Watermark PDF
Stamp text like CONFIDENTIAL or DRAFT diagonally across every page of a PDF. Control text, opacity and size — free and private.
Drop a file here or click to browse
PDF · processed locally, never uploaded
100% in-browser — your files are never uploaded to a server.
Watermark PDF stamps your own text — like CONFIDENTIAL, DRAFT or a company name — diagonally across every page. Control the text, opacity and size to mark documents as private, protect drafts, or brand the pages you share.
How to use Watermark PDF
- 1Upload the PDF you want to watermark.
- 2Type your watermark text and adjust the opacity and font size.
- 3Click “Add watermark”.
- 4Download the watermarked PDF.
Frequently asked questions
Can I control how strong the watermark looks?
Yes. Use the opacity slider to make it faint or bold, and the font size to make it larger or smaller.
Is the watermark applied to every page?
Yes — the text is tiled diagonally across all pages of the document.
Can I remove the watermark later?
A text watermark is merged into the page content, so keep your original file if you may need an un-watermarked copy.
Are my files uploaded to a server?
No. Every PDF tool here runs entirely in your browser using your device's own processing power. Your files never leave your computer, which makes it private and fast.
Is this tool really free?
Yes — it is completely free with no sign-up, watermarks or daily limits. You can process as many files as you like.
This tool processes your files locally in your browser and does not upload them anywhere. Always keep a copy of your original file.
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