Add a watermark online
Put a text watermark — like Draft or Confidential — on every page of your PDF, and choose how visible it is.
Add watermark
Drop your PDF here
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PDF only · Up to 200 MB per file
0 bytes uploaded — processed entirely on your device.
Watermarks, simply explained
The watermark text is printed in the middle of every page, scaled to the page width. Lower opacity makes it sit quietly behind the content; diagonal text runs corner to corner, like classic draft stamps. The text is drawn in an embedded font that covers Latin, Greek and Cyrillic letters.
Private by design.
Your file is processed in your browser and is not uploaded to a server or saved in browser storage. Cloudflare Web Analytics measures page views and performance; it does not receive PDF contents or filenames. Local processing does not guarantee a PDF is safe to open; only open files from sources you trust.