Add Watermark to PDF Online Free
Runs 100% in your browser — your files never leave your device.
Marking a document DRAFT before it circulates, or CONFIDENTIAL before it leaves the building, should take seconds, not a desktop app. Type the text, set the opacity, choose diagonal or a tiled grid, and every page is stamped the same. Runs entirely on your device — the document is never uploaded.
How it works
- 1
Drop your PDF
The file stays on your device throughout.
- 2
Set the watermark
Text, opacity, diagonal slant, and single or tiled placement.
- 3
Download the stamped PDF
Every page carries the mark; one click saves it.
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