adding moar favicons

Add a /ping endpoint

.github/CONTRIBUTING.md

@@ -1,6 +1,6 @@
 # Contributing
 
-Hi! Thank your for considering contributing to Gotenberg. You'll
+Hi! Thank you for considering contributing to Gotenberg. You'll
 find below useful information about how to contribute to the Gotenberg project.
 
 ## Contributing code
@@ -8,8 +8,9 @@ find below useful information about how to contribute to the Gotenberg project.
 ### Install from sources
 
 1. Install and run the latest version of Docker
-2. Fork this repository
-3. Clone it to your local Go environment (requires *Go* >= 1.11)
+2. Verify your Go version (>= 1.11)
+3. Fork this repository
+4. Clone it outside of your `GOPATH` (we're using Go modules)
 
 ### Working with git
 

.travis.yml

@@ -22,4 +22,4 @@ jobs:
       script: make tests
     - stage: publish
       if: tag IS present
-      script: ./scripts/publish.sh $TRAVIS_TAG $DOCKER_USER $DOCKER_PASS
+      script: make publish VERSION=$TRAVIS_TAG DOCKER_USER=$DOCKER_USER DOCKER_PASSWORD=$DOCKER_PASS

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2018 TheCodingMachine
+Copyright (c) 2019 TheCodingMachine
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -1,9 +1,12 @@
-VERSION=snapshot
 GOLANG_VERSION=1.11.2
+VERSION=snapshot
+DOCKER_USER=
+DOCKER_PASSWORD=
 
 # generate documentation.
 doc:
-	static-docs --in build/docs --out docs --theme gotenberg --title Gotenberg --subtitle "A Docker-powered stateless API for converting HTML, Markdown and Office documents to PDF."
+	docker build --build-arg GOLANG_VERSION=$(GOLANG_VERSION) -t thecodingmachine/gotenberg:docs -f build/docs/Dockerfile . 
+	docker run --rm -it -v "$(PWD):/docs" thecodingmachine/gotenberg:docs
 
 # gofmt and goimports all go files.
 fmt:
@@ -27,4 +30,8 @@ image:
 
 # start the API using previously built Docker image.
 gotenberg:
-	docker run -it --rm -p "3000:3000" thecodingmachine/gotenberg:$(VERSION)
+	docker run -it --rm -p "3000:3000" thecodingmachine/gotenberg:$(VERSION)
+
+# publish Gotenberg images according to version.
+publish:
+	./scripts/publish.sh $(GOLANG_VERSION) $(VERSION) $(DOCKER_USER) $(DOCKER_PASSWORD)

README.md

@@ -1,8 +1,9 @@
 <p align="center">
-    <img src="https://user-images.githubusercontent.com/8983173/49701110-4c8b9280-fbe8-11e8-895c-a4b9c7d2515b.png" alt="Gotenberg logo" width="250" height="250" />
+    <img src="https://user-images.githubusercontent.com/8983173/50009948-84b01e00-ffb8-11e8-850b-fc240382c626.png" alt="Gotenberg logo" width="250" height="250" />
 </p>
 <h3 align="center">Gotenberg</h3>
 <p align="center">A Docker-powered stateless API for converting HTML, Markdown and Office documents to PDF.</p>
+<p align="center"><a href="https://thecodingmachine.github.io/gotenberg">Documentation</a> &#183; <a href="/.github/CONTRIBUTING.md">Contributing</a></p>
 
 ---
 

build/base/Dockerfile

@@ -1,6 +1,4 @@
-FROM debian:stretch-slim
-
-LABEL authors="Julien Neuhart <j.neuhart@thecodingmachine.com>"
+FROM debian:9.5-slim
 
 # |--------------------------------------------------------------------------
 # | Common libraries
@@ -45,4 +43,14 @@ RUN wget -q -O - https://dl.google.com/linux/linux_signing_key.pub | apt-key add
 RUN pip3 install unoconv &&\
     # https://github.com/nextcloud/docker/issues/380
     mkdir -p /usr/share/man/man1mkdir -p /usr/share/man/man1 &&\
-    apt-get -y install libreoffice
+    apt-get -y install libreoffice
+
+# |--------------------------------------------------------------------------
+# | PDFtk
+# |--------------------------------------------------------------------------
+# |
+# | Installs PDFtk as an alternative to pdfcpu for merging PDFs.
+# | https://github.com/thecodingmachine/gotenberg/issues/29
+# |
+
+RUN apt-get -y install pdftk

build/docs/Dockerfile

@@ -0,0 +1,24 @@
+ARG GOLANG_VERSION
+
+FROM golang:${GOLANG_VERSION}-stretch
+
+# |--------------------------------------------------------------------------
+# | static
+# |--------------------------------------------------------------------------
+# |
+# | Installs the static site anti-framework – general-purpose library, 
+# | purpose-built commands for various domains.
+# |
+
+RUN go get github.com/apex/static/cmd/static-docs
+
+# |--------------------------------------------------------------------------
+# | Final touch
+# |--------------------------------------------------------------------------
+# |
+# | Last instructions of this build.
+# |
+
+WORKDIR /docs
+
+CMD [ "static-docs", "--in", "build/docs/content", "--out", "docs", "--theme", "gotenberg", "--title", "Gotenberg", "--subtitle", "A Docker-powered stateless API for converting HTML, Markdown and Office documents to PDF." ]

build/docs/content/02-html.md

@@ -33,7 +33,7 @@ $ curl --request POST \
     --url http://localhost:3000/convert/html \
     --header 'Content-Type: multipart/form-data' \
     --form files=@index.html \
-    > result.pdf
+    -o result.pdf
 ```
 
 ### Go
@@ -107,7 +107,7 @@ $ curl --request POST \
     --form files=@index.html \
     --form files=@header.html \
     --form files=@footer.html \
-    > result.pdf
+    -o result.pdf
 ```
 
 ### Go
@@ -197,7 +197,7 @@ $ curl --request POST \
     --form files=@style.css \
     --form files=@img.png \
     --form files=@font.woff \
-    > result.pdf
+    -o result.pdf
 ```
 
 ### Go
@@ -261,7 +261,7 @@ $ curl --request POST \
     --form marginLeft=0 \
     --form marginRight=0 \
     --form landscape=true \
-    > result.pdf
+    -o result.pdf
 ```
 
 ### Go
@@ -273,7 +273,7 @@ func main() {
     c := &gotenberg.Client{Hostname: "http://localhost:3000"}
     req, _ := gotenberg.NewHTMLRequest("index.html")
     req.SetPaperSize(gotenberg.A4)
-    req.SetMargins(gotenberg.NormalMargins)
+    req.SetMargins(gotenberg.NoMargins)
     req.SetLandscape(true)
     dest := "result.pdf"
     c.Store(req, dest)

build/docs/content/03-markdown.md

@@ -36,7 +36,7 @@ $ curl --request POST \
     --header 'Content-Type: multipart/form-data' \
     --form files=@index.html \
     --form files=@file.md \
-    > result.pdf
+    -o result.pdf
 ```
 
 ### Go

build/docs/content/04-office.md

@@ -36,7 +36,7 @@ $ curl --request POST \
     --header 'Content-Type: multipart/form-data' \
     --form files=@document.docx \
     --form files=@document2.docx \
-    > result.pdf
+    -o result.pdf
 ```
 
 ### Go
@@ -88,7 +88,7 @@ $ curl --request POST \
     --form paperWidth=8.27 \
     --form paperHeight=11.27 \
     --form landscape=true \
-    > result.pdf
+    -o result.pdf
 ```
 
 ### Go
@@ -119,7 +119,6 @@ $files = [
 ];
 $request = new OfficeRequest($files);
 $request->setPaperSize(Request::A4);
-$request->setMargins(Request::NO_MARGINS);
 $request->setLandscape(true);
 $dirPath = "/foo";
 $filename = $client->store($request, $dirPath);

build/docs/content/05-merge.md

@@ -19,7 +19,7 @@ $ curl --request POST \
     --header 'Content-Type: multipart/form-data' \
     --form files=@file.pdf \
     --form files=@file2.pdf \
-    > result.pdf
+    -o result.pdf
 ```
 
 ### Go

build/docs/content/06-webhook.md

@@ -28,14 +28,10 @@ import "github.com/thecodingmachine/gotenberg/pkg"
 
 func main() {
     c := &gotenberg.Client{Hostname: "http://localhost:3000"}
-    req := &gotenberg.HTMLRequest{
-        IndexFilePath: "index.html",
-        Options: &gotenberg.HTMLOptions{
-            WebHookURL: "http://myapp.com/webhook/",
-        },
-    }
+    req, _ := gotenberg.NewHTMLRequest("index.html")
+    req.SetWebhookURL("http://myapp.com/webhook/")
     dest := "result.pdf"
-    resp, err := c.Post(req)
+    resp, _ := c.Post(req)
 }
 ```
 

build/docs/content/08-liveness.md

@@ -0,0 +1,11 @@
+---
+title: Liveness
+---
+
+Gotenberg provides the endpoint `/ping` for checking the API availability with
+a simple `GET` request.
+
+This feature is especially useful for liveness/readiness probes in Kubernetes:
+
+* [Pod lifecycle](https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#container-probes)
+* [Configure Liveness and Readiness Probes](https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/)

build/lint/Dockerfile

@@ -2,8 +2,6 @@ ARG GOLANG_VERSION
 
 FROM golang:${GOLANG_VERSION}-stretch
 
-LABEL authors="Julien Neuhart <j.neuhart@thecodingmachine.com>"
-
 # |--------------------------------------------------------------------------
 # | GolangCI-Lint
 # |--------------------------------------------------------------------------

build/tests/Dockerfile

@@ -4,8 +4,6 @@ FROM golang:${GOLANG_VERSION}-stretch AS golang
 
 FROM thecodingmachine/gotenberg:base
 
-LABEL authors="Julien Neuhart <j.neuhart@thecodingmachine.com>"
-
 # |--------------------------------------------------------------------------
 # | Common libraries
 # |--------------------------------------------------------------------------

build/tests/docker-entrypoint.sh

@@ -21,4 +21,5 @@ go test github.com/thecodingmachine/gotenberg/internal/pkg/pm2 -run TestUnoconvS
 go build -o /usr/local/bin/gotenberg cmd/gotenberg/main.go
 gotenberg &
 sleep 10
-go test -race -cover -covermode=atomic github.com/thecodingmachine/gotenberg/pkg
+go test -race -cover -covermode=atomic github.com/thecodingmachine/gotenberg/pkg
+sleep 5 # allows Gotenberg to remove generated files (concurrent requests).

docs/index.html

@@ -3,8 +3,19 @@
     <meta http-equiv="x-ua-compatible" content="ie=edge"/>
     <meta name="viewport" content="width=device-width, initial-scale=1"/>
     <title>Gotenberg · A Docker-powered stateless API for converting HTML, Markdown and Office documents to PDF.</title>
+    <link rel="apple-touch-icon-precomposed" sizes="57x57" href="theme/gotenberg/img/apple-touch-icon-57x57.png"/>
+    <link rel="apple-touch-icon-precomposed" sizes="114x114" href="theme/gotenberg/img/apple-touch-icon-114x114.png"/>
+    <link rel="apple-touch-icon-precomposed" sizes="72x72" href="theme/gotenberg/img/apple-touch-icon-72x72.png"/>
+    <link rel="apple-touch-icon-precomposed" sizes="144x144" href="theme/gotenberg/img/apple-touch-icon-144x144.png"/>
+    <link rel="apple-touch-icon-precomposed" sizes="60x60" href="theme/gotenberg/img/apple-touch-icon-60x60.png"/>
+    <link rel="apple-touch-icon-precomposed" sizes="120x120" href="theme/gotenberg/img/apple-touch-icon-120x120.png"/>
+    <link rel="apple-touch-icon-precomposed" sizes="76x76" href="theme/gotenberg/img/apple-touch-icon-76x76.png"/>
+    <link rel="apple-touch-icon-precomposed" sizes="152x152" href="theme/gotenberg/img/apple-touch-icon-152x152.png"/>
+    <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-196x196.png" sizes="196x196"/>
+    <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-96x96.png" sizes="96x96"/>
     <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-32x32.png" sizes="32x32"/>
-  <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-16x16.png" sizes="16x16"/>
+    <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-16x16.png" sizes="16x16"/>
+    <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-128.png" sizes="128x128"/>
     <link rel="stylesheet" href="theme/gotenberg/css/index.css"/>
   </head>
   <body>
@@ -12,7 +23,7 @@
       <div class="Container">
         <div class="Header">
           <div class="Title center">
-            <img src="https://user-images.githubusercontent.com/8983173/49701110-4c8b9280-fbe8-11e8-895c-a4b9c7d2515b.png" alt="Gotenberg logo" width="250" height="250"/>
+            <img src="https://user-images.githubusercontent.com/8983173/50009948-84b01e00-ffb8-11e8-850b-fc240382c626.png" alt="Gotenberg logo" width="250" height="250"/>
             <span class="text">Gotenberg</span>
             <span class="subtext">A Docker-powered stateless API for converting HTML, Markdown and Office documents to PDF.</span>
           </div>
@@ -54,6 +65,10 @@
                   <a href="#scalability">Scalability</a>
                 </div>
               
+                <div class="item">
+                  <a href="#liveness">Liveness</a>
+                </div>
+              
                 <div class="item">
                   <a href="#links">Links</a>
                 </div>
@@ -105,7 +120,7 @@
 </span><span class="w">
 </span><span class="w">  </span>gotenberg<span class="p">:</span><span class="w">
 </span><span class="w">    </span>image<span class="p">:</span><span class="w"> </span>thecodingmachine/gotenberg<span class="p">:</span><span class="m">3</span><span class="w">
-</span><span class="w"></span></pre>
+</span></pre>
 
 <blockquote>
 <p>The API will be available under <code>gotenberg:3000</code> in your Docker Compose network.</p>
@@ -157,15 +172,15 @@ which will be converted to PDF.</p>
 <p>For instance:</p>
 
 <pre class="chroma"><span class="cp">&lt;!doctype html&gt;</span>
-<span class="p">&lt;</span><span class="nt">html</span> <span class="na">lang</span><span class="o">=</span><span class="s">&#34;en&#34;</span><span class="p"></span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="nt">head</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">meta</span> <span class="na">charset</span><span class="o">=</span><span class="s">&#34;utf-8&#34;</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">title</span><span class="p"></span><span class="p">&gt;</span>My PDF<span class="p">&lt;</span><span class="p">/</span><span class="nt">title</span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="p">/</span><span class="nt">head</span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="nt">body</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">h1</span><span class="p"></span><span class="p">&gt;</span>Hello world!<span class="p">&lt;</span><span class="p">/</span><span class="nt">h1</span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="p">/</span><span class="nt">body</span><span class="p">&gt;</span>
-<span class="p">&lt;</span><span class="p">/</span><span class="nt">html</span><span class="p">&gt;</span>
+<span class="p">&lt;</span><span class="nt">html</span> <span class="na">lang</span><span class="o">=</span><span class="s">&#34;en&#34;</span><span class="p">&gt;</span>
+  <span class="p">&lt;</span><span class="nt">head</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">meta</span> <span class="na">charset</span><span class="o">=</span><span class="s">&#34;utf-8&#34;</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">title</span><span class="p">&gt;</span>My PDF<span class="p">&lt;/</span><span class="nt">title</span><span class="p">&gt;</span>
+  <span class="p">&lt;/</span><span class="nt">head</span><span class="p">&gt;</span>
+  <span class="p">&lt;</span><span class="nt">body</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">h1</span><span class="p">&gt;</span>Hello world!<span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
+  <span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
+<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span>
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="html.basic.c_url" href="#html.basic.c_url">
@@ -176,7 +191,7 @@ which will be converted to PDF.</p>
 </span><span class="se"></span>    --url http://localhost:3000/convert/html <span class="se">\
 </span><span class="se"></span>    --header <span class="s1">&#39;Content-Type: multipart/form-data&#39;</span> <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@index.html <span class="se">\
-</span><span class="se"></span>    &gt; result.pdf
+</span><span class="se"></span>    -o result.pdf
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="html.basic.go" href="#html.basic.go">
@@ -185,11 +200,11 @@ which will be converted to PDF.</p>
 
 <pre class="chroma"><span class="kn">import</span> <span class="s">&#34;github.com/thecodingmachine/gotenberg/pkg&#34;</span>
 
-<span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
+<span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">c</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">Client</span><span class="p">{</span><span class="nx">Hostname</span><span class="p">:</span> <span class="s">&#34;http://localhost:3000&#34;</span><span class="p">}</span>
-    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NewHTMLRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nf">NewHTMLRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">)</span>
     <span class="nx">dest</span> <span class="o">:=</span> <span class="s">&#34;result.pdf&#34;</span>
-    <span class="nx">c</span><span class="p">.</span><span class="nx">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
+    <span class="nx">c</span><span class="p">.</span><span class="nf">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
 <span class="p">}</span>
 </pre>
 
@@ -197,16 +212,16 @@ which will be converted to PDF.</p>
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
 </a>PHP</h3>
 
-<pre class="chroma"><span class="x">use TheCodingMachine\Gotenberg\Client;
-</span><span class="x">use TheCodingMachine\Gotenberg\DocumentFactory;
-</span><span class="x">use TheCodingMachine\Gotenberg\HTMLRequest;
-</span><span class="x">
-</span><span class="x">$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
-</span><span class="x">$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
-</span><span class="x">$request = new HTMLRequest($index);
-</span><span class="x">$dirPath = &#34;/foo&#34;;
-</span><span class="x">$filename = $client-&gt;store($request, $dirPath);
-</span><span class="x"></span></pre>
+<pre class="chroma">use TheCodingMachine\Gotenberg\Client;
+use TheCodingMachine\Gotenberg\DocumentFactory;
+use TheCodingMachine\Gotenberg\HTMLRequest;
+
+$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
+$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
+$request = new HTMLRequest($index);
+$dirPath = &#34;/foo&#34;;
+$filename = $client-&gt;store($request, $dirPath);
+</pre>
 
 <h2 class="Heading"><a class="Anchor" aria-hidden="true" id="html.header_and_footer" href="#html.header_and_footer">
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
@@ -217,21 +232,21 @@ Respectively, a file named <code>header.html</code> and <code>footer.html</code>
 
 <p>Each of them <strong>has to be a complete HTML document</strong>:</p>
 
-<pre class="chroma"><span class="p">&lt;</span><span class="nt">html</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">head</span><span class="p"></span><span class="p">&gt;</span>
-        <span class="p">&lt;</span><span class="nt">style</span><span class="p"></span><span class="p">&gt;</span>
+<pre class="chroma"><span class="p">&lt;</span><span class="nt">html</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">head</span><span class="p">&gt;</span>
+        <span class="p">&lt;</span><span class="nt">style</span><span class="p">&gt;</span>
             <span class="nt">body</span> <span class="p">{</span>
                 <span class="k">font-size</span><span class="p">:</span> <span class="mi">8</span><span class="kt">rem</span><span class="p">;</span>
                 <span class="k">margin</span><span class="p">:</span> <span class="mi">4</span><span class="kt">rem</span> <span class="kc">auto</span><span class="p">;</span>
             <span class="p">}</span>
-        <span class="p">&lt;</span><span class="p">/</span><span class="nt">style</span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="p">/</span><span class="nt">head</span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">body</span><span class="p"></span><span class="p">&gt;</span>
-        <span class="p">&lt;</span><span class="nt">p</span><span class="p"></span><span class="p">&gt;</span>
-            <span class="p">&lt;</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;pageNumber&#34;</span><span class="p"></span><span class="p">&gt;&lt;</span><span class="p">/</span><span class="nt">span</span><span class="p">&gt;</span> of <span class="p">&lt;</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;totalPages&#34;</span><span class="p"></span><span class="p">&gt;&lt;</span><span class="p">/</span><span class="nt">span</span><span class="p">&gt;</span>
-        <span class="p">&lt;</span><span class="p">/</span><span class="nt">p</span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="p">/</span><span class="nt">body</span><span class="p">&gt;</span>
-<span class="p">&lt;</span><span class="p">/</span><span class="nt">html</span><span class="p">&gt;</span>
+        <span class="p">&lt;/</span><span class="nt">style</span><span class="p">&gt;</span>
+    <span class="p">&lt;/</span><span class="nt">head</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">body</span><span class="p">&gt;</span>
+        <span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;</span>
+            <span class="p">&lt;</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;pageNumber&#34;</span><span class="p">&gt;&lt;/</span><span class="nt">span</span><span class="p">&gt;</span> of <span class="p">&lt;</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;totalPages&#34;</span><span class="p">&gt;&lt;/</span><span class="nt">span</span><span class="p">&gt;</span>
+        <span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
+    <span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
+<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span>
 </pre>
 
 <p>The following classes allow you to inject printing values:</p>
@@ -258,7 +273,7 @@ Also, <code>footer.html</code> CSS properties override the ones from <code>heade
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@index.html <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@header.html <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@footer.html <span class="se">\
-</span><span class="se"></span>    &gt; result.pdf
+</span><span class="se"></span>    -o result.pdf
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="html.header_and_footer.go" href="#html.header_and_footer.go">
@@ -267,13 +282,13 @@ Also, <code>footer.html</code> CSS properties override the ones from <code>heade
 
 <pre class="chroma"><span class="kn">import</span> <span class="s">&#34;github.com/thecodingmachine/gotenberg/pkg&#34;</span>
 
-<span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
+<span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">c</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">Client</span><span class="p">{</span><span class="nx">Hostname</span><span class="p">:</span> <span class="s">&#34;http://localhost:3000&#34;</span><span class="p">}</span>
-    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NewHTMLRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">)</span>
-    <span class="nx">req</span><span class="p">.</span><span class="nx">SetHeader</span><span class="p">(</span><span class="s">&#34;header.html&#34;</span><span class="p">)</span>
-    <span class="nx">req</span><span class="p">.</span><span class="nx">SetFooter</span><span class="p">(</span><span class="s">&#34;footer.html&#34;</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nf">NewHTMLRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">.</span><span class="nf">SetHeader</span><span class="p">(</span><span class="s">&#34;header.html&#34;</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">.</span><span class="nf">SetFooter</span><span class="p">(</span><span class="s">&#34;footer.html&#34;</span><span class="p">)</span>
     <span class="nx">dest</span> <span class="o">:=</span> <span class="s">&#34;result.pdf&#34;</span>
-    <span class="nx">c</span><span class="p">.</span><span class="nx">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
+    <span class="nx">c</span><span class="p">.</span><span class="nf">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
 <span class="p">}</span>
 </pre>
 
@@ -281,20 +296,20 @@ Also, <code>footer.html</code> CSS properties override the ones from <code>heade
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
 </a>PHP</h3>
 
-<pre class="chroma"><span class="x">use TheCodingMachine\Gotenberg\Client;
-</span><span class="x">use TheCodingMachine\Gotenberg\DocumentFactory;
-</span><span class="x">use TheCodingMachine\Gotenberg\HTMLRequest;
-</span><span class="x">
-</span><span class="x">$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
-</span><span class="x">$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
-</span><span class="x">$header = DocumentFactory::makeFromPath(&#39;header.html&#39;, &#39;header.html&#39;);
-</span><span class="x">$footer = DocumentFactory::makeFromPath(&#39;footer.html&#39;, &#39;footer.html&#39;);
-</span><span class="x">$request = new HTMLRequest($index);
-</span><span class="x">$request-&gt;setHeader($header);
-</span><span class="x">$request-&gt;setFooter($footer);
-</span><span class="x">$dirPath = &#34;/foo&#34;;
-</span><span class="x">$filename = $client-&gt;store($request, $dirPath);
-</span><span class="x"></span></pre>
+<pre class="chroma">use TheCodingMachine\Gotenberg\Client;
+use TheCodingMachine\Gotenberg\DocumentFactory;
+use TheCodingMachine\Gotenberg\HTMLRequest;
+
+$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
+$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
+$header = DocumentFactory::makeFromPath(&#39;header.html&#39;, &#39;header.html&#39;);
+$footer = DocumentFactory::makeFromPath(&#39;footer.html&#39;, &#39;footer.html&#39;);
+$request = new HTMLRequest($index);
+$request-&gt;setHeader($header);
+$request-&gt;setFooter($footer);
+$dirPath = &#34;/foo&#34;;
+$filename = $client-&gt;store($request, $dirPath);
+</pre>
 
 <h2 class="Heading"><a class="Anchor" aria-hidden="true" id="html.assets" href="#html.assets">
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
@@ -308,31 +323,31 @@ are on the same level as the <code>index.html</code> file.</p>
 <p>In others words, this will work:</p>
 
 <pre class="chroma"><span class="cp">&lt;!doctype html&gt;</span>
-<span class="p">&lt;</span><span class="nt">html</span> <span class="na">lang</span><span class="o">=</span><span class="s">&#34;en&#34;</span><span class="p"></span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="nt">head</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">meta</span> <span class="na">charset</span><span class="o">=</span><span class="s">&#34;utf-8&#34;</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">title</span><span class="p"></span><span class="p">&gt;</span>My PDF<span class="p">&lt;</span><span class="p">/</span><span class="nt">title</span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="p">/</span><span class="nt">head</span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="nt">body</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">h1</span><span class="p"></span><span class="p">&gt;</span>Hello world!<span class="p">&lt;</span><span class="p">/</span><span class="nt">h1</span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;img.png&#34;</span><span class="p"></span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="p">/</span><span class="nt">body</span><span class="p">&gt;</span>
-<span class="p">&lt;</span><span class="p">/</span><span class="nt">html</span><span class="p">&gt;</span>
+<span class="p">&lt;</span><span class="nt">html</span> <span class="na">lang</span><span class="o">=</span><span class="s">&#34;en&#34;</span><span class="p">&gt;</span>
+  <span class="p">&lt;</span><span class="nt">head</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">meta</span> <span class="na">charset</span><span class="o">=</span><span class="s">&#34;utf-8&#34;</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">title</span><span class="p">&gt;</span>My PDF<span class="p">&lt;/</span><span class="nt">title</span><span class="p">&gt;</span>
+  <span class="p">&lt;/</span><span class="nt">head</span><span class="p">&gt;</span>
+  <span class="p">&lt;</span><span class="nt">body</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">h1</span><span class="p">&gt;</span>Hello world!<span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;img.png&#34;</span><span class="p">&gt;</span>
+  <span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
+<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span>
 </pre>
 
 <p>But this won’t:</p>
 
 <pre class="chroma"><span class="cp">&lt;!doctype html&gt;</span>
-<span class="p">&lt;</span><span class="nt">html</span> <span class="na">lang</span><span class="o">=</span><span class="s">&#34;en&#34;</span><span class="p"></span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="nt">head</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">meta</span> <span class="na">charset</span><span class="o">=</span><span class="s">&#34;utf-8&#34;</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">title</span><span class="p"></span><span class="p">&gt;</span>My PDF<span class="p">&lt;</span><span class="p">/</span><span class="nt">title</span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="p">/</span><span class="nt">head</span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="nt">body</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">h1</span><span class="p"></span><span class="p">&gt;</span>Hello world!<span class="p">&lt;</span><span class="p">/</span><span class="nt">h1</span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;/foo/img.png&#34;</span><span class="p"></span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="p">/</span><span class="nt">body</span><span class="p">&gt;</span>
-<span class="p">&lt;</span><span class="p">/</span><span class="nt">html</span><span class="p">&gt;</span>
+<span class="p">&lt;</span><span class="nt">html</span> <span class="na">lang</span><span class="o">=</span><span class="s">&#34;en&#34;</span><span class="p">&gt;</span>
+  <span class="p">&lt;</span><span class="nt">head</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">meta</span> <span class="na">charset</span><span class="o">=</span><span class="s">&#34;utf-8&#34;</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">title</span><span class="p">&gt;</span>My PDF<span class="p">&lt;/</span><span class="nt">title</span><span class="p">&gt;</span>
+  <span class="p">&lt;/</span><span class="nt">head</span><span class="p">&gt;</span>
+  <span class="p">&lt;</span><span class="nt">body</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">h1</span><span class="p">&gt;</span>Hello world!<span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;/foo/img.png&#34;</span><span class="p">&gt;</span>
+  <span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
+<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span>
 </pre>
 
 <p>You may also use <em>remote</em> paths for Google fonts, images and so on.</p>
@@ -353,7 +368,7 @@ see to the <a href="#office.fonts">fonts section</a>.</p>
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@style.css <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@img.png <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@font.woff <span class="se">\
-</span><span class="se"></span>    &gt; result.pdf
+</span><span class="se"></span>    -o result.pdf
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="html.assets.go" href="#html.assets.go">
@@ -362,16 +377,16 @@ see to the <a href="#office.fonts">fonts section</a>.</p>
 
 <pre class="chroma"><span class="kn">import</span> <span class="s">&#34;github.com/thecodingmachine/gotenberg/pkg&#34;</span>
 
-<span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
+<span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">c</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">Client</span><span class="p">{</span><span class="nx">Hostname</span><span class="p">:</span> <span class="s">&#34;http://localhost:3000&#34;</span><span class="p">}</span>
-    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NewHTMLRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">)</span>
-    <span class="nx">req</span><span class="p">.</span><span class="nx">SetAssets</span><span class="p">([]</span><span class="kt">string</span><span class="p">{</span>
+    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nf">NewHTMLRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">.</span><span class="nf">SetAssets</span><span class="p">([]</span><span class="kt">string</span><span class="p">{</span>
         <span class="s">&#34;font.woff&#34;</span><span class="p">,</span>
         <span class="s">&#34;img.gif&#34;</span><span class="p">,</span>
         <span class="s">&#34;style.css&#34;</span><span class="p">,</span>
     <span class="p">})</span>
     <span class="nx">dest</span> <span class="o">:=</span> <span class="s">&#34;result.pdf&#34;</span>
-    <span class="nx">c</span><span class="p">.</span><span class="nx">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
+    <span class="nx">c</span><span class="p">.</span><span class="nf">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
 <span class="p">}</span>
 </pre>
 
@@ -379,22 +394,22 @@ see to the <a href="#office.fonts">fonts section</a>.</p>
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
 </a>PHP</h3>
 
-<pre class="chroma"><span class="x">use TheCodingMachine\Gotenberg\Client;
-</span><span class="x">use TheCodingMachine\Gotenberg\DocumentFactory;
-</span><span class="x">use TheCodingMachine\Gotenberg\HTMLRequest;
-</span><span class="x">
-</span><span class="x">$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
-</span><span class="x">$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
-</span><span class="x">$assets = [
-</span><span class="x">    DocumentFactory::makeFromPath(&#39;style.css&#39;, &#39;style.css&#39;),
-</span><span class="x">    DocumentFactory::makeFromPath(&#39;img.png&#39;, &#39;img.png&#39;),
-</span><span class="x">    DocumentFactory::makeFromPath(&#39;font.woff&#39;, &#39;font.woff&#39;),
-</span><span class="x">];
-</span><span class="x">$request = new HTMLRequest($index);
-</span><span class="x">$request-&gt;setAssets($assets);
-</span><span class="x">$dirPath = &#34;/foo&#34;;
-</span><span class="x">$filename = $client-&gt;store($request, $dirPath);
-</span><span class="x"></span></pre>
+<pre class="chroma">use TheCodingMachine\Gotenberg\Client;
+use TheCodingMachine\Gotenberg\DocumentFactory;
+use TheCodingMachine\Gotenberg\HTMLRequest;
+
+$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
+$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
+$assets = [
+    DocumentFactory::makeFromPath(&#39;style.css&#39;, &#39;style.css&#39;),
+    DocumentFactory::makeFromPath(&#39;img.png&#39;, &#39;img.png&#39;),
+    DocumentFactory::makeFromPath(&#39;font.woff&#39;, &#39;font.woff&#39;),
+];
+$request = new HTMLRequest($index);
+$request-&gt;setAssets($assets);
+$dirPath = &#34;/foo&#34;;
+$filename = $client-&gt;store($request, $dirPath);
+</pre>
 
 <h2 class="Heading"><a class="Anchor" aria-hidden="true" id="html.paper_size_margins_orientation" href="#html.paper_size_margins_orientation">
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
@@ -424,7 +439,7 @@ Also, you have to set both <code>paperWidth</code> and <code>paperHeight</code>.
 </span><span class="se"></span>    --form <span class="nv">marginLeft</span><span class="o">=</span><span class="m">0</span> <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">marginRight</span><span class="o">=</span><span class="m">0</span> <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">landscape</span><span class="o">=</span><span class="nb">true</span> <span class="se">\
-</span><span class="se"></span>    &gt; result.pdf
+</span><span class="se"></span>    -o result.pdf
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="html.paper_size_margins_orientation.go" href="#html.paper_size_margins_orientation.go">
@@ -433,14 +448,14 @@ Also, you have to set both <code>paperWidth</code> and <code>paperHeight</code>.
 
 <pre class="chroma"><span class="kn">import</span> <span class="s">&#34;github.com/thecodingmachine/gotenberg/pkg&#34;</span>
 
-<span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
+<span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">c</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">Client</span><span class="p">{</span><span class="nx">Hostname</span><span class="p">:</span> <span class="s">&#34;http://localhost:3000&#34;</span><span class="p">}</span>
-    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NewHTMLRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">)</span>
-    <span class="nx">req</span><span class="p">.</span><span class="nx">SetPaperSize</span><span class="p">(</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">A4</span><span class="p">)</span>
-    <span class="nx">req</span><span class="p">.</span><span class="nx">SetMargins</span><span class="p">(</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NormalMargins</span><span class="p">)</span>
-    <span class="nx">req</span><span class="p">.</span><span class="nx">SetLandscape</span><span class="p">(</span><span class="kc">true</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nf">NewHTMLRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">.</span><span class="nf">SetPaperSize</span><span class="p">(</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">A4</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">.</span><span class="nf">SetMargins</span><span class="p">(</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NoMargins</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">.</span><span class="nf">SetLandscape</span><span class="p">(</span><span class="kc">true</span><span class="p">)</span>
     <span class="nx">dest</span> <span class="o">:=</span> <span class="s">&#34;result.pdf&#34;</span>
-    <span class="nx">c</span><span class="p">.</span><span class="nx">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
+    <span class="nx">c</span><span class="p">.</span><span class="nf">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
 <span class="p">}</span>
 </pre>
 
@@ -448,20 +463,20 @@ Also, you have to set both <code>paperWidth</code> and <code>paperHeight</code>.
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
 </a>PHP</h3>
 
-<pre class="chroma"><span class="x">use TheCodingMachine\Gotenberg\Client;
-</span><span class="x">use TheCodingMachine\Gotenberg\DocumentFactory;
-</span><span class="x">use TheCodingMachine\Gotenberg\HTMLRequest;
-</span><span class="x">use TheCodingMachine\Gotenberg\Request;
-</span><span class="x">
-</span><span class="x">$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
-</span><span class="x">$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
-</span><span class="x">$request = new HTMLRequest($index);
-</span><span class="x">$request-&gt;setPaperSize(Request::A4);
-</span><span class="x">$request-&gt;setMargins(Request::NO_MARGINS);
-</span><span class="x">$request-&gt;setLandscape(true);
-</span><span class="x">$dirPath = &#34;/foo&#34;;
-</span><span class="x">$filename = $client-&gt;store($request, $dirPath);
-</span><span class="x"></span></pre>
+<pre class="chroma">use TheCodingMachine\Gotenberg\Client;
+use TheCodingMachine\Gotenberg\DocumentFactory;
+use TheCodingMachine\Gotenberg\HTMLRequest;
+use TheCodingMachine\Gotenberg\Request;
+
+$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
+$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
+$request = new HTMLRequest($index);
+$request-&gt;setPaperSize(Request::A4);
+$request-&gt;setMargins(Request::NO_MARGINS);
+$request-&gt;setLandscape(true);
+$dirPath = &#34;/foo&#34;;
+$filename = $client-&gt;store($request, $dirPath);
+</pre>
 
               </div>
             
@@ -485,15 +500,15 @@ in the file <code>index.html</code>. This function will convert a given markdown
 <p>For instance:</p>
 
 <pre class="chroma"><span class="cp">&lt;!doctype html&gt;</span>
-<span class="p">&lt;</span><span class="nt">html</span> <span class="na">lang</span><span class="o">=</span><span class="s">&#34;en&#34;</span><span class="p"></span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="nt">head</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">meta</span> <span class="na">charset</span><span class="o">=</span><span class="s">&#34;utf-8&#34;</span><span class="p"></span><span class="p">&gt;</span>
-    <span class="p">&lt;</span><span class="nt">title</span><span class="p"></span><span class="p">&gt;</span>My PDF<span class="p">&lt;</span><span class="p">/</span><span class="nt">title</span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="p">/</span><span class="nt">head</span><span class="p">&gt;</span>
-  <span class="p">&lt;</span><span class="nt">body</span><span class="p"></span><span class="p">&gt;</span>
+<span class="p">&lt;</span><span class="nt">html</span> <span class="na">lang</span><span class="o">=</span><span class="s">&#34;en&#34;</span><span class="p">&gt;</span>
+  <span class="p">&lt;</span><span class="nt">head</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">meta</span> <span class="na">charset</span><span class="o">=</span><span class="s">&#34;utf-8&#34;</span><span class="p">&gt;</span>
+    <span class="p">&lt;</span><span class="nt">title</span><span class="p">&gt;</span>My PDF<span class="p">&lt;/</span><span class="nt">title</span><span class="p">&gt;</span>
+  <span class="p">&lt;/</span><span class="nt">head</span><span class="p">&gt;</span>
+  <span class="p">&lt;</span><span class="nt">body</span><span class="p">&gt;</span>
     {{ toHTML .DirPath &#34;file.md&#34; }}
-  <span class="p">&lt;</span><span class="p">/</span><span class="nt">body</span><span class="p">&gt;</span>
-<span class="p">&lt;</span><span class="p">/</span><span class="nt">html</span><span class="p">&gt;</span>
+  <span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
+<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span>
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="markdown.basic.c_url" href="#markdown.basic.c_url">
@@ -505,7 +520,7 @@ in the file <code>index.html</code>. This function will convert a given markdown
 </span><span class="se"></span>    --header <span class="s1">&#39;Content-Type: multipart/form-data&#39;</span> <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@index.html <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@file.md <span class="se">\
-</span><span class="se"></span>    &gt; result.pdf
+</span><span class="se"></span>    -o result.pdf
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="markdown.basic.go" href="#markdown.basic.go">
@@ -514,11 +529,11 @@ in the file <code>index.html</code>. This function will convert a given markdown
 
 <pre class="chroma"><span class="kn">import</span> <span class="s">&#34;github.com/thecodingmachine/gotenberg/pkg&#34;</span>
 
-<span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
+<span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">c</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">Client</span><span class="p">{</span><span class="nx">Hostname</span><span class="p">:</span> <span class="s">&#34;http://localhost:3000&#34;</span><span class="p">}</span>
-    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NewMarkdownRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">,</span> <span class="p">[]</span><span class="kt">string</span><span class="p">{</span><span class="s">&#34;file.md&#34;</span><span class="p">})</span>
+    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nf">NewMarkdownRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">,</span> <span class="p">[]</span><span class="kt">string</span><span class="p">{</span><span class="s">&#34;file.md&#34;</span><span class="p">})</span>
     <span class="nx">dest</span> <span class="o">:=</span> <span class="s">&#34;result.pdf&#34;</span>
-    <span class="nx">c</span><span class="p">.</span><span class="nx">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
+    <span class="nx">c</span><span class="p">.</span><span class="nf">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
 <span class="p">}</span>
 </pre>
 
@@ -526,19 +541,19 @@ in the file <code>index.html</code>. This function will convert a given markdown
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
 </a>PHP</h3>
 
-<pre class="chroma"><span class="x">use TheCodingMachine\Gotenberg\Client;
-</span><span class="x">use TheCodingMachine\Gotenberg\DocumentFactory;
-</span><span class="x">use TheCodingMachine\Gotenberg\MarkdownRequest;
-</span><span class="x">
-</span><span class="x">$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
-</span><span class="x">$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
-</span><span class="x">$markdowns = [
-</span><span class="x">    DocumentFactory::makeFromPath(&#39;file.md&#39;, &#39;file.md&#39;),
-</span><span class="x">];
-</span><span class="x">$request = new MarkdownRequest($index, $markdowns);
-</span><span class="x">$dirPath = &#34;/foo&#34;;
-</span><span class="x">$filename = $client-&gt;store($request, $dirPath);
-</span><span class="x"></span></pre>
+<pre class="chroma">use TheCodingMachine\Gotenberg\Client;
+use TheCodingMachine\Gotenberg\DocumentFactory;
+use TheCodingMachine\Gotenberg\MarkdownRequest;
+
+$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
+$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
+$markdowns = [
+    DocumentFactory::makeFromPath(&#39;file.md&#39;, &#39;file.md&#39;),
+];
+$request = new MarkdownRequest($index, $markdowns);
+$dirPath = &#34;/foo&#34;;
+$filename = $client-&gt;store($request, $dirPath);
+</pre>
 
               </div>
             
@@ -587,7 +602,7 @@ See the <a href="#scalability">scalability section</a> to find how to mitigate t
 </span><span class="se"></span>    --header <span class="s1">&#39;Content-Type: multipart/form-data&#39;</span> <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@document.docx <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@document2.docx <span class="se">\
-</span><span class="se"></span>    &gt; result.pdf
+</span><span class="se"></span>    -o result.pdf
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="office.basic.go" href="#office.basic.go">
@@ -596,11 +611,11 @@ See the <a href="#scalability">scalability section</a> to find how to mitigate t
 
 <pre class="chroma"><span class="kn">import</span> <span class="s">&#34;github.com/thecodingmachine/gotenberg/pkg&#34;</span>
 
-<span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
+<span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">c</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">Client</span><span class="p">{</span><span class="nx">Hostname</span><span class="p">:</span> <span class="s">&#34;http://localhost:3000&#34;</span><span class="p">}</span>
-    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NewOfficeRequest</span><span class="p">([]</span><span class="kt">string</span><span class="p">{</span><span class="s">&#34;document.docx&#34;</span><span class="p">,</span> <span class="s">&#34;document2.docx&#34;</span><span class="p">})</span>
+    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nf">NewOfficeRequest</span><span class="p">([]</span><span class="kt">string</span><span class="p">{</span><span class="s">&#34;document.docx&#34;</span><span class="p">,</span> <span class="s">&#34;document2.docx&#34;</span><span class="p">})</span>
     <span class="nx">dest</span> <span class="o">:=</span> <span class="s">&#34;result.pdf&#34;</span>
-    <span class="nx">c</span><span class="p">.</span><span class="nx">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
+    <span class="nx">c</span><span class="p">.</span><span class="nf">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
 <span class="p">}</span>
 </pre>
 
@@ -608,19 +623,19 @@ See the <a href="#scalability">scalability section</a> to find how to mitigate t
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
 </a>PHP</h3>
 
-<pre class="chroma"><span class="x">use TheCodingMachine\Gotenberg\Client;
-</span><span class="x">use TheCodingMachine\Gotenberg\DocumentFactory;
-</span><span class="x">use TheCodingMachine\Gotenberg\OfficeRequest;
-</span><span class="x">
-</span><span class="x">$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
-</span><span class="x">$files = [
-</span><span class="x">    DocumentFactory::makeFromPath(&#39;document.docx&#39;, &#39;document.docx&#39;),
-</span><span class="x">    DocumentFactory::makeFromPath(&#39;document2.docx&#39;, &#39;document2.docx&#39;),
-</span><span class="x">];
-</span><span class="x">$request = new OfficeRequest($files);
-</span><span class="x">$dirPath = &#34;/foo&#34;;
-</span><span class="x">$filename = $client-&gt;store($request, $dirPath);
-</span><span class="x"></span></pre>
+<pre class="chroma">use TheCodingMachine\Gotenberg\Client;
+use TheCodingMachine\Gotenberg\DocumentFactory;
+use TheCodingMachine\Gotenberg\OfficeRequest;
+
+$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
+$files = [
+    DocumentFactory::makeFromPath(&#39;document.docx&#39;, &#39;document.docx&#39;),
+    DocumentFactory::makeFromPath(&#39;document2.docx&#39;, &#39;document2.docx&#39;),
+];
+$request = new OfficeRequest($files);
+$dirPath = &#34;/foo&#34;;
+$filename = $client-&gt;store($request, $dirPath);
+</pre>
 
 <h2 class="Heading"><a class="Anchor" aria-hidden="true" id="office.paper_size_and_orientation" href="#office.paper_size_and_orientation">
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
@@ -646,7 +661,7 @@ Also, you have to set both <code>paperWidth</code> and <code>paperHeight</code>.
 </span><span class="se"></span>    --form <span class="nv">paperWidth</span><span class="o">=</span><span class="m">8</span>.27 <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">paperHeight</span><span class="o">=</span><span class="m">11</span>.27 <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">landscape</span><span class="o">=</span><span class="nb">true</span> <span class="se">\
-</span><span class="se"></span>    &gt; result.pdf
+</span><span class="se"></span>    -o result.pdf
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="office.paper_size_and_orientation.go" href="#office.paper_size_and_orientation.go">
@@ -655,13 +670,13 @@ Also, you have to set both <code>paperWidth</code> and <code>paperHeight</code>.
 
 <pre class="chroma"><span class="kn">import</span> <span class="s">&#34;github.com/thecodingmachine/gotenberg/pkg&#34;</span>
 
-<span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
+<span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">c</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">Client</span><span class="p">{</span><span class="nx">Hostname</span><span class="p">:</span> <span class="s">&#34;http://localhost:3000&#34;</span><span class="p">}</span>
-    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NewOfficeRequest</span><span class="p">([]</span><span class="kt">string</span><span class="p">{</span><span class="s">&#34;document.docx&#34;</span><span class="p">})</span>
-    <span class="nx">req</span><span class="p">.</span><span class="nx">SetPaperSize</span><span class="p">(</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">A4</span><span class="p">)</span>
-    <span class="nx">req</span><span class="p">.</span><span class="nx">SetLandscape</span><span class="p">(</span><span class="kc">true</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nf">NewOfficeRequest</span><span class="p">([]</span><span class="kt">string</span><span class="p">{</span><span class="s">&#34;document.docx&#34;</span><span class="p">})</span>
+    <span class="nx">req</span><span class="p">.</span><span class="nf">SetPaperSize</span><span class="p">(</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">A4</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">.</span><span class="nf">SetLandscape</span><span class="p">(</span><span class="kc">true</span><span class="p">)</span>
     <span class="nx">dest</span> <span class="o">:=</span> <span class="s">&#34;result.pdf&#34;</span>
-    <span class="nx">c</span><span class="p">.</span><span class="nx">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
+    <span class="nx">c</span><span class="p">.</span><span class="nf">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
 <span class="p">}</span>
 </pre>
 
@@ -669,21 +684,20 @@ Also, you have to set both <code>paperWidth</code> and <code>paperHeight</code>.
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
 </a>PHP</h3>
 
-<pre class="chroma"><span class="x">use TheCodingMachine\Gotenberg\Client;
-</span><span class="x">use TheCodingMachine\Gotenberg\DocumentFactory;
-</span><span class="x">use TheCodingMachine\Gotenberg\OfficeRequest;
-</span><span class="x">
-</span><span class="x">$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
-</span><span class="x">$files = [
-</span><span class="x">    DocumentFactory::makeFromPath(&#39;document.docx&#39;, &#39;document.docx&#39;),
-</span><span class="x">];
-</span><span class="x">$request = new OfficeRequest($files);
-</span><span class="x">$request-&gt;setPaperSize(Request::A4);
-</span><span class="x">$request-&gt;setMargins(Request::NO_MARGINS);
-</span><span class="x">$request-&gt;setLandscape(true);
-</span><span class="x">$dirPath = &#34;/foo&#34;;
-</span><span class="x">$filename = $client-&gt;store($request, $dirPath);
-</span><span class="x"></span></pre>
+<pre class="chroma">use TheCodingMachine\Gotenberg\Client;
+use TheCodingMachine\Gotenberg\DocumentFactory;
+use TheCodingMachine\Gotenberg\OfficeRequest;
+
+$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
+$files = [
+    DocumentFactory::makeFromPath(&#39;document.docx&#39;, &#39;document.docx&#39;),
+];
+$request = new OfficeRequest($files);
+$request-&gt;setPaperSize(Request::A4);
+$request-&gt;setLandscape(true);
+$dirPath = &#34;/foo&#34;;
+$filename = $client-&gt;store($request, $dirPath);
+</pre>
 
 <h2 class="Heading"><a class="Anchor" aria-hidden="true" id="office.fonts" href="#office.fonts">
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
@@ -696,7 +710,7 @@ Also, you have to set both <code>paperWidth</code> and <code>paperHeight</code>.
 <pre class="chroma"><span class="k">FROM</span><span class="s"> thecodingmachine/gotenberg:3</span><span class="err">
 </span><span class="err">
 </span><span class="err"></span><span class="k">RUN</span> apt-get -y install yourfonts<span class="err">
-</span><span class="err"></span></pre>
+</span></pre>
 
               </div>
             
@@ -724,7 +738,7 @@ will merge them and return the resulting PDF file.</p>
 </span><span class="se"></span>    --header <span class="s1">&#39;Content-Type: multipart/form-data&#39;</span> <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@file.pdf <span class="se">\
 </span><span class="se"></span>    --form <span class="nv">files</span><span class="o">=</span>@file2.pdf <span class="se">\
-</span><span class="se"></span>    &gt; result.pdf
+</span><span class="se"></span>    -o result.pdf
 </pre>
 
 <h3 class="Heading"><a class="Anchor" aria-hidden="true" id="merge.basic.go" href="#merge.basic.go">
@@ -733,11 +747,11 @@ will merge them and return the resulting PDF file.</p>
 
 <pre class="chroma"><span class="kn">import</span> <span class="s">&#34;github.com/thecodingmachine/gotenberg/pkg&#34;</span>
 
-<span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
+<span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">c</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">Client</span><span class="p">{</span><span class="nx">Hostname</span><span class="p">:</span> <span class="s">&#34;http://localhost:3000&#34;</span><span class="p">}</span>
-    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nx">NewMergeRequest</span><span class="p">([]</span><span class="kt">string</span><span class="p">{</span><span class="s">&#34;file.pdf&#34;</span><span class="p">,</span> <span class="s">&#34;file2.pdf&#34;</span><span class="p">})</span>
+    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nf">NewMergeRequest</span><span class="p">([]</span><span class="kt">string</span><span class="p">{</span><span class="s">&#34;file.pdf&#34;</span><span class="p">,</span> <span class="s">&#34;file2.pdf&#34;</span><span class="p">})</span>
     <span class="nx">dest</span> <span class="o">:=</span> <span class="s">&#34;result.pdf&#34;</span>
-    <span class="nx">c</span><span class="p">.</span><span class="nx">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
+    <span class="nx">c</span><span class="p">.</span><span class="nf">Store</span><span class="p">(</span><span class="nx">req</span><span class="p">,</span> <span class="nx">dest</span><span class="p">)</span>
 <span class="p">}</span>
 </pre>
 
@@ -745,19 +759,19 @@ will merge them and return the resulting PDF file.</p>
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
 </a>PHP</h3>
 
-<pre class="chroma"><span class="x">use TheCodingMachine\Gotenberg\Client;
-</span><span class="x">use TheCodingMachine\Gotenberg\DocumentFactory;
-</span><span class="x">use TheCodingMachine\Gotenberg\MergeRequest;
-</span><span class="x">
-</span><span class="x">$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
-</span><span class="x">$files = [
-</span><span class="x">    DocumentFactory::makeFromPath(&#39;file.pdf&#39;, &#39;file.pdf&#39;),
-</span><span class="x">    DocumentFactory::makeFromPath(&#39;file2.pdf&#39;, &#39;file2.pdf&#39;),
-</span><span class="x">];
-</span><span class="x">$request = new MergeRequest($files);
-</span><span class="x">$dirPath = &#34;/foo&#34;;
-</span><span class="x">$filename = $client-&gt;store($request, $dirPath);
-</span><span class="x"></span></pre>
+<pre class="chroma">use TheCodingMachine\Gotenberg\Client;
+use TheCodingMachine\Gotenberg\DocumentFactory;
+use TheCodingMachine\Gotenberg\MergeRequest;
+
+$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
+$files = [
+    DocumentFactory::makeFromPath(&#39;file.pdf&#39;, &#39;file.pdf&#39;),
+    DocumentFactory::makeFromPath(&#39;file2.pdf&#39;, &#39;file2.pdf&#39;),
+];
+$request = new MergeRequest($files);
+$dirPath = &#34;/foo&#34;;
+$filename = $client-&gt;store($request, $dirPath);
+</pre>
 
               </div>
             
@@ -793,16 +807,12 @@ to given URL.</p>
 
 <pre class="chroma"><span class="kn">import</span> <span class="s">&#34;github.com/thecodingmachine/gotenberg/pkg&#34;</span>
 
-<span class="kd">func</span> <span class="nx">main</span><span class="p">()</span> <span class="p">{</span>
+<span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">c</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">Client</span><span class="p">{</span><span class="nx">Hostname</span><span class="p">:</span> <span class="s">&#34;http://localhost:3000&#34;</span><span class="p">}</span>
-    <span class="nx">req</span> <span class="o">:=</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">HTMLRequest</span><span class="p">{</span>
-        <span class="nx">IndexFilePath</span><span class="p">:</span> <span class="s">&#34;index.html&#34;</span><span class="p">,</span>
-        <span class="nx">Options</span><span class="p">:</span> <span class="o">&amp;</span><span class="nx">gotenberg</span><span class="p">.</span><span class="nx">HTMLOptions</span><span class="p">{</span>
-            <span class="nx">WebHookURL</span><span class="p">:</span> <span class="s">&#34;http://myapp.com/webhook/&#34;</span><span class="p">,</span>
-        <span class="p">},</span>
-    <span class="p">}</span>
+    <span class="nx">req</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">gotenberg</span><span class="p">.</span><span class="nf">NewHTMLRequest</span><span class="p">(</span><span class="s">&#34;index.html&#34;</span><span class="p">)</span>
+    <span class="nx">req</span><span class="p">.</span><span class="nf">SetWebhookURL</span><span class="p">(</span><span class="s">&#34;http://myapp.com/webhook/&#34;</span><span class="p">)</span>
     <span class="nx">dest</span> <span class="o">:=</span> <span class="s">&#34;result.pdf&#34;</span>
-    <span class="nx">resp</span><span class="p">,</span> <span class="nx">err</span> <span class="o">:=</span> <span class="nx">c</span><span class="p">.</span><span class="nx">Post</span><span class="p">(</span><span class="nx">req</span><span class="p">)</span>
+    <span class="nx">resp</span><span class="p">,</span> <span class="nx">_</span> <span class="o">:=</span> <span class="nx">c</span><span class="p">.</span><span class="nf">Post</span><span class="p">(</span><span class="nx">req</span><span class="p">)</span>
 <span class="p">}</span>
 </pre>
 
@@ -810,16 +820,16 @@ to given URL.</p>
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
 </a>PHP</h3>
 
-<pre class="chroma"><span class="x">use TheCodingMachine\Gotenberg\Client;
-</span><span class="x">use TheCodingMachine\Gotenberg\DocumentFactory;
-</span><span class="x">use TheCodingMachine\Gotenberg\HTMLRequest;
-</span><span class="x">
-</span><span class="x">$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
-</span><span class="x">$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
-</span><span class="x">$request = new HTMLRequest($index);
-</span><span class="x">$request-&gt;setWebhookURL(&#39;http://myapp.com/webhook/&#39;);
-</span><span class="x">$resp = $client-&gt;post($request);
-</span><span class="x"></span></pre>
+<pre class="chroma">use TheCodingMachine\Gotenberg\Client;
+use TheCodingMachine\Gotenberg\DocumentFactory;
+use TheCodingMachine\Gotenberg\HTMLRequest;
+
+$client = new Client(&#39;http://localhost:3000&#39;, new \Http\Adapter\Guzzle6\Client());
+$index = DocumentFactory::makeFromPath(&#39;index.html&#39;, &#39;index.html&#39;);
+$request = new HTMLRequest($index);
+$request-&gt;setWebhookURL(&#39;http://myapp.com/webhook/&#39;);
+$resp = $client-&gt;post($request);
+</pre>
 
               </div>
             
@@ -839,7 +849,7 @@ to given URL.</p>
 </span><span class="w">
 </span><span class="w">  </span>gotenberg<span class="p">:</span><span class="w">
 </span><span class="w">    </span>image<span class="p">:</span><span class="w"> </span>thecodingmachine/gotenberg<span class="p">:</span><span class="m">3</span><span class="w">
-</span><span class="w"></span></pre>
+</span></pre>
 
 <p>You may now launch your services using:</p>
 
@@ -851,6 +861,22 @@ redirect a request to a Gotenberg container according to the round-robin strateg
 
               </div>
             
+              <div class="Page" id="liveness">
+                <h1 class="Heading"><a class="Anchor" aria-hidden="true" id="liveness" href="#liveness">
+	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>
+</a>Liveness</h1>
+                <p>Gotenberg provides the endpoint <code>/ping</code> for checking the API availability with
+a simple <code>GET</code> request.</p>
+
+<p>This feature is especially useful for liveness/readiness probes in Kubernetes:</p>
+
+<ul>
+<li><a href="https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#container-probes">Pod lifecycle</a></li>
+<li><a href="https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/">Configure Liveness and Readiness Probes</a></li>
+</ul>
+
+              </div>
+            
               <div class="Page" id="links">
                 <h1 class="Heading"><a class="Anchor" aria-hidden="true" id="links" href="#links">
 	<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg>

docs/theme/gotenberg/views/index.html

@@ -5,8 +5,19 @@
     <meta http-equiv="x-ua-compatible" content="ie=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>{{.Title}} &#183; {{.Subtitle}}</title>
+    <link rel="apple-touch-icon-precomposed" sizes="57x57" href="theme/gotenberg/img/apple-touch-icon-57x57.png" />
+    <link rel="apple-touch-icon-precomposed" sizes="114x114" href="theme/gotenberg/img/apple-touch-icon-114x114.png" />
+    <link rel="apple-touch-icon-precomposed" sizes="72x72" href="theme/gotenberg/img/apple-touch-icon-72x72.png" />
+    <link rel="apple-touch-icon-precomposed" sizes="144x144" href="theme/gotenberg/img/apple-touch-icon-144x144.png" />
+    <link rel="apple-touch-icon-precomposed" sizes="60x60" href="theme/gotenberg/img/apple-touch-icon-60x60.png" />
+    <link rel="apple-touch-icon-precomposed" sizes="120x120" href="theme/gotenberg/img/apple-touch-icon-120x120.png" />
+    <link rel="apple-touch-icon-precomposed" sizes="76x76" href="theme/gotenberg/img/apple-touch-icon-76x76.png" />
+    <link rel="apple-touch-icon-precomposed" sizes="152x152" href="theme/gotenberg/img/apple-touch-icon-152x152.png" />
+    <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-196x196.png" sizes="196x196" />
+    <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-96x96.png" sizes="96x96" />
     <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-32x32.png" sizes="32x32" />
-  <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-16x16.png" sizes="16x16" />
+    <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-16x16.png" sizes="16x16" />
+    <link rel="icon" type="image/png" href="theme/gotenberg/img/favicon-128.png" sizes="128x128" />
     <link rel="stylesheet" href="theme/gotenberg/css/index.css">
   </head>
   <body>
@@ -14,7 +25,7 @@
       <div class="Container">
         <div class="Header">
           <div class="Title center">
-            <img src="https://user-images.githubusercontent.com/8983173/49701110-4c8b9280-fbe8-11e8-895c-a4b9c7d2515b.png" alt="Gotenberg logo" width="250" height="250" />
+            <img src="https://user-images.githubusercontent.com/8983173/50009948-84b01e00-ffb8-11e8-850b-fc240382c626.png" alt="Gotenberg logo" width="250" height="250" />
             <span class="text">{{.Title}}</span>
             <span class="subtext">{{.Subtitle}}</span>
           </div>

internal/app/api/api.go

@@ -67,6 +67,7 @@ func setup() *echo.Echo {
 			return nil
 		}
 	})
+	e.GET("/ping", func(c echo.Context) error { return nil })
 	e.POST("/merge", merge)
 	g := e.Group("/convert")
 	g.POST("/html", convertHTML)
@@ -87,14 +88,15 @@ func newContext(r *resource) (context.Context, context.CancelFunc) {
 func print(c echo.Context, p printer.Printer, r *resource) error {
 	baseFilename, err := rand.Get()
 	if err != nil {
-		return fmt.Errorf("getting result file name: %v", err)
+		return hijackErr(fmt.Errorf("getting result file name: %v", err), r)
 	}
 	filename := fmt.Sprintf("%s.pdf", baseFilename)
 	fpath := fmt.Sprintf("%s/%s", r.dirPath, filename)
 	if r.webhookURL() == "" {
+		defer r.removeAll()
 		// if no webhook URL given, run conversion
 		// and directly return the resulting PDF file
-		// or and error.
+		// or an error.
 		if err := p.Print(fpath); err != nil {
 			return err
 		}
@@ -104,6 +106,7 @@ func print(c echo.Context, p printer.Printer, r *resource) error {
 	// run the following lines in a goroutine so that
 	// it doesn't block.
 	go func() {
+		defer r.removeAll()
 		if err := p.Print(fpath); err != nil {
 			c.Logger().Errorf("%v", err)
 			return
@@ -123,3 +126,10 @@ func print(c echo.Context, p printer.Printer, r *resource) error {
 	}()
 	return nil
 }
+
+func hijackErr(err error, r *resource) error {
+	if r != nil {
+		defer r.removeAll()
+	}
+	return err
+}

internal/app/api/api_test.go

@@ -0,0 +1,18 @@
+package api
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/labstack/echo"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPing(t *testing.T) {
+	req := httptest.NewRequest(http.MethodGet, "/ping", nil)
+	rec := httptest.NewRecorder()
+	e := echo.New()
+	_ = e.NewContext(req, rec)
+	assert.Equal(t, http.StatusOK, rec.Code)
+}

internal/app/api/html.go

@@ -8,9 +8,8 @@ import (
 func convertHTML(c echo.Context) error {
 	r, err := newResource(c)
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
-	defer r.removeAll()
 	ctx, cancel := newContext(r)
 	if cancel != nil {
 		defer cancel()
@@ -18,26 +17,26 @@ func convertHTML(c echo.Context) error {
 	p := &printer.HTML{Context: ctx}
 	indexPath, err := r.filePath("index.html")
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p.WithLocalURL(indexPath)
 	headerPath, _ := r.filePath("header.html")
 	if err := p.WithHeaderFile(headerPath); err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	footerPath, _ := r.filePath("footer.html")
 	if err := p.WithFooterFile(footerPath); err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	paperSize, err := r.paperSize()
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p.PaperWidth = paperSize[0]
 	p.PaperHeight = paperSize[1]
 	paperMargins, err := r.paperMargins()
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p.MarginTop = paperMargins[0]
 	p.MarginBottom = paperMargins[1]
@@ -45,7 +44,7 @@ func convertHTML(c echo.Context) error {
 	p.MarginRight = paperMargins[3]
 	landscape, err := r.landscape()
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p.Landscape = landscape
 	return print(c, p, r)

internal/app/api/markdown.go

@@ -8,35 +8,34 @@ import (
 func convertMarkdown(c echo.Context) error {
 	r, err := newResource(c)
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
-	defer r.removeAll()
 	ctx, cancel := newContext(r)
 	if cancel != nil {
 		defer cancel()
 	}
 	indexPath, err := r.filePath("index.html")
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p := &printer.Markdown{Context: ctx, TemplatePath: indexPath}
 	headerPath, _ := r.filePath("header.html")
 	if err := p.WithHeaderFile(headerPath); err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	footerPath, _ := r.filePath("footer.html")
 	if err := p.WithFooterFile(footerPath); err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	paperSize, err := r.paperSize()
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p.PaperWidth = paperSize[0]
 	p.PaperHeight = paperSize[1]
 	paperMargins, err := r.paperMargins()
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p.MarginTop = paperMargins[0]
 	p.MarginBottom = paperMargins[1]
@@ -44,7 +43,7 @@ func convertMarkdown(c echo.Context) error {
 	p.MarginRight = paperMargins[3]
 	landscape, err := r.landscape()
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p.Landscape = landscape
 	return print(c, p, r)

internal/app/api/merge.go

@@ -1,6 +1,7 @@
 package api
 
 import (
+	"errors"
 	"fmt"
 	"net/http"
 	"os"
@@ -13,23 +14,26 @@ import (
 func merge(c echo.Context) error {
 	r, err := newResource(c)
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
-	defer r.removeAll()
 	fpaths, err := r.filePaths([]string{".pdf"})
 	if err != nil {
-		return err
+		return hijackErr(err, r)
+	}
+	if len(fpaths) == 0 {
+		return hijackErr(errors.New("no suitable PDF files to merge"), r)
 	}
 	baseFilename, err := rand.Get()
 	if err != nil {
-		return fmt.Errorf("getting result file name: %v", err)
+		return hijackErr(fmt.Errorf("getting result file name: %v", err), r)
 	}
 	filename := fmt.Sprintf("%s.pdf", baseFilename)
 	fpath := fmt.Sprintf("%s/%s", r.dirPath, filename)
 	if r.webhookURL() == "" {
+		defer r.removeAll()
 		// if no webhook URL given, run merge
 		// and directly return the resulting PDF file
-		// or and error.
+		// or an error.
 		if err := printer.Merge(fpaths, fpath); err != nil {
 			return err
 		}
@@ -39,6 +43,7 @@ func merge(c echo.Context) error {
 	// run the following lines in a goroutine so that
 	// it doesn't block.
 	go func() {
+		defer r.removeAll()
 		if err := printer.Merge(fpaths, fpath); err != nil {
 			c.Logger().Errorf("%v", err)
 			return

internal/app/api/office.go

@@ -24,30 +24,29 @@ var officeExts = []string{
 func convertOffice(c echo.Context) error {
 	r, err := newResource(c)
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
-	defer r.removeAll()
 	ctx, cancel := newContext(r)
 	if cancel != nil {
 		defer cancel()
 	}
 	fpaths, err := r.filePaths(officeExts)
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	if len(fpaths) == 0 {
-		return errors.New("no suitable office documents to convert")
+		return hijackErr(errors.New("no suitable office documents to convert"), r)
 	}
 	p := &printer.Office{Context: ctx, FilePaths: fpaths}
 	paperSize, err := r.paperSize()
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p.PaperWidth = paperSize[0]
 	p.PaperHeight = paperSize[1]
 	landscape, err := r.landscape()
 	if err != nil {
-		return err
+		return hijackErr(err, r)
 	}
 	p.Landscape = landscape
 	return print(c, p, r)

internal/app/api/resource.go

@@ -49,17 +49,17 @@ func newResource(c echo.Context) (*resource, error) {
 	r := &resource{values: v, dirPath: dirPath}
 	form, err := c.MultipartForm()
 	if err != nil {
-		return nil, fmt.Errorf("getting multipart form: %v", err)
+		return r, fmt.Errorf("getting multipart form: %v", err)
 	}
 	for _, files := range form.File {
 		for _, fh := range files {
 			in, err := fh.Open()
 			if err != nil {
-				return nil, fmt.Errorf("%s: opening file: %v", fh.Filename, err)
+				return r, fmt.Errorf("%s: opening file: %v", fh.Filename, err)
 			}
 			defer in.Close()
 			if err := r.writeFile(fh.Filename, in); err != nil {
-				return nil, err
+				return r, err
 			}
 		}
 	}

internal/pkg/printer/doc.go

@@ -1,52 +1,7 @@
 /*
 Package printer contains structs which convert
-a specific file type to PDF:
+a specific file type to PDF.
 
- // converting HTML to PDF.
- p := &printer.HTML{
-	 Context: context.Background(),
-	 PaperWidth: 8.27,
-	 PaperHeight: 11.7,
-	 Landscape: false,
- }
- p.WithLocalURL("index.html")
- if err := p.Print("result.pdf"); err != nil {
-	 return err
- }
-
- // converting Markdown to PDF:
- // it assumes here that our template "index.html"
- // will call toHTML method to convert
- // markdown files to HTML.
- p := &printer.Markdown{
-	 Context: context.Background(),
-	 TemplatePath: "index.html",
-	 PaperWidth: 8.27,
-	 PaperHeight: 11.7,
-	 Landscape: false,
- }
- if err := p.Print("result.pdf"); err != nil {
-	 return err
- }
-
- // converting Office documents to PDF:
- // it converts each files independently and
- // then merge them.
- //
- // Also, as unoconv cannot perform
- // concurrent conversions, a lock is applied.
- p := &printer.Office{
-	 Context: ctx,
-	 FilePaths: []string{"document.docx", "presentation.pptx"}
- }
- if err := p.Print("result.pdf"); err != nil {
-	 return err
- }
-
-It is also able to merge a list of PDF files:
-
- if err := printer.Merge([]string{"foo.pdf", "bar.pdf"}, "result.pdf"); err != nil {
-	 return err
- }
+It is also able to merge a list of PDF files.
 */
 package printer

internal/pkg/printer/printer.go

@@ -3,6 +3,7 @@ package printer
 import (
 	"fmt"
 	"io/ioutil"
+	"os/exec"
 
 	pdfcpuAPI "github.com/hhrutter/pdfcpu/pkg/api"
 	pdfcpuLog "github.com/hhrutter/pdfcpu/pkg/log"
@@ -23,9 +24,18 @@ type Printer interface {
 
 // Merge merges PDF files.
 func Merge(fpaths []string, destination string) error {
-	cmd := pdfcpuAPI.MergeCommand(fpaths, destination, pdfcpuConfig.NewDefaultConfiguration())
-	_, err := pdfcpuAPI.Merge(cmd)
-	return err
+	cmdcpu := pdfcpuAPI.MergeCommand(fpaths, destination, pdfcpuConfig.NewDefaultConfiguration())
+	_, err := pdfcpuAPI.Merge(cmdcpu)
+	if err == nil {
+		return nil
+	}
+	// if pdfcpu failed to merge PDF files...
+	// https://github.com/thecodingmachine/gotenberg/issues/29
+	var cmdArgs []string
+	cmdArgs = append(cmdArgs, fpaths...)
+	cmdArgs = append(cmdArgs, "cat", "output", destination)
+	cmd := exec.Command("pdftk", cmdArgs...)
+	return cmd.Run()
 }
 
 func writeBytesToFile(dst string, b []byte) error {

pkg/README.md

@@ -24,8 +24,8 @@ func main() {
         "img.gif",
         "style.css",
     })
-    req.SetPaperSize(A4)
-    req.SetMargins(NormalMargins)
+    req.SetPaperSize(gotenberg.A4)
+    req.SetMargins(gotenberg.NormalMargins)
     req.SetLandscape(false)
     dest := "foo.pdf"
     c.Store(req, dest)

pkg/html_test.go

@@ -37,3 +37,11 @@ func TestHTML(t *testing.T) {
 	err = os.RemoveAll(dirPath)
 	assert.Nil(t, err)
 }
+
+func TestConcurrentHTML(t *testing.T) {
+	for i := 0; i < 10; i++ {
+		go func() {
+			TestHTML(t)
+		}()
+	}
+}

pkg/markdown_test.go

@@ -44,3 +44,11 @@ func TestMarkdown(t *testing.T) {
 	err = os.RemoveAll(dirPath)
 	assert.Nil(t, err)
 }
+
+func TestConcurrentMarkdown(t *testing.T) {
+	for i := 0; i < 10; i++ {
+		go func() {
+			TestMarkdown(t)
+		}()
+	}
+}

pkg/merge_test.go

@@ -27,3 +27,11 @@ func TestMerge(t *testing.T) {
 	err = os.RemoveAll(dirPath)
 	assert.Nil(t, err)
 }
+
+func TestConcurrentMerge(t *testing.T) {
+	for i := 0; i < 10; i++ {
+		go func() {
+			TestMerge(t)
+		}()
+	}
+}

pkg/office_test.go

@@ -28,3 +28,11 @@ func TestOffice(t *testing.T) {
 	err = os.RemoveAll(dirPath)
 	assert.Nil(t, err)
 }
+
+func TestConcurrentOffice(t *testing.T) {
+	for i := 0; i < 10; i++ {
+		go func() {
+			TestOffice(t)
+		}()
+	}
+}

scripts/publish.sh

@@ -2,10 +2,10 @@
 
 set -e
 
-GOLANG_VERSION=1.11.2
-VERSION="$1"
-DOCKER_USER="$2"
-DOCKER_PASSWORD="$3"
+GOLANG_VERSION="$1"
+VERSION="$2"
+DOCKER_USER="$3"
+DOCKER_PASSWORD="$4"
 
 docker login -u "$DOCKER_USER" -p "$DOCKER_PASSWORD"