See what’s new in Firefox!

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

20.0.1

Firefox for Android Release

April 11, 2013

Version 20.0.1, first offered to Release channel users on April 11, 2013

New

  • Per-window Private Browsing. Learn more.

  • New download experience. Learn more.

  • Ability to close hanging plugins, without the browser hanging

Fixed

  • 20.0.1 - Windows-only update to handle issues around handling UNC paths (see bug 846848)

  • Details button on Crash Reporter

  • Unity plugin doesn't display in HiDPI mode

  • Various security fixes

Changed

Developer

  • New JavaScript Profiler tool

  • Continued implementation of draft ECMAScript 6 - clear() and Math.imul

Developer Information

Web Platform

  • getUserMedia implemented for web access to the user's camera and microphone (with user permission)

  • Various <audio> and <video> improvements

  • <canvas> now supports blend modes

  • Some function keys may not work when pressed

  • Browsing and Download history clearing needs unification to avoid confusion on clearing download history

unresolved

  • If you try to start Firefox using a locked profile, it will crash (see 573369)