About this tool
Stamp text or image watermarks on your PDF.
Add watermark to PDF
EditStamp text or image watermarks on your PDF.
Drop a PDF here
Process ≤ 50.0 MB
Privacy by architecture
All processing happens in your browser. Your PDF never uploads to our servers. No account required, no usage limits.
How it works
- 1Choose a PDF — never leaves your device
- 2Configure the tool to your needs
- 3Save the result to your downloads
Frequently asked questions
Is this PDF watermark tool free?
Yes, completely free with no usage limits and no watermark from us.
Can I add an image watermark?
Text watermarks are supported now. Image watermarks coming in a future update.
Will my PDF be uploaded to a server?
No. Watermark addition runs in your browser.
Can I customize opacity and position?
Yes, you can control opacity (10-100%), rotation (-90° to +90°), and choose from 5 positions (center, top-left, top-right, bottom-left, bottom-right).
Does it work offline?
Yes, after the first visit.