Watermark PDF
Runs in your browserUse this page to add watermark to PDF pages as a diagonal line of text, such as Confidential. The stamp is text, not a picture.
Drop PDFs here or choose files
Files stay on this device. Nothing is uploaded.
How to use Watermark PDF
The text sits on top of the page at an angle and scales with the page size, so a wide sheet and a tall sheet both get a readable mark. Pick wording that will still make sense if someone prints a single page from the file.
A stamp is not a lock. Someone with a PDF editor can remove it. If you need a file that will not open without a password, use the lock tool instead.
Questions people ask
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