OurPDF

Collab Whiteboard

Real-time P2P drawing – no server, no upload.

Runs in your browser · files never leave your device

How to use Collab Whiteboard

  1. 1

    Create an invite link and share it.

  2. 2

    Adjust the options – the defaults work for most files.

  3. 3

    Transfer or draw together – directly, browser to browser.

  • 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 Collab Whiteboard 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 Collab Whiteboard work on mobile?

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

Real-time P2P drawing – no server, no upload. OurPDF does this entirely inside your browser: nothing is uploaded, there is no account and no watermark.