Add Watermark to PDF
Stamp a diagonal text watermark across every page of a PDF. Free online add watermark to pdf that runs in your browser — no upload, no watermark, no sign-up.
or drop files here
Processed on your device — nothing is uploaded.
About the add watermark to pdf
Add Watermark to PDF is a free online tool that lets you stamp a diagonal text watermark across every page of a PDF in seconds. Everything happens locally inside your browser, so your files and text never leave your device and nothing is ever uploaded to a server. That makes it a safe choice for private, sensitive or work documents — and it also means the tool stays fast even on a phone or a slow connection. There is no account to create, no email to hand over, no daily limit and no watermark on anything you produce. It's built for students, freelancers and office professionals who need a reliable result right now, then want to get on with their day.
How it works
- 1. Drop your file into the box above (or tap to browse).
- 2. Adjust the options if you want a different result.
- 3. Press “Add watermark” — processing happens on your device.
- 4. Download or copy your result instantly. Nothing is stored anywhere.
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