Watermark PDF stamps text — like DRAFT, CONFIDENTIAL or your name — across every page of a document. Choose the position, size, opacity, angle and colour, from a single centred stamp to a repeating tiled pattern. It's applied in your browser with pdf-lib, so your file is never uploaded.
Drop a PDF in; the first page previews with your watermark.
Type your text and set its position, size, opacity, angle and colour.
Export to stamp the watermark on every page and download the result.
Watermark PDF stamps text — like DRAFT, CONFIDENTIAL or your name — across every page of a document. Choose the position, size, opacity, angle and colour, from a single centred stamp to a repeating tiled pattern. It's applied in your browser with pdf-lib, so your file is never uploaded.
Yes — the text is stamped on all pages. Choose Tiled to repeat it across each page, or Center/Top/Bottom for a single stamp.
Lower the opacity for a faint background stamp, or raise it for a bold overlay. A diagonal angle is common for draft marks.
No — the watermark is drawn on top; the original page content is untouched and still selectable.
Yes — Watermark PDF is completely free. There's no account, sign-up, watermark or limit on the core tool.
No. This tool runs entirely in your browser — your file is processed on your own device and never leaves it. The only network request is an anonymous usage counter.
No. It runs in any modern browser — Chrome, Edge, Safari, Firefox, Brave — with nothing to download or install.