Watermark PDF

Add a diagonal text watermark across every page of a document.

Runs 100% in your browser — this tool makes no network requests at all.

Drop a PDF here

or click to browse — files stay on your device

Keep this file on this device so I can come back to itOff by default. Ticking this stores a copy in your browser's own storage — never uploaded — which is deleted after 24 hours, when you untick this, or when you press Clear session.