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Watermark PDF
Stamp text like CONFIDENTIAL or your company name diagonally across every page.
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Select your file
or drag & drop a file here
🔒 This tool runs entirely in your browser. Your files are never uploaded.
How to watermark pdf
- 1Upload your PDF.
- 2Type your watermark text and pick opacity.
- 3Download the watermarked PDF.
Frequently asked questions
Are my files uploaded?
This tool runs entirely inside your browser — your files are never uploaded to any server, so your documents stay 100% private.