Watermark PDF
Add a diagonal or tiled text mark such as Confidential, Draft or your name. Helvetica Bold only.
No file
Text is stamped on every page in your browser. Keep opacity low so the document stays readable.
Watermark a PDF with text
A light “Confidential”, “Draft” or name across the page marks copies you send by email. This tool stamps Helvetica Bold on every page, either centred or tiled. Opacity stays low so the document remains readable.
Use it on invoices, notes or unofficial ID scans you already own when you do not want the file reused without a mark. It is not encryption. Anyone can still copy the text.
- Custom text, colour and rotation
- Tiled or single centred mark
- Runs on your device
Watermark versus edit PDF
Edit PDF is for a label in one corner or white-out on a line. Watermark PDF is for a repeating diagonal mark on every page. If you need both, watermark last so the mark sits on top.
Related pages
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Frequently asked questions
Can I add Confidential to a PDF for free?
Yes. Type the word, keep Repeat on, download. No login.
Does a watermark lock the file?
No. It only draws text. It is not a password.
Can I use Hindi text?
This stamp uses Helvetica Bold, which does not cover Devanagari. Use English or numerals, or stamp an image in Edit PDF.