Stamp custom text across every page of a document, with control over colour, size, opacity and rotation. It uses pdf-lib in your browser, so the file never leaves it — perfect for marking something DRAFT, CONFIDENTIAL, or with your own brand.
Your files are processed securely in your browser and are not uploaded to our servers.
Add Watermark to PDF works on your documents locally, so you get the result in seconds with no watermarks, no sign-up and no files leaving your device.
Yes. The text is stamped on all pages of the document.
This tool adds text watermarks; image overlays are not supported here.
No — the watermark is applied locally in your browser.
Drag & drop files here
One PDF file