Watermark PDF — Free, In Browser
Add a diagonal text watermark to every page. 100% in your browser — free, no sign-up, no upload.
Watermark every page
Add a diagonal text watermark (e.g. CONFIDENTIAL or DRAFT) across all pages, with adjustable opacity and size. Runs in your browser.
How to
- 1 Choose your PDF.
- 2 Type watermark text and set opacity.
- 3 Download the watermarked PDF.
FAQ
Is it free? +
Yes, completely free with no file limits.
Is my data private? +
Yes — this tool runs entirely in your browser. Your files and text are never uploaded.
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