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Security

Watermark PDF

Stamp text or an image across the pages.

Options

0.3
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e.g. 1-3, 5, 8-10 or "all".

Only if the file is password-protected.

Switches

Add a file to begin.

How it works

  1. 1Upload your file — drag it in or pick it from your device.
  2. 2Choose the options you need; defaults work for most files.
  3. 3Press Process and watch the progress in real time.
  4. 4Download the result. Anonymous files are deleted shortly after.

What this tool does

  • Accepts: .pdf · one file at a time
  • Produces: pdf
  • Runs on: the pdf worker, in an isolated process with a 3-minute ceiling
  • Account: not required — daily anonymous limit applies
  • API: available as toolSlug: "watermark-pdf"

Questions

Can the watermark go behind the text?

Yes. Behind is usually more readable; in front is harder to remove.

Can I watermark only some pages?

Yes — give a page range, and set a different watermark for the first page if you need one.

Security note

Files are checked to be what they claim (by content, not extension), processed in a sandboxed worker with no network, and deleted on the schedule your plan sets. We do not run antivirus and do not claim to — please do not upload files you do not trust. Read the security page.