OurPDF

Add Watermark

Protect documents with text or image watermarks.

Runs in your browser · files never leave your device

How to use Add Watermark

  1. 1

    Choose your PDF (or drop it on the page).

  2. 2

    Type the text or choose a logo, then set position and opacity.

  3. 3

    Download the updated PDF.

  • 100% in your browser – no upload
  • Free, no sign-up, no watermark
  • Works offline once loaded
  • Part of 67 private PDF tools

Questions & answers

Is Add Watermark free?

Yes, completely free with no limits on the number of files and no watermark.

Are my files uploaded to a server?

No. Everything runs in your browser on your own device. Your documents are processed locally and never leave your computer or phone.

Does Add Watermark work on mobile?

Yes. It works in any modern browser on Android, iPhone, Windows, macOS and Linux. Edit & Annotate tools also work offline after your first visit.

Protect documents with text or image watermarks. OurPDF does this entirely inside your browser: nothing is uploaded, there is no account and no watermark.