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Watermark — free online tool
Stamp custom text — like CONFIDENTIAL or DRAFT — across every page of a PDF, with adjustable opacity. It runs entirely in your browser — your files never leave your device, and it's completely free with no signup.
- Custom watermark text
- Adjustable transparency
- Applied to every page, free
How to watermark
- 1Upload your PDF.
- 2Type your watermark text and set the opacity.
- 3Click Add Watermark and download the file.
Frequently asked questions
Can I control how visible the watermark is?
Yes — use the opacity slider to make it subtle or bold.
Is the watermark on every page?
Yes, the watermark is stamped across all pages of the document.
Need more than Watermark?
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