Lay one PDF over another — a letterhead, a border, a signed approval block — on every page.
Use Stamp PDF (interactive) — JavaScript required for uploads.
The first file is the document. The second file supplies the stamp, and its first page is used.
Runs entirely in your browser — your file is never uploaded. The stamp is embedded as vector content, scaled to fit and centred, so it stays crisp at any zoom.
Yes, completely free and with no account.
Yes — use Image Watermark for PNG or JPG.
Not yet. Extract the pages first, stamp them, then merge.
This tool works entirely on this page. Your file is opened by JavaScript here, changed in memory, and handed straight back to you — it is never uploaded. Open your browser's Network tab while you use it and you will see nothing leave your device.
Because there is no server doing the work, there is no signup, no watermark, no file size limit, and no daily cap. Nothing is stored, because nothing is received.
Browse all free PDF tools, or read how we handle privacy and security.