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.


Firefox for Android Release

August 6, 2013

Version 23.0, first offered to Release channel users on August 6, 2013

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


  • Basic support for subscribing to feeds (RSS/Atom) with long-tap in address bar

  • Dynamic toolbar hides navigation bar when scrolling down page content

  • Add pages to reading list on devices incapable of accessing Reader Mode

  • Preliminary implementation of Firefox Health Report for Android (see FAQ)

  • Added a setting to let users display URLs in the title bar instead of page titles

  • Users can now specify a default search engine

  • Implemented switch-to-tab

  • Long press Reader Mode icon to add article to Reading List (try it!)

  • Added Serif/Sans Serif font toggle to Reader Mode

  • Added hu and tr to Android multi-locale builds



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

  • Updated Firefox Logo

  • Improved about:memory's functional UI

  • Simplified interface for notifications of plugin installation

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

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

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

  • Awesomescreen remembers user entered search terms

  • "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.

  • Replace fixed-ratio audio resampler in capture code with Speex resampler and eliminate pseudo-44000Hz rate

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


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

  • New feature in toolbox: Network Monitor

  • Implemented a global browser console

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

  • Social share functionality

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

  • Added unprefixed requestAnimationFrame

Developer Information


  • Browser is unusable on the Nexus 10 tablet with Android 4.3

  • Some recent changes in the Google layout and CSS may cause issues in non-webkit browsers like Firefox

  • Font inflation may sometimes render inconsistent font sizes on certain pages

  • Firefox Sync will not behave as expected if multiple Firefox channels are installed on a single device (761206)

  • 'Video can't be played because the file is corrupt' on some HTC Gingerbread (Android 2.3) devices

  • Private Browsing - can't see URL bar text on variant of HTC Sense UI (Froyo)

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

  • Users on Android 4.3 will not be able to copy, cut, or select within the address bar

  • Startup crash on LG Optimus Black (LG P970) running GB