Version: 8.x

Routes

Most routes within Gotenberg are designed to accept multipart/form-data requests and generate one or more PDF files. This guide will assist you in understanding their usage.

Convert with Chromium

The next routes leverage the capabilities of the Chromium browser to effectively transform a diverse range of HTML documents into PDFs.

Checkout the Chromium module configuration to tailor the Chromium behavior to your needs.

URL into PDF route

This multipart/form-data route converts a web page into PDF.

POST /forms/chromium/convert/url

It accepts the following specific form field:

Key	Description
url	URL of the page you want to convert into PDF.	required

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
-o my.pdf

200 OK
400 Bad Request
403 Forbidden
503 Service Unavailable

Content-Disposition: attachement; filename={output-filename.pdf}
Content-Type: {content-type}
Content-Length: {content-length}
Gotenberg-Trace: {trace}
Body: {output-file}

See the Request Tracing section for more information about the Gotenberg-Trace header.
See the Output Filename section for more information about the Gotenberg-Output-Filename header.

This errors happens if one ore more form fields are invalid.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: {error}

This error happens when the given URL is not authorized.

See the Chromium module configuration for more details.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: '{url}' does not match the authorized URLs

If a request doesn't complete within a specified duration, the API will respond with a 503 Service Unavailable status.

See the API module configuration for more details.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: Service Unavailable

HTML file into PDF route

This multipart/form-data route converts an HTML file into PDF.

POST /forms/chromium/convert/html

It accepts the following specific form file:

Key	Description
index.html	The HTML file to convert into PDF.	required

For instance:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <title>My PDF</title>
  </head>
  <body>
    <h1>Hello world!</h1>
  </body>
</html>

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/html \
--form files=@/path/to/index.html \
-o my.pdf

200 OK
400 Bad Request
503 Service Unavailable

Content-Disposition: attachement; filename={output-filename.pdf}
Content-Type: {content-type}
Content-Length: {content-length}
Gotenberg-Trace: {trace}
Body: {output-file}

See the Request Tracing section for more information about the Gotenberg-Trace header.
See the Output Filename section for more information about the Gotenberg-Output-Filename header.

This errors happens if one ore more form fields are invalid.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: {error}

If a request doesn't complete within a specified duration, the API will respond with a 503 Service Unavailable status.

See the API module configuration for more details.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: Service Unavailable

You may also send additional files, like images, fonts, stylesheets, and so on.

The only requirement is that their paths in the index.html file are on the root level.

For instance, this will work:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <title>My PDF</title>
  </head>
  <body>
    <h1>Hello world!</h1>
    <img src="img.png" />
  </body>
</html>

But this won't:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <title>My PDF</title>
  </head>
  <body>
    <h1>Hello world!</h1>
    <img src="/foo/img.png" />
  </body>
</html>

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/html \
--form files=@/path/to/index.html \
--form files=@/path/to/img.png \
-o my.pdf

info

Remote paths for images, fonts (e.g., Google Fonts), etc., work too.

Markdown file(s) into PDF route

This multipart/form-data route converts Markdown file(s) into PDF.

POST /forms/chromium/convert/markdown

It accepts the following specific form files:

Key	Description
index.html	The HTML file that wraps the markdown content.	required
*.md	At least one markdown file.	required

It works like the HTML route but with access to a Go template function toHTML. This function converts a markdown file's content into HTML.

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>My PDF</title>
  </head>
  <body>
    {{ toHTML "file.md" }}
  </body>
</html>

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/markdown \
--form files=@/path/to/index.html \
--form files=@/path/to/file.md \
-o my.pdf

200 OK
400 Bad Request
503 Service Unavailable

Content-Disposition: attachement; filename={output-filename.pdf}
Content-Type: {content-type}
Content-Length: {content-length}
Gotenberg-Trace: {trace}
Body: {output-file}

See the Request Tracing section for more information about the Gotenberg-Trace header.
See the Output Filename section for more information about the Gotenberg-Output-Filename header.

This errors happens if one ore more form fields are invalid.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: {error}

If a request doesn't complete within a specified duration, the API will respond with a 503 Service Unavailable status.

See the API module configuration for more details.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: Service Unavailable

Page Properties

Each route accepts the following form fields:

Key	Description	Default
singlePage	Define whether to print the entire content in one single page.	false
paperWidth	Specify paper width using units like 72pt, 96px, 1in, 25.4mm, 2.54cm, or 6pc. Default unit is inches if unspecified.	8.5
paperHeight	Specify paper height using units like 72pt, 96px, 1in, 25.4mm, 2.54cm, or 6pc. Default unit is inches if unspecified.	11
marginTop	Specify top margin width using units like 72pt, 96px, 1in, 25.4mm, 2.54cm, or 6pc. Default unit is inches if unspecified.	0.39
marginBottom	Specify bottom margin using units like 72pt, 96px, 1in, 25.4mm, 2.54cm, or 6pc. Default unit is inches if unspecified.	0.39
marginLeft	Specify left margin using units like 72pt, 96px, 1in, 25.4mm, 2.54cm, or 6pc. Default unit is inches if unspecified.	0.39
marginRight	Specify right margin using units like 72pt, 96px, 1in, 25.4mm, 2.54cm, or 6pc. Default unit is inches if unspecified.	0.39
preferCssPageSize	Define whether to prefer page size as defined by CSS.	false
printBackground	Print the background graphics.	false
omitBackground	Hide the default white background and allow generating PDFs with transparency.	false
landscape	Set the paper orientation to landscape.	false
scale	The scale of the page rendering.	1.0
nativePageRanges	Page ranges to print, e.g., '1-5, 8, 11-13' - empty means all pages.	All pages

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
--form paperWidth=8.27 \
--form paperHeight=11.7 \
--form marginTop=1 \
--form marginBottom=1 \
--form marginLeft=1 \
--form marginRight=1 \
--form preferCssPageSize=false \
--form printBackground=true \
--form omitBackground=true \
--form landscape=true \
--form scale=2.0 \
--form nativePageRanges=1-5 \
-o my.pdf

info

If the singlePage form field is set to true, it automatically overrides the values from the paperHeight and nativePageRanges form fields.

info

Examples of paper size (width x height):

Letter - 8.5 x 11 (default)
Legal - 8.5 x 14
Tabloid - 11 x 17
Ledger - 17 x 11
A0 - 33.1 x 46.8
A1 - 23.4 x 33.1
A2 - 16.54 x 23.4
A3 - 11.7 x 16.54
A4 - 8.27 x 11.7
A5 - 5.83 x 8.27
A6 - 4.13 x 5.83

info

The rules regarding the printBackground and omitBackground form fields are the following:

If printBackground is set to false, no background is printed.
If printBackground is set to true:
- If the HTML document has a background, that background is used.
- If not:
  - If omitBackground is set to true, the default background is transparent.
  - If not, the default white background is used.

Header & Footer

Each route accepts the following form files:

Key	Description	Default
header.html	HTML file containing the header.	None
footer.html	HTML file containing the footer.	None

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
--form files=@/path/to/header.html \
--form files=@/path/to/footer.html \
-o my.pdf

Each of them has to be a complete HTML document:

<html>
<head>
    <style>
    body {
        font-size: 12px;
        margin: auto 20px;
    }
    </style>
</head>
<body>
<p><span class="pageNumber"></span> of <span class="totalPages"></span></p>
</body>
</html>

info

The following classes allow you to inject printing values:

date - formatted print date.
title - document title.
url - document location.
pageNumber - current page number.
totalPages - total pages in the document.

caution

There are some limitations:

No JavaScript.
The CSS properties are independent of the ones from the HTML document.
footer.html CSS properties override the ones from header.html.
Only fonts installed in the Docker image are loaded - see the fonts configuration section.
Images only work using a base64 encoded source - i.e., data:image/png;base64, iVBORw0K....
background-color and color CSS properties require an additional -webkit-print-color-adjust: exact CSS property in order to work.
Assets are not loaded (i.e., CSS files, scripts, fonts, etc.).
Background form fields do not apply.

Wait Before Rendering

Each route accepts the following form fields:

Key	Description	Default
waitDelay	Duration (e.g, '5s') to wait when loading an HTML document before converting it into PDF.	None
waitForExpression	The JavaScript expression to wait before converting an HTML document into PDF until it returns true.	None

info

These form fields do not work if JavaScript is disabled via --chromium-disable-javascript.

See the Chromium module configuration for more details.

waitDelay

When the page relies on JavaScript for rendering, and you don't have access to the page's code, you may want to wait a certain amount of time to make sure Chromium has fully rendered the page you're trying to generate.

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
--form waitDelay=5s \
-o my.pdf

waitForExpression

A more reliable option than the previous form field:

// Somewhere in the HTML document.
var globalVar = 'notReady'
await promises()
window.globalVar = 'ready'

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
--form 'waitForExpression=window.status === '\''ready'\''' \
-o my.pdf

Emulated Media Type

Each route accepts the following form field:

Key	Description	Default
emulatedMediaType	The media type to emulate, either "screen" or "print" - empty means "print".	print

Some websites have dedicated CSS rules for print. Using "screen" allows you to force the "standard" CSS rules.

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
--form emulatedMediaType=screen \
-o my.pdf

Cookies

Each route accepts the following form field:

Key	Description	Default
cookies	Cookies to store in the Chromium cookie jar (JSON format).	None

info

Cookies are set to automatically expire after a specified duration, determined by the request time limit. Additionally, you have the option to clear cookies after each conversion.

For further details, refer to the API module configuration and the Chromium module configuration sections.

This form field is a JSON-formatted array with items accepting the following keys:

Key	Description	Default
name	Cookie name.	required
value	Cookie value.	required
domain	Cookie domain.	required
path	Cookie path.	None
secure	Set the cookie to secure if true.	None
httpOnly	Set the cookie as HTTP-only if true.	None
sameSite	Accepted values are "Strict", "Lax" or "None".	None (empty)

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
--form 'cookies=[{"name":"yummy_cookie","value":"choco","domain":"theyummycookie.com"}]' \
-o my.pdf

Custom HTTP Headers

Each route accepts the following form field:

Key	Description	Default
extraHttpHeaders	HTTP headers to send by Chromium while loading the HTML document (JSON format).	None

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
--form 'extraHttpHeaders={"X-Header":"value"}' \
-o my.pdf

Invalid HTTP Status Codes

Each route accepts the following form field:

Key	Description	Default
failOnHttpStatusCodes	Return a 409 Conflict response if the HTTP status code from the main page is not acceptable.	[499,599]

A X99 entry means every HTTP status codes between X00 and X99 (e.g., 499 means every HTTP status codes between 400 and 499).

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://httpstat.us/400 \
--form 'failOnHttpStatusCodes=[499]'

409 Conflict

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body:

Invalid HTTP status code from the main page: 400: Bad Request

Console Exceptions

Each route accepts the following form field:

Key	Description	Default
failOnConsoleExceptions	Return a 409 Conflict response if there are exceptions in the Chromium console.	false

info

This form field does not work if JavaScript is disabled via --chromium-disable-javascript.

See the Chromium module configuration for more details.

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/html \
--form files=@/path/to/index.html \
--form failOnConsoleExceptions=true

409 Conflict

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body:

Chromium console exceptions:

exception "Uncaught" (17:10): Error: Exception 1
at file:///tmp/db09d2c8-31e3-4058-9923-c2705350f2b3/index.html:18:11;
exception "Uncaught" (20:10): Error: Exception 2
at file:///tmp/db09d2c8-31e3-4058-9923-c2705350f2b3/index.html:21:11:

Performance Mode

Each route accepts the following form field:

Key	Description	Default
skipNetworkIdleEvent	Do not wait for Chromium network to be idle.	false

Gotenberg, by default, waits for the network idle event to ensure that the majority of the page is rendered during conversion. However, this often significantly slows down the conversion process. Setting this form field to true can greatly enhance the conversion speed.

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/html \
--form files=@/path/to/index.html \
--form skipNetworkIdleEvent=true \
-o my.pdf

PDF/A & PDF/UA

Each route accepts the following form fields:

Key	Description	Default
pdfa	Convert the resulting PDF into the given PDF/A format.	None
pdfua	Enable PDF for Universal Access for optimal accessibility.	false

At present, the following PDF/A formats are available:

PDF/A-1b
PDF/A-2b
PDF/A-3b

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
--form pdfa=PDF/A-1b \
--form pdfua=true \
-o my.pdf

Metadata

Each route accepts the following form field:

Key	Description	Default
metadata	The metadata to write (JSON format).	None

info

Not all metadata are writable. Consider taking a look at https://exiftool.org/TagNames/XMP.html#pdf for an (exhaustive?) list of available metadata.

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--form url=https://my.url \
--form 'metadata={"Author":"Julien Neuhart","Copyright":"Julien Neuhart","CreationDate":"2006-09-18T16:27:50-04:00","Creator":"Gotenberg","Keywords":["first","second"],"Marked":true,"ModDate":"2006-09-18T16:27:50-04:00","PDFVersion":1.7,"Producer":"Gotenberg","Subject":"Sample","Title":"Sample","Trapped":"Unknown"}' \
-o my.pdf

Screenshots route

You can capture screenshots using the following three routes, which function similarly to their PDF equivalents:

POST /forms/chromium/screenshot/url

POST /forms/chromium/screenshot/html

POST /forms/chromium/screenshot/markdown

These routes accept the following form fields:

Key	Description	Default
width	The device screen width in pixels.	800
height	The device screen height in pixels.	600
clip	Define whether to clip the screenshot according to the device dimensions.	false
format	The image compression format, either "png", "jpeg" or "webp".	png
quality	The compression quality from range 0 to 100 (jpeg only).	100
omitBackground	Hide the default white background and allow generating screenshots with transparency.	false
optimizeForSpeed	Define whether to optimize image encoding for speed, not for resulting size.	false

The following features are also available:

Wait Before Rendering
Emulated Media Type
Cookies
Custom HTTP headers
Invalid HTTP Status Codes
Console Exceptions
Performance Mode

cURL

curl \
--request POST http://localhost:3000/forms/chromium/screenshot/html \
--form files=@/path/to/index.html \
--form format=jpeg \
--form quality=100 \
--form optimizeForSpeed=true \
-o my.jpeg

Convert with LibreOffice

The next route leverage the capabilities of LibreOffice to effectively transform a diverse range of Office documents (Word, Excel, PowerPoint, etc.) into PDFs.

Checkout the LibreOffice module configuration to tailor the LibreOffice behavior to your needs.

Office documents into PDFs route

This multipart/form-data route convert one or more Office documents into PDF.

POST /forms/libreoffice/convert

Currently, the following extensions are supported:

.123 .602 .abw .bib .bmp .cdr .cgm .cmx .csv .cwk .dbf .dif .doc .docm .docx .dot .dotm .dotx .dxf .emf .eps .epub .fodg .fodp .fods .fodt .fopd .gif .htm .html .hwp .jpeg .jpg .key .ltx .lwp .mcw .met .mml .mw .numbers .odd .odg .odm .odp .ods .odt .otg .oth .otp .ots .ott .pages .pbm .pcd .pct .pcx .pdb .pdf .pgm .png .pot .potm .potx .ppm .pps .ppt .pptm .pptx .psd .psw .pub .pwp .pxl .ras .rtf .sda .sdc .sdd .sdp .sdw .sgl .slk .smf .stc .std .sti .stw .svg .svm .swf .sxc .sxd .sxg .sxi .sxm .sxw .tga .tif .tiff .txt .uof .uop .uos .uot .vdx .vor .vsd .vsdm .vsdx .wb2 .wk1 .wks .wmf .wpd .wpg .wps .xbm .xhtml .xls .xlsb .xlsm .xlsx .xlt .xltm .xltx .xlw .xml .xpm .zabw

cURL

curl \
--request POST http://localhost:3000/forms/libreoffice/convert \
--form files=@/path/to/file.docx \
-o my.pdf

cURL

curl \
--request POST http://localhost:3000/forms/libreoffice/convert \
--form files=@/path/to/file.docx \
--form files=@/path/to/file.xlsx \
-o my.zip

200 OK
400 Bad Request
503 Service Unavailable

Content-Disposition: attachement; filename={output-filename.ext}
Content-Type: {content-type}
Content-Length: {content-length}
Gotenberg-Trace: {trace}
Body: {output-file}

See the Request Tracing section for more information about the Gotenberg-Trace header.
See the Output Filename section for more information about the Gotenberg-Output-Filename header.

This errors happens if one ore more form fields are invalid.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: {error}

If a request doesn't complete within a specified duration, the API will respond with a 503 Service Unavailable status.

See the API module configuration for more details.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: Service Unavailable

Page Properties

The route also accepts the following form fields:

Key	Description	Default
landscape	Set the paper orientation to landscape.	false
nativePageRanges	Page ranges to print, e.g., '1-4' - empty means all pages.	All pages
exportFormFields	Set whether to export the form fields or to use the inputted/selected content of the fields.	true
singlePageSheets	Set whether to render the entire spreadsheet as a single page.	false

info

If multiple files are provided, the page ranges will be applied independently to each file.

cURL

curl \
--request POST http://localhost:3000/forms/libreoffice/convert \
--form files=@/path/to/file.docx \
--form landscape=true \
--form nativePageRanges=1-5 \
--form exportFormFields=false \
-o my.pdf

cURL

curl \
--request POST http://localhost:3000/forms/libreoffice/convert \
--form files=@/path/to/file.xlsx \
--form singlePageSheets=true \
-o my.pdf

Merge

The route also accepts the following form fields:

Key	Description	Default
merge	Merge alphanumerically the resulting PDFs.	false

info

Alphanumerically means numbers first, then letters in alphabetical order.

cURL

curl \
--request POST http://localhost:3000/forms/libreoffice/convert \
--form files=@/path/to/file.docx \
--form files=@/path/to/file.xlsx \
--form merge=true \
-o my.pdf

PDF/A & PDF/UA

The route also accepts the following form fields:

Key	Description	Default
pdfa	Convert the resulting PDF into the given PDF/A format.	None
pdfua	Enable PDF for Universal Access for optimal accessibility.	false

At present, the following PDF/A formats are available:

PDF/A-1b
PDF/A-2b
PDF/A-3b

cURL

curl \
--request POST http://localhost:3000/forms/libreoffice/convert \
--form files=@/path/to/file.docx \
--form pdfa=PDF/A-1b \
--form pdfua=true \
-o my.pdf

Metadata

The route accepts the following form field:

Key	Description	Default
metadata	The metadata to write (JSON format).	None

info

Not all metadata are writable. Consider taking a look at https://exiftool.org/TagNames/XMP.html#pdf for an (exhaustive?) list of available metadata.

cURL

curl \
--request POST http://localhost:3000/forms/libreoffice/convert \
--form files=@/path/to/file.docx \
--form 'metadata={"Author":"Julien Neuhart","Copyright":"Julien Neuhart","CreationDate":"2006-09-18T16:27:50-04:00","Creator":"Gotenberg","Keywords":["first","second"],"Marked":true,"ModDate":"2006-09-18T16:27:50-04:00","PDFVersion":1.7,"Producer":"Gotenberg","Subject":"Sample","Title":"Sample","Trapped":"Unknown"}' \
-o my.pdf

Convert into PDF/A & PDF/UA route

This multipart/form-data route transform one or more PDF files into the requested PDF/A format and/or PDF/UA.

POST /forms/pdfengines/convert

It accepts the following form files and form fields:

Key	Description	Default
*.pdf	At least one PDF file.	required
pdfa	Convert the resulting PDF into the given PDF/A format.	None*
pdfua	Enable PDF for Universal Access for optimal accessibility.	false*

*Note that at least one of the form field must be provided.

At present, the following PDF/A formats are available:

PDF/A-1b
PDF/A-2b
PDF/A-3b

cURL

curl \
--request POST http://localhost:3000/forms/pdfengines/convert \
--form files=@/path/to/pdf.pdf \
--form pdfa=PDF/A-1b \
--form pdfua=true \
-o my.pdf

cURL

curl \
--request POST http://localhost:3000/forms/pdfengines/convert \
--form files=@/path/to/pdf1.pdf \
--form files=@/path/to/pdf2.pdf \
--form files=@/path/to/pdf3.pdf \
--form files=@/path/to/pdf4.pdf \
--form pdfa=PDF/A-1b \
--form pdfua=true \
-o my.zip

200 OK
400 Bad Request
503 Service Unavailable

Content-Disposition: attachement; filename={output-filename.ext}
Content-Type: {content-type}
Content-Length: {content-length}
Gotenberg-Trace: {trace}
Body: {output-file}

See the Request Tracing section for more information about the Gotenberg-Trace header.
See the Output Filename section for more information about the Gotenberg-Output-Filename header.

This errors happens if one ore more form fields are invalid.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: {error}

If a request doesn't complete within a specified duration, the API will respond with a 503 Service Unavailable status.

See the API module configuration for more details.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: Service Unavailable

Read PDF metadata route

This multipart/form-data route returns the metadata of one or more PDF files.

POST /forms/pdfengines/metadata/read

It accepts the following form files:

Key	Description	Default
*.pdf	At least one PDF file.	required

cURL

curl \
--request POST http://localhost:3000/forms/pdfengines/metadata/read \
--form files=@/path/to/file1.pdf \
--form files=@/path/to/file2.pdf

200 OK
400 Bad Request
503 Service Unavailable

Content-Type: application/json; charset=UTF-8
Content-Length: {content-length}
Gotenberg-Trace: {trace}
Body:

{
    "file1.pdf": {
        "CreateDate": "2024:03:05 09:15:32Z",
        "Creator": "Writer",
        "TaggedPDF": "Yes",
        "XMPToolkit": "Image::ExifTool 12.57"
        // ...
    },
    "file2.pdf": {
        "CreateDate": "2024:03:05 09:15:32Z",
        "Creator": "Writer",
        "TaggedPDF": "Yes",
        "XMPToolkit": "Image::ExifTool 12.57"
        // ...
    }
}

See the Request Tracing section for more information about the Gotenberg-Trace header.

This errors happens if one ore more form fields are invalid.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: {error}

If a request doesn't complete within a specified duration, the API will respond with a 503 Service Unavailable status.

See the API module configuration for more details.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: Service Unavailable

Write PDF metadata route

This multipart/form-data route accepts one or more PDF files and writes/overrides their metadata.

POST /forms/pdfengines/metadata/write

It accepts the following form files and form field:

Key	Description	Default
*.pdf	At least one PDF file.	required
metadata	The metadata to write (JSON format).	required

info

Not all metadata are writable. Consider taking a look at https://exiftool.org/TagNames/XMP.html#pdf for an (exhaustive?) list of available metadata.

cURL

curl \
--request POST http://localhost:3000/forms/pdfengines/metadata/write \
--form files=@/path/to/file.pdf \
--form 'metadata={"Author":"Julien Neuhart","Copyright":"Julien Neuhart","CreationDate":"2006-09-18T16:27:50-04:00","Creator":"Gotenberg","Keywords":["first","second"],"Marked":true,"ModDate":"2006-09-18T16:27:50-04:00","PDFVersion":1.7,"Producer":"Gotenberg","Subject":"Sample","Title":"Sample","Trapped":"Unknown"}' \
-o my.pdf

cURL

curl \
--request POST http://localhost:3000/forms/pdfengines/metadata/write \
--form files=@/path/to/file1.pdf \
--form files=@/path/to/file2.pdf \
--form 'metadata={"Author":"Julien Neuhart","Copyright":"Julien Neuhart","CreationDate":"2006-09-18T16:27:50-04:00","Creator":"Gotenberg","Keywords":["first","second"],"Marked":true,"ModDate":"2006-09-18T16:27:50-04:00","PDFVersion":1.7,"Producer":"Gotenberg","Subject":"Sample","Title":"Sample","Trapped":"Unknown"}' \
-o my.zip

200 OK
400 Bad Request
503 Service Unavailable

Content-Disposition: attachement; filename={output-filename.ext}
Content-Type: {content-type}
Content-Length: {content-length}
Gotenberg-Trace: {trace}
Body: {output-file}

See the Request Tracing section for more information about the Gotenberg-Trace header.
See the Output Filename section for more information about the Gotenberg-Output-Filename header.

This errors happens if one ore more form fields are invalid.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: {error}

If a request doesn't complete within a specified duration, the API will respond with a 503 Service Unavailable status.

See the API module configuration for more details.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: Service Unavailable

Merge PDFs route

This multipart/form-data route accepts PDF files and merges them alphanumerically.

info

Alphanumerically means numbers first, then letters in alphabetical order.

POST /forms/pdfengines/merge

Key	Description	Default
*.pdf	PDF files.	required
pdfa	Convert the resulting PDF into the given PDF/A format.	None
pdfua	Enable PDF for Universal Access for optimal accessibility.	false
metadata	The metadata to write (JSON format).	None

cURL

curl \
--request POST http://localhost:3000/forms/pdfengines/merge \
--form files=@/path/to/pdf1.pdf \
--form files=@/path/to/pdf2.pdf \
--form files=@/path/to/pdf3.pdf \
--form files=@/path/to/pdf4.pdf \
-o my.pdf

200 OK
400 Bad Request
503 Service Unavailable

Content-Disposition: attachement; filename={output-filename.pdf}
Content-Type: {content-type}
Content-Length: {content-length}
Gotenberg-Trace: {trace}
Body: {output-file}

See the Request Tracing section for more information about the Gotenberg-Trace header.
See the Output Filename section for more information about the Gotenberg-Output-Filename header.

This errors happens if one ore more form fields are invalid.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: {error}

If a request doesn't complete within a specified duration, the API will respond with a 503 Service Unavailable status.

See the API module configuration for more details.

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body: Service Unavailable

Health Check route

GET /health

cURL

curl --request GET http://localhost:3000/health

200 OK
503 Service Unavailable

{
    "status": "up",
    "details": {
        "chromium": {
            "status": "up",
            "timestamp": "2021-07-01T08:05:14.603364Z"
        },
        "uno": {
            "status": "up",
            "timestamp": "2021-07-01T08:05:14.603364Z"
        }
    }
}

{
    "status": "down",
    "details": {
        "chromium": {
            "status": "up",
            "timestamp": "2021-07-01T08:05:14.603364Z"
        },
        "libreoffice": {
            "status": "down",
            "timestamp": "2021-07-01T08:05:14.603364Z",
            "error": "LibreOffice is unhealthy"
        }
    }
}

The details entry gathers the health checks from modules:

The Chromium module checks if the Chromium browser is healthy.
The LibreOffice module checks if the LibreOffice instance is healthy.

Metrics route

This route exposes the metrics from other modules using the Prometheus format.

GET /prometheus/metrics

Currently, the metrics include:

Metric	Description
{namespace}_chromium_requests_queue_size	Current number of Chromium conversion requests waiting to be treated.
{namespace}_chromium_restarts_count	Current number of Chromium restarts.
{namespace}_libreoffice_requests_queue_size	Current number of LibreOffice conversion requests waiting to be treated.
{namespace}_libreoffice_restarts_count	Current number of LibreOffice restarts.

See the Prometheus module configuration for more information.

Version route

GET /version

cURL

curl --request GET http://localhost:3000/version

200 OK

Content-Type: text/plain; charset=UTF-8
Gotenberg-Trace: {trace}
Body:

8.5.0

info

Custom variants of Gotenberg may not print a strict semver version.

For instance, the live demo prints 8.5.0-live-demo-snapshot.

Request Tracing

A trace, or request ID, serves to identify a specific request in the logs.

By default, the API assigns a unique UUID trace to every request. However, you also have the option to specify the trace for each request using the Gotenberg-Trace header.

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--header 'Gotenberg-Trace: debug' \
--form url=https://my.url \
-o my.pdf

The API also incorporates a Gotenberg-Trace header into each response. If you're utilizing the webhook feature, this header will also be added to each request made to your callbacks.

info

The --api-trace-header flag allows you to configure the header key. See the API module configuration for more details.

Output Filename

By default, for multipart/form-data endpoints, the API generates a response with a UUID filename. However, you have the option to specify the filename for each request using the Gotenberg-Output-Filename header.

cURL

curl \
--request POST http://localhost:3000/forms/chromium/convert/url \
--header 'Gotenberg-Output-Filename: my_filename' \
--form url=https://my.url \
-O -J

info

The API automatically appends the file extension, so there's no need for you to set it manually.

Convert with Chromium​

URL into PDF route​

HTML file into PDF route​

Markdown file(s) into PDF route​

Page Properties​

Header & Footer​

Wait Before Rendering​

Emulated Media Type​

Cookies​

Custom HTTP Headers​

Invalid HTTP Status Codes​

Console Exceptions​

Performance Mode​

PDF/A & PDF/UA​

Metadata​

Screenshots route​

Convert with LibreOffice​

Office documents into PDFs route​

Page Properties​

Merge​

PDF/A & PDF/UA​

Metadata​

Convert into PDF/A & PDF/UA route​

Read PDF metadata route​

Write PDF metadata route​

Merge PDFs route​

Health Check route​

Metrics route​

Version route​

Request Tracing​

Output Filename​

Convert with Chromium

URL into PDF route

HTML file into PDF route

Markdown file(s) into PDF route

Page Properties

Header & Footer

Wait Before Rendering

Emulated Media Type

Cookies

Custom HTTP Headers

Invalid HTTP Status Codes

Console Exceptions

Performance Mode

PDF/A & PDF/UA

Metadata

Screenshots route

Convert with LibreOffice

Office documents into PDFs route

Page Properties

Merge

PDF/A & PDF/UA

Metadata

Convert into PDF/A & PDF/UA route

Read PDF metadata route

Write PDF metadata route

Merge PDFs route

Health Check route

Metrics route

Version route

Request Tracing

Output Filename