PDF Watermark Tool
Add draft, confidential, or brand text to documents
🔒 All data is processed in your browser. Nothing is uploaded to any server.
Quick guide
What can PDF Watermark help you do?
Free PDF watermark tool. Add a text watermark with custom size and opacity. Browser-based, no upload.
Best for
Useful for quick file work, text cleanup, calculations, content creation, and website or AI checks.
How to use it
Open the tool, enter or upload what it asks for, then copy or download the result directly.
Privacy and limits
Most tools run in your browser with no sign-in. Very large files or older devices may hit browser memory limits.
Frequently Asked Questions
Does it change my original file?
No. A new watermarked PDF is generated.
Is my PDF uploaded?
No. Everything runs in your browser.