PDF Tools
Add Watermark to PDF
Stamp text across every page — DRAFT, CONFIDENTIAL, a name or a date — at any angle and opacity.
Privacy
Your files never leave your device. PDFs are parsed and rewritten by your own browser, so nothing is uploaded, queued or logged.
Tips
- A watermark added this way sits on top of the page content and can be removed by anyone with a PDF editor. It signals status; it does not protect anything.
- Tiled watermarks are much harder to crop out than a single central one, which matters for documents that might be screenshotted.
- Keep opacity around 15–25%. Higher and it fights the text; lower and it vanishes when printed.
- The text is drawn with a standard font, so no font file is embedded and the file barely grows.
Frequently asked questions
Can the watermark be removed?
Yes, by anyone reasonably determined — it is a content layer, not a security feature. If a document genuinely must not be redistributed, watermarking is a deterrent and an audit aid, not a control.