📄 PDF Tools

Watermark PDF

Add a diagonal text watermark to every page of a PDF.

About the Watermark PDF

Add a diagonal text watermark to every page of a PDF. It runs entirely in your browser — nothing is uploaded to a server, so it is fast and private. Just use it and go.

How to use the Watermark PDF

  1. Enter or paste your input into the tool above.
  2. Adjust any options to fit what you need.
  3. Copy or download the result.

Frequently asked questions

Is the Watermark PDF free?

Yes. This tool is completely free to use, with no sign-up required.

Is my data safe?

Everything runs locally in your browser. Your input never leaves your device.

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