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Firefox for Android Beta
Release Notes

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.

33.0beta Firefox for Android Beta

September 2, 2014

Version 33.0beta, first offered to Beta channel users on September 2, 2014


  • Sending videos to Chromecast and Roku devices

  • Option added to clear data when quitting

  • Enhanced tab management:

    • Undo a closed tab
    • List recently closed tabs
    • Close all tabs at once
    • Quick switch-to-tab option when opening a new or private tab
  • Slimmer and faster JavaScript strings

  • New CSP (Content Security Policy) backend

  • Form elements updated to a more modern look

  • Locales added: Aragonese [an], Frisian [fy-NL], Kazakh [kk] and Khmer [km]


Web Platform

  • Support for the ECMAScript 6 Symbol data type added

  • DOMMatrix interface implemented

  • @counter-style rule from CSS3 Counter Styles specification implemented

  • WebCrypto: RSA-OAEP, PBKDF2 and AES-KW support

  • WebCrypto: wrapKey and unwrapKey implemented

  • WebCrypto: Import/export of JWK-formatted keys


  • Fix incomplete downloads being marked as complete by detecting broken HTTP1.1 transfers (237623)

  • MP4 videos will not play on Android L

  • Flash does not work on Android L

  • On Gingerbread, VP9/WEBM video artifacts: only plays on half screen

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All Firefox for Android Beta downloads