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Firefox 34 was released on December 1st, 2014. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.

Changes for Web developers

Developer Tools

Highlights:

All devtools bugs fixed between Firefox 33 and Firefox 34.

CSS

HTML

No change.

JavaScript

Interfaces/APIs/DOM

MathML

No change.

SVG

No change.

Audio/Video

No change.

Security and Networking

  • SSLv3 is now disabled by default (bug 1030963).
  • A warning is sent to the console when a Web site use the CSS reflected-xss directive (bug 1045902).

Changes for add-on and Mozilla developers

Add-on SDK

Highlights

Details

GitHub commits made between Firefox 33 and Firefox 34. This will not include any uplifts made after this release entered Aurora.

Bugs fixed between Firefox 33 and Firefox 34. This will not include any uplifts made after this release entered Aurora.

See also

Older versions

Document Tags and Contributors

Tags: 
 Last updated by: kohei.yoshino,