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Foundry✦pdf

Watermark PDF

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Stamp a diagonal text watermark — DRAFT, CONFIDENTIAL, a name — across every page of a PDF. It runs in your browser, so the document never leaves your device.

Drag & drop PDF file here

or click to choose a file

PDF · processed in your browser, never uploaded

How to watermark pdf

  1. 1Select your PDF.
  2. 2Type the watermark text, e.g. CONFIDENTIAL.
  3. 3Click Watermark — the stamped PDF downloads instantly.

Frequently asked questions

Where does the watermark appear?+

Diagonally and centered on every page, semi-transparent so the content stays readable.

Are my files uploaded?+

No. The watermark is applied in your browser; nothing is uploaded.

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