PDF Watermark & Page Numbers

Stamp a diagonal watermark and/or page numbers onto a PDF — entirely in your browser.

Stamp a diagonal watermark and/or page numbers onto a PDF — entirely in your browser. Free and 100% private — runs entirely in your browser, nothing is ever uploaded.

About PDF Watermark & Page Numbers

PDF Watermark & Page Numbers is a free, browser-based document tool that lets you stamp a diagonal watermark and/or page numbers onto a PDF — entirely in your browser. Because it runs entirely on your device, there’s nothing to install, no account to create, and your data is never uploaded to a server.

How to use PDF Watermark & Page Numbers

  1. Open PDF Watermark & Page Numbers — it loads in any modern browser, with no sign-up.
  2. Drop your PDF, or click to choose the file.
  3. Get the result instantly, processed locally on your device.
  4. Copy or download the output — what you entered is never sent anywhere.

Frequently asked questions

Is PDF Watermark & Page Numbers free?
Yes — PDF Watermark & Page Numbers is completely free, with no account, sign-up or usage limits.
Is my data private?
Yes. PDF Watermark & Page Numbers runs 100% in your browser, so your files and text are processed on your own device and never uploaded.
Do I need to install anything?
No — PDF Watermark & Page Numbers works in any modern desktop or mobile browser with nothing to download.