Watermark PDF - Add Text Stamp Online Free

Upload your PDF, type your watermark text, adjust transparency and position, then download the stamped file.

Yes. The watermark tool is free with no account required.

Yes. You control the opacity so the watermark sits lightly behind or over your content.

No. Your original pages stay intact; the watermark is layered on top.

Yes. The whole process runs in your browser with no uploads.

A text watermark instantly shows how a document should be handled before anyone reads it. Mark internal reports as CONFIDENTIAL, unfinished work as DRAFT, or a sample as SAMPLE. The stamp appears on every page, so the message survives printing, forwarding and screenshots.

Yes. Stamping your name, company or a word like COPYRIGHT across proposals, portfolios and proofs makes casual reuse less likely and shows the document is yours. It is not encryption, though, so use a password as well for genuinely sensitive files.

Use the opacity setting, which runs from 10 to 60 percent, to make the text lighter or stronger. A lower value keeps the watermark subtle behind your content, while a higher value makes it stand out. Font size is adjustable from 18 to 96 points too.

Diagonal centers one large stamp across the page and suits most documents. Tiled repeats the text over the whole page for stronger coverage, while a corner placement stays discreet. Horizontal center is a clean middle option when you want visibility without covering much content.

The watermark becomes part of the PDF when you download it, so it cannot simply be switched off afterwards. Always keep your original, unwatermarked file if you might need a clean copy for printing, publishing or sending to someone else later.