Add a watermark to a PDF
Overlay a text watermark (e.g. CONFIDENTIAL, DRAFT) across every page. Everything runs locally in your browser — your file is never uploaded to a server.
Drop a PDF here or click to browse
Stays on this device — never uploaded
Choose filesAbout watermark pdf
Mark a PDF as CONFIDENTIAL, DRAFT or with your own text before you share it. Control the opacity and angle so the watermark is visible without hiding the content underneath.
The watermark is applied in your browser and the document is never uploaded.
Also searched for: watermark pdf free · add text watermark to pdf · stamp confidential on pdf · add draft watermark pdf
Questions, answered
Q.Can I control how strong the watermark looks?
Yes. Adjust the opacity and angle so the watermark is clear but the page stays readable.
Q.Are my files uploaded to a server?
No. Every operation runs entirely in your browser using JavaScript, so your files never leave your device. Open your browser's Network tab and watch — nothing is sent or stored.
Q.Is it free? Do I need an account or to install anything?
It's completely free with no sign-up, no email and nothing to install. There are no daily limits and no watermarks on your output.
Q.Does it work on Mac, Windows, Chromebook and phones?
Yes. It runs in any modern browser — Chrome, Edge, Firefox or Safari — on Windows, macOS, Linux, Chromebook, iPhone and Android. There is nothing to download.