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Watermark PDF

Stamp text like DRAFT or CONFIDENTIAL across every page of a PDF.

100% Client-Side

Type your watermark, adjust its look in the live preview, and apply it to every page.

How to use the Watermark PDF

  1. 1

    Drop the PDF you want to watermark.

  2. 2

    Type the watermark text, for example CONFIDENTIAL or DRAFT.

  3. 3

    Choose centered or repeated, then adjust size, opacity, angle and color while watching the preview.

  4. 4

    Click Add watermark and download the stamped PDF.

Frequently asked questions

No. The PDF is opened and edited entirely in your browser, so your documents never leave your device. Nothing is stored or sent anywhere.

The watermark is drawn into each page's content. It's not meant to be removable, though it isn't a security feature on its own — anyone with PDF editing software could cover it.

The built-in PDF font supports Latin letters, numbers and common symbols. Other alphabets aren't supported yet.

Not yet — this tool adds text watermarks.

Missing a feature or tool?

Tell us what would make Watermark PDF more useful, or what to build next.