Watermark PDF
Add a text watermark like CONFIDENTIAL, a subtle logo image, or both. Set the size, opacity, position and diagonal angle — the stamp applies to every page.
Drop a file here or choose from device
Accepted: PDF · up to 50MBRecent files
Prefer a visual editor?
Open in PDF Editor
Open the file in the full PDF editor — drag pages, add text, shapes, signatures and more.
Processing your file…
This stays on your device — nothing is uploaded.
How it works
How to watermark pdf
Upload your PDF.
Enter the watermark text and optionally upload a logo image.
Tune size, opacity and position, then download.
FAQ
Watermark PDF — frequently asked
Yes. Watermark PDF is free to use with no account required, no watermarks on your output and no hidden limits.
No. Watermark PDF runs entirely in your browser — your file never leaves your device.
Watermark PDF accepts PDF files.
Yes — the whole workspace is fully responsive and works the same way on mobile browsers.