💧

Watermark PDF

Edit

Stamp a custom text watermark on every page of your PDF with adjustable opacity, color, size and rotation.

📄

Drop files here or click to browse

🔒 100% Private

Files never leave your browser. No upload to any server.

⚡ Instant

Processing runs locally on your device. No queues, no waiting.

🆓 Free & Open Source

No signup, no watermarks, no limits. MIT-licensed code.

Frequently asked questions

Can I add an image watermark?

Currently text watermarks are supported. Image watermarks are coming soon.

Will the watermark be on every page?

Yes — the watermark is stamped on all pages of the PDF.