Add Watermark to PDF
Place a text watermark in the middle of every page — set the wording, size, opacity and angle.
Drop your PDF here
or click to browse — the file stays on your device
Done
How to watermark a PDF for free
Drop your PDF above, type the wording you want — CONFIDENTIAL, DRAFT, a client name — then pick the font size, how transparent it should be and whether it runs diagonally or straight across. The text is centred on every page and the finished file downloads instantly.
Your document never leaves the browser
The whole watermark is drawn locally on your own machine, so nothing is uploaded and no copy of the file is kept. Use a low opacity when the pages still need to be easy to read, and a larger size when you want the mark to be unmistakable in a printout.