Stamp a diagonal text watermark across every page — adjust opacity to taste.
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Accepted: PDF · Files stay on your device
Upload your PDF.
Type the watermark text and pick opacity.
Download the watermarked PDF.
A watermark is text drawn over every page, usually rotated and semi-transparent so it is legible without making the document unreadable. It signals status — DRAFT, CONFIDENTIAL, SPECIMEN — and discourages casual reuse of a document.
This is a visual deterrent, not protection. Anyone can convert the page to an image and paint the mark out. Where the requirement is legal or contractual, pair the watermark with an explicit notice in the document text.
The stamp is vector text, so it prints sharply and does not inflate the file size noticeably.