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.

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Your system doesn't meet the requirements to run Firefox.

Your system doesn't meet the requirements to run Firefox.

Please follow these instructions to install Firefox.

Firefox Privacy Notice

34.0beta

Firefox Beta

October 16, 2014

Version 34.0beta, first offered to Beta channel users on October 16, 2014

New

  • Firefox Hello real-time communication client

  • Easily switch themes/personas directly in the Customizing mode

  • Wikipedia search now uses HTTPS for secure searching (en-US only)

  • Implementation of HTTP/2 (draft14) and ALPN

  • Recover from a locked Firefox process in the "Firefox is already running" dialog on Windows

Fixed

  • CSS transitions start correctly when started at the same time as changes to display, position, overflow, and similar properties

Developer

  • WebIDE: Create, edit, and test a new Web application from your browser

  • Highlight all nodes that match a given selector in the Style Editor and the Inspector's Rules panel

  • Improved User Interface of the Profiler

  • console.table function added to web console

Developer Information

Web Platform

  • Support for the ECMAScript 6 Symbol data type added

  • ECMAScript 6 WeakSet Implemented

  • JavaScript Template Strings Implemented

  • CSS3 Font variants and features control (e.g. kerning) implemented

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

  • WebCrypto: wrapKey and unwrapKey implemented

  • WebCrypto: Import/export of JWK-formatted keys

  • matches() DOM API implemented (formerly mozMatchesSelector())

  • Performance.now() for workers implemented

  • WebCrypto: ECDH support

unresolved

  • Windows: On some combination of hardware and drivers, the main window could be black. In this case, update your graphics drivers (1083071)