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PDF tools · pages

Watermark PDF

Stamp one short text (DRAFT, CONFIDENTIAL, or your own words) across the pages of a PDF, so anyone who opens it knows what it is. The stamp is printed into the pages when the file saves, in your browser; the document is never uploaded.

For a draft going out for comments, a quote that is not final, or a pack that must not be mistaken for the signed version.

  1. 01

    Pick the PDF

  2. 02

    Write the stamp

  3. 03

    Watermark and download

Drop a PDF on the tray, or click to pick one

PDF · it stays on this device

The stamp

Size

Strength and slant

Which pages

File spec

file
none picked yet

Read this before you run: the stamp becomes part of the pages, like ink soaked into the paper. Keep your clean original; this page cannot un-stamp a file.

Pick a PDF to begin.

How it works

The page writes your words onto every page you chose, at the size and strength you picked, and saves the file with the words inside it. The download is how we protect your privacy: the program that does this job is part of this page, loaded from this site, and your file is read into the page and never uploaded. From then on the stamp prints and copies with the file, like ink soaked into the paper.

Honest limits

A watermark is a label, not a lock. It is printed into the page content, which means a determined person with a full PDF editor could still lift it off; it stops a casual reader mistaking the file, not a determined one copying it. If the file itself must stay shut, put a password on it as well, with the protect tool.

A password-protected PDF cannot be opened by this tool. Take its password off first with the unlock tool, then bring the file back.

Questions

Can the watermark be removed?

Not here, and not by accident: it is printed into the pages when the file saves. But a determined person with a full PDF editor could still lift it off. That is the honest position: the stamp stops a casual reader mistaking the file, not a determined one copying it. If the file itself must stay shut, put a password on it as well, with the protect tool.

Does the stamp cover photos and charts too?

Yes. It is drawn over the whole page, across text, photos and charts alike, at the strength you picked. At the light setting it sits under your reading; at the strong setting it is the first thing seen.

How long can the stamp be?

Up to 40 characters: a word or a short phrase, like DRAFT, CONFIDENTIAL or DO NOT COPY. The stamp is sized to span the page, so a long sentence would be shrunk to nothing; if you need a paragraph on the file, it belongs in the document, not across it.

Where does my document go?

Nowhere. It is read into this page and watermarked in your browser. Watch the network panel while it works if you want to check.