Your files stay on your device

Watermark PDF

Stamp text over chosen PDF pages once or tiled, with size, colour, opacity, rotation, and position controls, then download the watermarked file.

Drop a PDF to watermark

PDF files · Without a password · stays on your device
Choose a PDFor paste

Pick a PDF, set the stamp, and the watermarked file downloads in place.

The PDF never uploads. Pages are stamped in this tab, and before the download is offered the saved bytes are reopened with a second PDF engine (pdf.js) that checks the page count, sizes, rotations, and that the stamp text actually landed on every chosen page.

What this does not do: image logos are out of scope, text only. CJK and emoji have no shape in the built-in Helvetica font and are drawn as ?. Tiling steps by two text widths across and four text heights down, so very short stamps refuse past a per-page ceiling instead of printing thousands. The original page content stays untouched underneath the stamp.
Options

More PDF & file tools

- Rotate PDF pages (/files/pdf-rotate)
- Merge PDFs (/files/pdf-merge)
- PDF inspector (/files/pdf-inspect)
All PDF & file tools (/files)

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