Watermark PDF
Runs in your browser — your files are never uploaded.
Stamp a diagonal, semi-transparent text watermark — like "DRAFT" or "CONFIDENTIAL" — across every page of a PDF. Runs entirely in your browser, so sensitive documents never leave your device.
How to use Watermark PDF
- 1
Drop your PDF onto the box, or click to choose one.
- 2
Enter the watermark text and choose an opacity.
- 3
Click “Add watermark” to save the result.
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Paste this where you want the tool to appear. It runs entirely in your visitor's browser — no uploads, no account, no tracking.
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Frequently asked questions
Will the watermark appear when the PDF is printed?+
Yes — it’s stamped into each page as part of the document, so it shows both on screen and in print. That’s what makes it useful for marking a copy as DRAFT or CONFIDENTIAL.
Can I control how visible the watermark is?+
Yes — the opacity slider (5–100%) controls how strongly the watermark shows over the page content.
Can I remove a watermark added this way?+
Not with this tool — it only adds a watermark. Removing a watermark that’s baked into page content generally isn’t possible without the original, unwatermarked file.
Is my PDF uploaded anywhere?+
No. Watermarking runs entirely in your browser — nothing is sent to a server.