Watermark PDF
Stamp every page with custom text — CONFIDENTIAL, DRAFT, your own copy. Tunable opacity, font size, rotation, and color. Browser-only.
100% in your browser. Files never uploaded.
How to use
- 1Drop your PDFDrag the file in or click to choose.
- 2Type the watermark textCONFIDENTIAL, DRAFT, or your own copy.
- 3Tune the lookOpacity, font size, rotation, and color sliders.
- 4Click Add watermarkStamps every page in your browser. File never uploads.
FAQ
Can I use an image watermark instead of text?
Not yet — image watermarks are on the roadmap. For now, text-only.
Will the watermark appear on every page?
Yes. Per-page selection is on the roadmap.
Can it be removed by the recipient?
A motivated user with PDF editing tools can remove or paint over a flat-stamped watermark. For tamper-resistant marking, you need digital signing — a different category of tool.
Are files uploaded?
No. Everything happens in your browser using pdf-lib.