Watermark PDF
Stamp a text watermark like CONFIDENTIAL or DRAFT on every page of a PDF. Control size, angle, color and opacity. Free and private PDF watermark tool.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
How to use Watermark PDF
- 1Drop your file(s) into the box above.
- 2Choose your options.
- 3Click the button to run Watermark PDF and download the result.
Questions
Is Watermark PDF free?
Yes. Watermark PDF is 100% free with no limits, no watermark, no sign up and no email required.
Are my files uploaded to a server?
No. Your files are processed entirely inside your browser using JavaScript. They never leave your device, so it is private and works even on slow connections.
Does Watermark PDF work on my phone?
Yes. Watermark PDF works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.