Drop a PDF here or click to browse
How to watermark pdf
- 1
Upload a PDF
Choose the PDF to watermark.
- 2
Configure the stamp
Set the text, opacity, rotation, size, and position.
- 3
Download
Save the watermarked PDF.
Frequently asked questions
No. This tool runs entirely in your browser using open-source libraries, so your files never leave your device.
Yes — adjust opacity, rotation, size, and 9-anchor position with live controls.
Yes. Every tool is free with no watermark and no sign-up. An optional premium plan raises file-size and batch limits and removes ads.