Add a watermark to PDF
Put a diagonal or horizontal text watermark on every page of a PDF. Set the wording, size, colour, transparency and angle. The file is processed in your browser and never uploaded.
Your files never leave your browser
How to use
- 1
Type the watermark text and adjust size, opacity, angle and colour.
- 2
Drop your PDF files into the box.
- 3
Download the watermarked PDFs or grab them all as a ZIP.
FAQ
Are my files uploaded?
No. The watermark is drawn with pdf-lib in your browser.
Can I use an image as a watermark?
This tool adds text watermarks. Image watermarks are on the roadmap.
Can the watermark be removed later?
It is drawn as vector text on top of the page. Like any PDF content, it can be removed with editing software, so it is a deterrent rather than protection — combine it with Protect PDF if needed.
Does it support non-Latin text?
Yes. A bundled Unicode font covers Cyrillic, Vietnamese, Turkish and most European scripts.