Flatten transparency

Replaces transparent content with opaque content, for printers and archival formats that don't take transparency.

POST/forms/pdf/flatten-transparency

Form data

filesfile[]required

The PDFs.

archivesfile[]

ZIP files Gotenberg unpacks: each entry counts as a file uploaded under files.

downloadFromjson

URLs Gotenberg downloads first, as if you had uploaded the files. Each entry takes a url, and optionally extraHttpHeaders.

Options

No options.

Response

The PDF, or a ZIP of the PDFs when you send several.

The route also takes the headers. An error answers a status and a message: see Errors.

curl \
  --request POST http://localhost:3000/forms/pdf/flatten-transparency \
  --form files=@report.pdf \
  -o report.pdf

In a list of stages

The stage also runs in a list on /forms/pdf/pipe, and on the PDFs a Chromium or LibreOffice conversion makes, in its stages field:

curl \
  --request POST http://localhost:3000/forms/pdf/pipe \
  --form files=@report.pdf \
  --form 'stages=[
    { "op": "flatten-transparency" }
  ]' \
  -o report.pdf