OurPDF

Flatten PDF

Make PDFs permanently non-editable – removes forms, annotations & scripts.

Runs in your browser · files never leave your device

How to use Flatten PDF

  1. 1

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

  2. 2

    Choose forms, annotations and scripts.

  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 Flatten PDF 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 Flatten PDF 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.

Make PDFs permanently non-editable – removes forms, annotations & scripts. OurPDF does this entirely inside your browser: nothing is uploaded, there is no account and no watermark.