Watermark PDF

Stamp text like “Confidential” or “Draft” across every page of a PDF, and set the size, angle, colour and opacity — all in your browser, nothing uploaded.

Read the guide: How to Add a Watermark to a PDF

Drop a PDF here

PDF files — processed privately on your device

How it works

  1. 1

    Add a PDF

    Drop in the PDF you want to mark.

  2. 2

    Set the watermark

    Type the text and adjust size, angle, colour and opacity in the live preview.

  3. 3

    Download

    The watermark is applied to every page. Nothing is uploaded.

Instant & 100% private — nothing is uploaded

Your images are processed instantly on your own device and are never sent to a server — so there are no upload waits, no size limits from us, and no copies kept anywhere.

Frequently asked questions

Are my files uploaded to a server?
No. Everything happens entirely on your own device, inside your browser. Your PDFs and any passwords never leave your computer, so there are no upload waits and no copies kept anywhere.
How do I add a watermark to a PDF?
Type the text you want, set the size, angle, colour and opacity, then download. The watermark is drawn across every page of the file.
Can I make the watermark faint?
Yes. The opacity slider goes from a barely-there tint to a bold stamp, so you can keep the page readable underneath.
Can the watermark be removed later?
The text is merged into each page, so it is not a layer that toggles on and off. Keep your original file if you may need a clean copy.