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.


Firefox Beta

November 16, 2016

Version 51.0beta, first offered to Beta channel users on November 16, 2016


  • Added support for FLAC (Free Lossless Audio Codec) playback

  • A warning is displayed when a login page does not have a secure connection

  • Added support for WebGL 2

  • Added Georgian (ka) and Kabyle (kab) locales

  • Support saving passwords for forms without 'submit' events

  • Improved video performance for users without GPU acceleration:

    • Less CPU Usage
    • Better full screen experience
  • Zoom indicator is shown in the URL bar if the zoom level is not at default level

  • View passwords from the prompt before saving them

  • Remove Belarusian (be) locale


  • Use Skia for content rendering (Linux)