Firefox 23

Check out "What's New" and "Known Issues" for this version of Firefox below. As always, you're encouraged to tell us what you think, or file a bug in Bugzilla.

We'd also like extend a special thank you to all of the new Mozillians who contributed to Firefox 23!

What's New

• FIXED

  23.0.1 - Rendering glitches on H.264 video only in FF23 on Vista (901944)

• FIXED

  23.0.1 - Spellchecking broken with non-ASCII characters in profile path (902532)

• FIXED

  23.0.1 - Audio static/"burble"/breakup in Firefox to Firefox WebRTC calls (901527)

• NEW

  Mixed content blocking enabled to protects users from man-in-the-middle attacks and eavesdroppers on HTTPS pages (learn more)

• NEW

  Options panel created for Web Developer Toolbox

• CHANGED

  "Enable JavaScript" preference checkbox has been removed and user-set values will be reset to the default

• CHANGED

  Updated Firefox Logo

• CHANGED

  Improved about:memory's functional UI

• CHANGED

  Simplified interface for notifications of plugin installation

• CHANGED

  Enabled DXVA2 on Windows Vista+ to accelerate H.264 video decoding

• CHANGED

  Users can now switch to a new search provider across the entire browser

• CHANGED

  CSP policies using the standard syntax and semantics will now be enforced

• CHANGED

  "Load images automatically" and Always show the tab bar" checkboxes removed from preferences and reset to defaults. Want to hide one tab? Try this add-on.

• CHANGED

  <input type='file'> rendering improvements (see bug 838675)

• DEVELOPER

  HTML5 <input type="range"> form control implemented

• DEVELOPER

  Implemented a global browser console

• DEVELOPER

  Social share functionality

• DEVELOPER

  Added unprefixed requestAnimationFrame

• DEVELOPER

  Write more accessible pages on touch interfaces with new ARIA role for key buttons

• DEVELOPER

  Dropped blink effect from text-decoration: blink; and completely removed <blink> element

• DEVELOPER

  New feature in toolbox: Network Monitor

• FIXED

  Various security fixes

Known Issues

• Unresolved

  Moving Firefox to background while playing a flash video in full screen mode and bring it back to view will freeze the app (see 809055)

• Unresolved

  Replace fixed-ratio audio resampler in webrtc.org capture code with Speex resampler and eliminate pseudo-44000Hz rate (see 886886)

  Unresolved on v22 Resolved in v24
• Unresolved

  If you try to start Firefox using a locked profile, it will crash (see 573369)