Stamp diagonal text across every page — useful for drafts, confidential labels, or simple branding.
Use Watermark PDF (interactive) — JavaScript required for uploads.
Watermarks are drawn as text on each page. This is not DRM or password protection.
Yes, completely free and with no account.
Not yet — text watermarks only in this version.
No. It is a visible text stamp only.
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.