PDF Watermark - Free Offline Tool (No Upload)
Add text watermarks to PDF files in your browser. 100% offline - no upload, no account, no data sent to any server. Free.
No Upload
100% Private
Free
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Drop your PDF here
Watermark text will be added to every page
20%
Adding watermark...
Watermarked PDF
Frequently Asked Questions
Does the watermark appear on every page?
Yes. The text watermark is applied diagonally across every page of the PDF.
Does this PDF watermark tool work offline?
Yes. pdf-lib processes your file entirely in the browser. No server involved.
Can I remove the watermark later?
This tool burns the watermark as a text layer into the PDF. Keep your original file if you need an unwatermarked version.