Add a Watermark to a PDF

Add a semi-transparent diagonal text watermark across every page, in your browser.

How to use

  1. Choose a PDF.
  2. Enter your watermark text.
  3. Click Add watermark.

Frequently asked questions

Is the watermark on every page?

Yes — the text is drawn diagonally and centered on each page at low opacity.

Last reviewed: 2026-01-01