Watermark a PDF
Stamp text diagonally across every page. It runs in this tab, so the document is never uploaded — and we do not add a watermark of our own to the result.
Add watermark — free, in your browser
Your file is never uploaded. Everything below happens in this tab.
Need this on a folder, on a schedule, or from your own code? The API does the same eight operations, and compress and unlock as well.