Those Boring Tools
Document ToolsPrivate by design

Add Watermark to PDF

Add a diagonal text watermark, like "DRAFT" or "CONFIDENTIAL", across every page of a PDF — processed entirely on your device.

How to use this tool

  1. 1Add a PDF file.
  2. 2Enter the watermark text.
  3. 3Download the watermarked PDF.

Frequently asked questions

Can I control the watermark's opacity or position?+

The watermark is applied diagonally across the page at a fixed, semi-transparent opacity designed to stay readable through it — custom positioning isn't currently supported.

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