PDF Tool

Add watermark

Stamp text across your pages, with adjustable size, colour, transparency and layout.

or drop files here

Files stay on your device — nothing is uploaded.

Your files never leave your browserEverything happens on your device: no upload, no server-side processing, no storage. You can verify it in your browser's network tab.

How it works

  1. Add a PDF file.
  2. Enter the watermark text and choose diagonal, horizontal or tiled.
  3. Check the live preview, apply it, and download the PDF.

Frequently asked questions

Which characters can I use?
Latin characters only. The tool warns you while you type if something cannot be rendered.
Can I watermark only some pages?
Yes. Enter a page range to limit the watermark to those pages.