PDF Watermark
Add text or image watermark to any PDF.
What is the PDF Watermark?
Add text or image watermark to any PDF.
It runs 100% in your browser — your files never leave your device, no signup is required, and there are no usage limits or watermarks.
How to Use the PDF Watermark
- Paste, drop, or type your input into the tool above.
- Adjust the options to match what you need.
- Preview the result before copying or downloading.
- Everything is generated on your device — nothing is uploaded.
Why Use Our PDF Watermark?
- 100% private — files never leave your device.
- No signup, no email, no limits — completely free.
- Works on any device — desktop, tablet, mobile.
- No watermarks, no hidden fees.
Frequently Asked Questions
Is the PDF Watermark free?
Yes — completely free with no signup, no email, and no usage limits.
Are my files uploaded to a server?
No. Everything runs in your browser using JavaScript. Your files never leave your device.
Do I need to install anything?
No — just open this page in any modern browser (Chrome, Firefox, Safari, Edge).
Does the PDF Watermark work on mobile?
Yes, on iOS and Android browsers. Very large files are best handled on desktop.
Is there a file size limit?
No hard limits. Files under 100 MB work well on most devices.
Related Tools
Word Counter Pro
Advanced word counter with reading time, speaking time, keyw...
Morse Code
Translate text to Morse code and back instantly.
JSON to YAML
Convert JSON to YAML format instantly.
IP & Network Info
See your public IP address, ISP, location, connection type,...
CSS Minifier
Minify CSS online — remove comments, whitespace, and unneces...
Stopwatch
Precise online stopwatch with lap tracking.