]
+ENTRYPOINT [ "/usr/bin/tini", "--", "docker-entrypoint.sh" ]
--- a/test/gotest.sh
+++ b/test/gotest.sh
@@ -2,5 +2,6 @@

 set -x

-go test -race -covermode=atomic -coverprofile=/tests/coverage.txt ./...
+# TODO: remove -buildvcs=false when fix for https://github.com/golang/go/issues/51723 is live.
+go test -buildvcs=false -race -covermode=atomic -coverprofile=/tests/coverage.txt ./...
 go tool cover -html=coverage.txt -o /tests/coverage.html
--- a/test/testdata/chromium/html/sample11/font.woff
+++ b/test/testdata/chromium/html/sample11/font.woff
--- a/test/testdata/chromium/html/sample11/index.html
+++ b/test/testdata/chromium/html/sample11/index.html
@@ -1,12 +0,0 @@
-<!doctype html>
-<html lang="en">
-<head>
-    <meta charset=v"utf-8">
-    <title>Gutenberg</title>
-</head>
-<body>
-
-<p id="extra">Extra link tags <span id="not">not</span> working</p>
-
-</body>
-</html>
--- a/test/testdata/chromium/html/sample11/script.js
+++ b/test/testdata/chromium/html/sample11/script.js
@@ -1,2 +0,0 @@
-let extra = document.getElementById('extra')
-extra.innerText = extra.innerText + ' and extra JavaScript tags too!'
--- a/test/testdata/chromium/html/sample11/style.css
+++ b/test/testdata/chromium/html/sample11/style.css
@@ -1,14 +0,0 @@
-@font-face {
-    font-family: 'Local';
-    src: url('font.woff') format('woff');
-    font-weight: normal;
-    font-style: normal;
-}
-
-#extra {
-    font-family: 'Local'
-}
-
-#not {
-    display: none;
-}
Author	SHA1	Message	Date
Julien Neuhart	1f784ad44c	chore(chromium): add test without custom header/footer templates	2022-10-21 12:10:16 +02:00
Julien Neuhart	f89726752f	feat(chromium): add new omitBackground form field (closes #226 )	2022-10-21 11:51:06 +02:00
Julien Neuhart	921b6b7ba4	chore: upgrade golangci-lint from 1.49 to 1.50	2022-10-21 11:51:06 +02:00
Julien Neuhart	6c5cc7a0ce	chore: update Go dependencies	2022-10-21 11:51:06 +02:00
Yohann Tilotti	f851e2f2cf	fix(libreoffice): Typo error on mkdir	2022-10-17 22:16:44 +02:00
Julien Neuhart	b73207f29a	fix: websocket timeout reached (fixes #524 )	2022-10-17 10:50:55 +02:00
Julien Neuhart	8d8f0b55ea	chore: update Go dependencies	2022-10-17 10:50:55 +02:00
Julien Neuhart	0e1e9b9cf3	fix: only linux/amd64 for Cloud Run	2022-10-03 10:25:32 +02:00
Julien Neuhart	ab4eed78af	chore: update PDFtk from v3.3.2 to v3.3.3	2022-10-03 10:23:18 +02:00
Julien Neuhart	8a36c15d5c	chore: update Noto emoji from v2.034 to v2.038	2022-10-03 10:22:31 +02:00
Julien Neuhart	bd895286bc	chore: update Go dependencies	2022-10-03 10:21:49 +02:00
Julien Neuhart	b76990ec16	feat(chromium): new flags chromium-allow-insecure-localhost and chromium-host-resolver-rules	2022-09-01 18:04:00 +02:00
Julien Neuhart	9bc93c5cf5	chore: remove ioutil package	2022-09-01 18:04:00 +02:00
Julien Neuhart	1d8ae79f84	feat(chromium): add ReturnAsStream support	2022-09-01 18:04:00 +02:00
Julien Neuhart	4269aa2422	chore: update Go dependencies	2022-09-01 18:04:00 +02:00
Julien Neuhart	c887dc1ec8	chore: upgrade golangci-lint to version from version 1.48 to 1.49	2022-09-01 18:04:00 +02:00
Julien Neuhart	8bbacd691d	chore: update Golang versionin go.mod file	2022-08-19 15:24:09 +02:00
Julien Neuhart	d8f3f85fb7	fix: replace depracted io/ioutil package with os package	2022-08-19 15:01:31 +02:00
Julien Neuhart	159c0b3350	fix: Golang Docker image for tests version	2022-08-19 14:52:36 +02:00
Julien Neuhart	45788f3235	chore: upgrade Golang dependencies	2022-08-19 14:11:36 +02:00
Julien Neuhart	4c85c6ccdf	chore: upgrade from Golang 1.18 to 1.19, golangci-lint from 1.46 to 1.48	2022-08-19 14:03:32 +02:00
Julien Neuhart	08408ae005	chore: update Go dependencies	2022-06-07 15:08:04 +02:00
Julien Neuhart	d470279fb7	chore: update golangci-lint version	2022-06-07 14:43:33 +02:00
Julien Neuhart	8260458f8f	Revert "fix(chromium): regex only accepts tmp folder by default (#429 )" This reverts commit `27018fa8e2`.	2022-03-22 10:48:01 +01:00
Julien Neuhart	0512dd1e86	fix(tests): add -buildvcs=false as a temporary fix for go 1.18 bug (see https://github.com/golang/go/issues/51723 )	2022-03-21 17:13:35 +01:00
Julien Neuhart	4972019cb9	chore: update golang-ci-lint	2022-03-21 16:46:46 +01:00
Julien Neuhart	5e615cab52	chore: upgrade go to 1.18 and update Go dependencies	2022-03-21 16:46:15 +01:00
Julien Neuhart	64ea2b6d3b	fix(libreoffice): start the long-running listener on the first conversion (fixes #420 )	2022-03-21 16:39:52 +01:00
Gabor Szabad	27018fa8e2	fix(chromium): regex only accepts tmp folder by default (#429 )	2022-02-25 13:52:27 +01:00
Julien Neuhart	263d634801	chore: rename MockContext to ContextMock and move it to a dedicated go file	2022-02-09 16:09:48 +01:00
Julien Neuhart	c61c33f71c	chore: update LICENSE	2022-02-09 10:41:50 +01:00
Julien Neuhart	bfb30b8fed	chore: remove Go Report Card from README (not working)	2022-02-08 19:46:53 +01:00
Julien Neuhart	ca3e27937e	chore(uno): update uno-listener-restart-threshold flag description	2022-02-08 19:46:31 +01:00
Julien Neuhart	50c34a4186	fix(uno): repare not working test	2022-02-08 19:45:39 +01:00
Julien Neuhart	84875aaf82	fix(chromium): remove local files from extra ling tags & extra script tags (closes #418 )	2022-02-08 19:45:10 +01:00
Julien Neuhart	b7a8b95820	fix(uno): close tcp connexions to the LibreOffice listener, better health check that take the restart into account	2022-02-08 16:12:41 +01:00
Julien Neuhart	5cad5ca11a	fix: PDFtk new binary URL	2022-02-08 11:33:55 +01:00
Julien Neuhart	7598de29dd	chore: upgrade golangci-lint ot v1.44.0	2022-02-08 11:33:55 +01:00
Julien Neuhart	af6ffe67c8	chore: upgrade PDFtk to v3.3.2	2022-02-08 11:33:55 +01:00
Julien Neuhart	6944c4b3bf	chore: upgrade Noto Color Emoji font to v2.034	2022-02-08 11:33:55 +01:00
Julien Neuhart	24817d5707	feat: add more PDF formats, drastically improve LibreOffice long-running instance management	2022-02-08 11:33:55 +01:00
Julien Neuhart	3d855712ee	chore: update Go dependencies	2022-02-08 11:33:55 +01:00
Julien Neuhart	872263d253	feat: switch from top to htop	2022-01-05 15:46:20 +01:00
Julien Neuhart	1c491fb1c5	fix: use bullseye-backports distribution instead of sid for installing LibreOffice (fix #403 )	2022-01-05 14:59:38 +01:00
Julien Neuhart	29374c579a	chore: update Go dependencies	2021-12-30 17:45:16 +01:00
Julien Neuhart	206d7b6ca9	fix(chromium): typo in godoc <link> -> <script>	2021-12-27 17:49:06 +01:00
Julien Neuhart	ab6ca8c894	chore(README): improve Gotenberg description	2021-12-27 17:34:10 +01:00
Kaijia Feng	e7f5fde051	feat: add Noto CJK fonts	2021-12-27 17:21:20 +01:00