Watermark PDF
Stamp text across every page of a PDF.
Add a PDF, type the text you want stamped across it, and adjust the size, angle and opacity until it reads clearly without hiding the content underneath.
How to use it
- Add the PDF you want to watermark.
- Type the text and adjust size, opacity and angle.
- Press Add watermark and download the result.
Why use this tool
Completely private
Everything runs inside your browser. Your files and text are never sent to a server.
Free, with no limits
No sign-up, no watermarks and no cap on how many times you can use it.
Instant results
There is no upload or queue to wait for, so results appear as fast as your device can work.
Works on any device
Runs in any modern browser on phone, tablet or desktop. Nothing to install.
Frequently asked questions
- Why will it not accept Cyrillic text?
- The fonts built into the PDF format only cover Latin characters. Drawing Cyrillic means embedding a font file, which would add a large download to every visit for a feature most people do not need. The tool tells you rather than producing a file full of blank boxes.
- Can the watermark be removed?
- It is drawn into the page content, so it will not come off by toggling a setting. It is not security, though — anyone determined enough can edit it out. Treat it as a clear label, not protection.
- What opacity should I use?
- Around 20-30% is usually right: clearly visible, but the text underneath stays readable. Go higher only when the watermark matters more than the content, such as a sample document you do not want used.
- Does it go on every page?
- Yes, every page gets the same watermark, centred and rotated by the angle you choose. Per-page watermarks are not supported.