Add a watermark to a PDF
Add a diagonal text watermark (like CONFIDENTIAL or DRAFT) to every page of a PDF, free and in your browser. Files stay on your device. No watermark from us.
- Runs in your browser: files are never uploaded
- No watermark, no sign-up
- Free to use
What you can do with Watermark PDF
- Stamp a diagonal text watermark such as CONFIDENTIAL or DRAFT across your PDF
- Type your own watermark text and apply it to every page in one go
- Get a semi-transparent watermark that marks the document without hiding the content underneath
- Add the watermark entirely in your browser, so the file is never uploaded to any server
- Use it free with no sign-up and no extra watermark added by us beyond the one you choose
How it works
- 1
Add your file
Drop your file into the tool. It stays in your browser, never uploaded.
- 2
Run Watermark PDF
Click the button and it processes instantly on your device.
- 3
Download or share
Download the result, or turn it into a shareable link and QR code.
Watermark PDF FAQ
Does the watermark go on every page?
Yes. Your chosen text is stamped diagonally across every page of the PDF in one step, so the whole document is marked consistently.
Will the watermark hide the text underneath?
No. The watermark is drawn semi-transparent and set at an angle, so it clearly marks the page while the original content stays readable behind it.
Is my file safe and private?
Yes. The watermark is applied entirely in your browser, so your PDF never leaves your device. The tool is free with no sign-up required.
Drag & drop your file here
Private: processed in your browser