Flatten PDFs

Flattens one or more PDF files by merging all interactive form fields (text inputs, checkboxes, etc.) into the page content. The resulting PDF cannot be edited.

POST/forms/pdfengines/flatten

Headers

Gotenberg-Output-Filenamestring

The filename of the resulting file - Gotenberg automatically appends the file extension. Defaults to a random UUID filename.

Gotenberg-Tracestring

A custom request ID to identify the request in the logs; overrides the default UUID.

Form Files

filesfile[]required

PDF files to flatten.

Example Request

cURL
curl \
--request POST http://localhost:3000/forms/pdfengines/flatten \
--form files=@/path/to/form.pdf \
-o my.pdf

Responses

The flattened PDF file.

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

The request had one ore more invalid form fields.

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

The request did not complete within the configured maximum duration.

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