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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

  1. 1
    Drop your PDF
    Drag the file in or click to choose.
  2. 2
    Type the watermark text
    CONFIDENTIAL, DRAFT, or your own copy.
  3. 3
    Tune the look
    Opacity, font size, rotation, and color sliders.
  4. 4
    Click Add watermark
    Stamps 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.

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