Add a watermark to a PDF
Add a diagonal text watermark (like CONFIDENTIAL or DRAFT) to every page of a PDF, free and in your browser. Files stay on your device. No watermark from us.
- Runs in your browser — files are never uploaded
- No watermark, no sign-up
- Free to use
How it works
- 1
Add your file
Drop your file into the tool. It stays in your browser, never uploaded.
- 2
Run Watermark PDF
Click the button and it processes instantly on your device.
- 3
Download or share
Download the result, or turn it into a shareable link and QR code.