PDF Tool
Watermark PDF
Stamp a diagonal text watermark such as CONFIDENTIAL or DRAFT across every page of a PDF in your browser. Set the text and opacity, then download. Nothing is uploaded.
Drop files here or choose files
Accepted: PDF · Recommended maximum: 50 MB
Preview
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Your file is ready
100% private — your files are processed in your browser and never uploaded anywhere.
Simple private workflow
How do I add a watermark to a PDF without uploading it?
- 01
Choose one PDF file from your device.
- 02
Type the watermark text and choose the opacity.
- 03
Download the watermarked PDF created locally.
Questions answered
Watermark PDF FAQ
Is my PDF uploaded to add a watermark?
No. The watermark is drawn on your device with browser-side JavaScript, so the PDF is never uploaded or stored on a server.
Can I control how strong the watermark looks?
Yes. You can adjust the opacity so the watermark is subtle or bold on every page.
Will the watermark appear on all pages?
Yes. The chosen text is stamped diagonally across every page of the document.
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