Firefox Release

March 5, 2015

Version 36.0.1, first offered to Release channel users on March 5, 2015

We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!


  • Pinned tiles on the new tab page can be synced

  • Support for the full HTTP/2 protocol. HTTP/2 enables a faster, more scalable, and more responsive web.

  • Locale added: Uzbek (uz)


  • 36.0.1 - Hello may become inactive until restart (1137469)

  • 36.0.1 - Print preferences may not be preserved (1136855)

  • 36.0.1 - Hello contact tabs may not be visible (1137141)

  • 36.0.1 - Disable the usage of the ANY DNS query type (1093983)

  • 36.0.1 - Fixed a startup crash with EMET (1137050)

  • 36.0.1 - WebGL may use significant memory with Canvas2d (1137251)

  • 36.0.1 - Accept hostnames that include an underscore character ("_") (1136616)

  • 36.0.1 - Option -remote has been restored (1080319)

  • 36.0.1 - Fix a top crash

  • Various security fixes

  • CSS gradients work on premultiplied colors

  • Fix some unexpected logout from Facebook or Google after restart



Web Platform

  • Support for the ECMAScript 6 Symbol data type added

  • unicode-range CSS descriptor implemented

  • CSSOM-View scroll behavior implemented allowing smooth scrolling of content without custom libraries

  • object-fit and object-position implemented.
    Defines how and where the content of a replaced element is displayed

  • isolation CSS property implemented.
    Create a new stacking context to isolate groups of boxes to control which blend together

  • CSS3 will-change property implemented.
    Hints the browser of elements that will be modified. The browser will
    perform some performance optimization for these

  • Improved ES6 generators for better performance

  • Changed JavaScript 'const' semantics to conform better to the ES6 specification.
    The const declaration is now block-scoped and requires an initializer. It also can not be redeclared anymore.


  • Style Editor: Extra white space appearing above the editor for a sourcemapped scss file (1128747)

  • For users who removed the Share & Hello buttons, this new version brings them back unexpectedly (1136300)

  • Firefox Hello does not work for link generators if there is no camera installed (1106941)

All Firefox downloads