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Mozilla Firefox Browser


Firefox Browser

Firefox Browser, known in Chinese as "火狐浏览器" (Fire Fox Browser), is a free, open-source web browser from Mozilla.

Firefox was released in 2004 and is one of the most popular browsers today.

Firefox runs on Windows, Mac OS X, Linux, and Android.

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Firefox Statistics

The table below details Firefox usage from Browser Statistics:

2014 Total FF 30 FF 29 FF 28 FF 27 FF 26 FF 25 Older
May 24.9% 0.1% 14.2% 5.2% 0.5% 0.5% 0.2% 4.2%
April 25.0% 1.1% 18.1% 1.2% 0.7% 0.3% 3.6%
March 25.6% 0.3% 3.4% 16.3% 1.0% 0.4% 4.2%
February 26.4% 0.6% 11.7% 8.7% 0.6% 4.8%
January 26.9% 1.2% 18.9% 1.0% 5.8%
2013 Total FF 26 FF 25 FF 24 FF 23 FF 22 FF 21 FF 20 FF 19 FF 18 FF 17 Older
--- --- --- --- --- --- --- --- --- --- --- --- ---
December 26.8% 6.9% 13.3% 1.1% 0.5% 0.4% 0.3% 0.4% 0.2% 0.2% 0.5% 3.0%
November 26.8% 1.0% 16.2% 3.5% 0.7% 0.5% 0.4% 0.4% 0.3% 0.2% 0.7% 2.9%
October 27.2% 0.1% 1.3% 18.4% 2.0% 0.7% 0.4% 0.5% 0.3% 0.4% 0.7% 2.5%
September 27.8% 0.1% 0.3% 3.1% 17.5% 1.0% 0.6% 0.5% 0.3% 0.4% 0.9% 3.2%
August 28.2% 0.7% 10.8% 9.9% 1.0% 0.7% 0.4% 0.4% 0.8% 3.5%
July 28.9% 0.1% 1.2% 18.0% 3.1% 1.0% 0.5% 0.5% 0.8% 3.7%
June 28.9% 0.1% 1.7% 19.8% 1.3% 0.7% 0.5% 0.8% 4.0%
May 27.7% 0.1% 0.5% 6.5% 14.0% 0.9% 0.6% 0.8% 4.3%
April 27.9% 0.1% 0.7% 12.9% 7.3% 0.8% 0.8% 5.9%
March 28.5% 0.1% 0.9% 19.0% 1.4% 0.9% 6.2%
February 29.6% 0.1% 0.2% 4.6% 16.0% 1.2% 7.5%
January 30.2% 0.1% 0.6% 12.4% 8.3% 8.8%
2012 Total FF 17 FF 16 FF 15 FF 14 FF 13 FF 12 FF 11 FF 9-10 FF 4-8 FF 3.6 Older
--- --- --- --- --- --- --- --- --- --- --- --- ---
December 31.1% 16.3% 5.6% 1.3% 1.0% 0.7% 1.1% 0.6% 1.2% 1.2% 0.8% 1.3%
November 31.2% 2.5% 19.4% 1.8% 1.2% 0.8% 1.2% 0.6% 1.3% 1.3% 0.8% 0.3%
October 31.8% 0.4% 9.5% 12.4% 1.8% 1.0% 1.4% 0.8% 1.4% 1.6% 1.0% 0.5%
September 32.2% 0.8% 17.7% 4.8% 1.3% 1.6% 1.0% 1.6% 1.9% 1.2% 0.3%
August 32.8% 1.9% 20.3% 2.1% 1.8% 1.1% 1.7% 2.1% 1.2% 0.7%
July 33.7% 0.3% 7.4% 15.2% 3.0% 1.3% 2.1% 2.4% 1.5% 0.5%
June 34.4% 0.6% 12.1% 12.5% 1.6% 2.3% 2.7% 1.8% 0.8%
May 35.2% 0.1% 0.8% 21.4% 3.8% 2.7% 3.4% 2.3% 0.7%
April 35.8% 0.1% 2.6% 21.6% 3.8% 3.8% 3.1% 0.8%
March 36.3% 0.3% 9.1% 17.3% 5.0% 3.7% 0.9%
February 37.1% 0.1% 0.6% 24.2% 6.5% 4.3% 1.4%
January 37.2% 0.1% 18.6% 12.4% 5.0% 1.1%
2011 Total FF 9 FF 8 FF 7 FF 6 FF 5 FF 4 FF 3.6 FF 3.5 FF 3.0 Older
--- --- --- --- --- --- --- --- --- --- --- --- ---
December 37.7% 1.8% 22.8% 2.1% 1.5% 1.2% 1.3% 5.6% 0.6% 0.5% 0.3%
November 38.1% 0.4% 12.7% 11.5% 2.2% 1.5% 1.5% 6.9% 0.6% 0.5% 0.3%
October 38.7% 0.6% 19.8% 5.1% 2.0% 1.8% 7.9% 0.7% 0.5% 0.3%
September 39.7% 1.5% 22.2% 3.1% 2.2% 9.0% 0.7% 0.7% 0.3%
August 40.6% 9.5% 15.9% 2.9% 10.3% 0.8% 0.8% 0.4%
July 42.0% 0.6% 23.2% 4.6% 11.5% 0.9% 0.9% 0.3%
June 42.2% 5.6% 21.5% 12.3% 1.5% 0.9% 0.4%
May 42.4% 0.3% 23.4% 15.6% 1.8% 1.0% 0.3%
April 42.9% 15.7% 23.8% 2.1% 1.1% 0.2%
March 42.2% 5.2% 32.9% 2.5% 1.3% 0.3%
February 42.4% 1.9% 35.8% 2.9% 1.5% 0.3%
January 42.8% 1.5% 36.1% 3.1% 1.7% 0.4%
2010 Total FF 4 FF 3.6 FF 3.5 FF 3.0 Older
--- --- --- --- --- --- --- --- --- --- --- --- ---
December 43.5% 1.1% 36.5% 3.5% 2.0% 0.4%
November 44.0% 0.8% 36.9% 3.8% 2.0% 0.5%
October 44.4% 0.7% 36.2% 4.5% 2.4% 0.6%
September 45.1% 0.8% 35.3% 5.6% 2.9% 0.5%
August 45.8% 0.6% 35.2% 6.1% 3.1% 0.6%
July 46.4% 0.4% 34.5% 7.3% 3.6% 0.6%
June 46.6% 32.7% 9.1% 4.0% 0.8%
May 46.9% 31.7% 10.0% 4.4% 0.8%
April 46.4% 29.4% 11.5% 4.6% 0.9%
March 46.2% 22.1% 17.6% 5.6% 0.9%
February 46.5% 10.5% 28.5% 6.5% 1.0%
January 46.3% 2.2% 34.2% 8.6% 1.3%
2009 Total FF 3.5 FF 3.0 FF 2.0 Older
--- --- --- --- --- --- --- --- --- --- --- --- ---
December 46.4% 33.3% 11.2% 1.2% 0.7%
November 47.0% 31.4% 13.6% 1.5% 0.5%
October 47.5% 29.8% 15.7% 1.6% 0.4%
September 46.6% 27.3% 17.2% 1.8% 0.3%
August 47.4% 21.0% 24.0% 1.9% 0.5%
July 47.9% 12.1% 33.3% 1.9% 0.6%
June 47.3% 1.2% 43.4% 2.3% 0.4%
May 47.7% 44.3% 2.9% 0.5%
April 47.1% 43.4% 2.8% 0.9%
March 46.5% 42.2% 3.0% 1.3%
February 46.4% 41.5% 3.8% 1.1%
January 45.5% 39.5% 4.6% 1.4%
2008 Total FF 3.0 FF 2.0 FF 1.5 Moz
--- --- --- --- --- --- --- --- --- --- --- --- ---
December 44.7% 38.1% 6.2% 0.1% 0.3%
November 44.6% 35.9% 8.0% 0.3% 0.4%
October 44.5% 34.9% 8.7% 0.4% 0.5%
September 43.1% 31.9% 10.1% 0.6% 0.5%
August 44.2% 25.5% 17.5% 0.7% 0.5%
July 43.1% 20.7% 21.1% 0.8% 0.5%
June 41.5% 8.9% 31.2% 0.9% 0.5%
May 40.5% 2.9% 35.9% 1.0% 0.7%

The above statistics are based on users from tutorialpro.org.


Firefox 29

Firefox 29 was released on April 29, 2014.

Firefox 29 can run on Windows, Mac, Linux, and Android.

New Features:


Firefox 28

Firefox 28 was released on March 18, 2014.

Firefox 28 can run on Windows, Mac, Linux, and Android.

New Features:


Firefox 27

Firefox 27 was released on February 4, 2014.

Firefox 27 can run on Windows, Mac, Linux, and Android.

New Features:

-Scrollable fieldsets supported

-CSS cursor keywords -moz-grab and -moz-grabbing are now prefix-free

-Support for the Math.hypot() mathematical function

-Dashed lines supported on Canvas


Firefox 26

Firefox 26 was released on December 10, 2013.

Firefox 26 can run on Windows, Mac, Linux, and Android.

New Features:

-All Java plugins default to "click to play"

-Password manager supports script-generated password fields

-H.264 encoded videos supported on Linux

-MP3 audio supported on Windows XP - This completes MP3 support across Windows OS versions

-Removed prompt when sites request AppCache

-Support for CSS3 image-orientation property

-New App Manager - Allows you to deploy and debug HTML5 apps on Firefox OS phones and Firefox OS simulators

-IndexedDB available as an "optimistic" storage area - Uses LRU eviction strategy, does not require storing any hints and data in the pool, just a temporary ephemeral storage

-Reduced memory usage, improved image processing


Firefox 25

Firefox 25 was released on October 29, 2013.

Firefox 25 can run on Windows, Mac, Linux, and Android.

New Features:

-Web Audio support

-CSS3 background-attachment:local support

-iframe document content can be specified inline

-Many new ECMAScript 6 functions are available

-Profiler tool can save and import test results


Firefox 24

Firefox 24 was released on September 17, 2013.

Firefox 24 can run on Windows, Mac, Linux, and Android.

New Features:

-Enabled support for WebRTC (on Android)

-Shared NFC on Android

-Added mass-close tabs to the right feature

-New scrollbar style on OS X 10.7

-Drag chat windows into standalone windows

-Optimized SVG rendering around images when tiling and scaling images

-Improved Browser Console for enhanced debugging experience, replacing the existing Error Console

-No longer supports the Undo Close Tab feature

-No longer supports sherlock files loaded from application or profile directories


Firefox 23

Firefox 23 was released on August 7, 2013.

Firefox 23 can run on Windows, Mac, Linux, and Android phone editions.

New Features:

-New logo

-Mixed Content Blocker - Prevents viewing insecure content on the web by completely restricting URLs

-Share button - Allows users to share content with friends/family with just a simple click

-Web Console tool specifically designed for developers - Breaks down website components and notifies developers of load times


Firefox 22

Firefox 22 was released on June 25, 2013.

Firefox 22 can run on Windows, Mac, Linux, and Android phone editions.

New Features:

-Fixed 14 security issues

-WebRTC enabled by default

-OdinMonkey - Improved JavaScript performance

-Ability to change HTML5 audio/video playback rate

-New display zoom option, enabled by default - Renders larger text on high-resolution displays

-Text files auto-wrap


Firefox 21

Firefox 21 was released on May 14, 2013.

Firefox 21 can run on Windows, Mac, Linux, and Android phone editions.

New Features:

-Firefox Health Report - A tool for tuning the browser

-Improved startup time

-Support for HTML5 <main> element

-Support for scoped stylesheets

-Three "Do Not Track" options: "Track," "Do Not Track," and "Not Set"

-Extended Social API - Added new social services: Cliqz, Mixi, and msnNOW, as well as Firefox's Facebook Messenger (a desktop window chat client)

Firefox 20

Firefox 20 was released on April 2, 2013.

Firefox 20 can run on Windows, Mac, Linux, and Android phones.

New Features:


Firefox 19

Firefox 19 was released on February 20, 2013.

Firefox 19 can run on Windows, Mac, and Linux.

New Features:


Firefox 18

Firefox 18 was released on January 8, 2013.

Firefox 18 can run on Windows, Mac OS X (Snow Leopard, Lion, and Mountain Lion), Linux, and Android.

New Features:


Firefox 17

Firefox 17 was released on November 20, 2012.

Firefox 17 can run on Windows, Mac OS X, Linux, and Android.

New Features:


Firefox 16

Firefox 16 was released on October 9, 2012.

Firefox 16 can run on Windows, Mac OS X, Linux, and Android.

New Features:


Firefox 15

Firefox 15 was released on August 28, 2012.

Firefox 15 can run on Windows, Mac OS X, Linux, and Android.

New Features:


Firefox 14

Firefox 14 was released on July 17, 2012. Firefox 14 can run on Windows, Mac OS X, Linux, and Android.

New Features:


Firefox 13

Firefox 13 was released on June 5, 2012.

Firefox 13 can run on Windows, Mac OS X, Linux, and Android.

New Features:


Firefox 12

Firefox 12 was released on April 24, 2012.

Firefox 12 can run on Windows, Mac OS X, Linux, and Android.

New Features:


Firefox 11

Firefox 11 was released on March 13, 2012.

Firefox 11 can run on Windows, Mac OS X, Linux, and Android.

New Features:


Firefox 10

Firefox 10 was released on January 31, 2012.

Firefox 10 can run on Windows, Mac OS X, Linux, and Android.

New Features:


Firefox 9

Firefox 9 was released on December 20, 2011.

Firefox 9 can run on Windows, Mac OS X, and Linux.

New Features:


Firefox 8

Firefox 8 was released on November 8, 2011.

Firefox 8 can run on Windows, Mac OS X, and Linux.

New Features:

-Tabs can be loaded "on demand," making it faster to store windows with multiple tabs

-Support for Cross-Origin Resource Sharing (CORS) allows developers to load WebGL textures from other domains in a secure way

-HTML5 context menu support

-Firefox for Android: Mozilla has also added more features to enable Firefox to run on Android devices


Firefox 7

Firefox 7 was released on September 27, 2011.

Firefox 7 can run on Windows, Mac OS X, and Linux.

New features:

-Improved memory handling

-Bookmarks and password changes are always instantly synchronized when using Firefox Sync

-"http://" URL prefix is hidden by default (like Chrome)

-Updated the WebSocket protocol from version 7 to version 8

-Added a system for users to send performance data back to Mozilla


Firefox 6

Firefox 6 was released on August 16, 2011.

Firefox 6 can run on Windows, Mac OS X, and Linux.

New features:

-Address bar highlights the domain of the website you are visiting

-Streamlined site identity block appearance

-Added support for the latest draft version of WebSockets through a prefixed API

-Added support for EventSource / server-sent events

-Added support for window.matchMedia

-Added Scratchpad, an interactive JavaScript prototyping environment

-Added a new Web Developer menu item, moving related development items into it

-Improved usability of the Web Console

-Improved discoverability of Firefox Sync

-Reduced browser startup time when using Panorama


Firefox 5

Firefox 5 was released in June 2011.

Firefox 5 can run on Windows, Mac OS X, and Linux.

New features:

-Added CSS animation support

-Tuned HTTP idle connection logic for better performance

-Improved canvas, JavaScript, memory, and network performance

-Improved support for HTML5, XHR, MathML, SMIL, and canvas standards

-Improved spell checking

-Improved desktop environment integration for Linux users

-WebGL content no longer loads cross-domain textures

-Background tabs limit setTimeout and setInterval to 1000ms for better performance


Firefox 4

Firefox 4 was released in March 2011.

Firefox 4 can run on Windows, Mac OS X, and Linux.

New features:

-Support for over 80 languages!

-The fastest Firefox ever - Firefox is six times faster than previous releases

-App Tabs - A permanent home page that displays frequently visited sites like web mail, Twitter, Pandora, Flickr

-Switch to Tab - Easily find and switch to any open tab on the Awesome Bar

-Panorama - Drag and drop tabs into manageable groups to save time navigating multiple open tabs

-Firefox Sync - Access your Awesome Bar history, bookmarks, open tabs, passwords, and data across multiple computers and mobile devices

-New Add-on Manager - Over 200,000 add-ons available to customize Firefox's features, functionality, and appearance

-Do Not Track - Allows users to opt out of tracking for behavioral advertising

-Privacy first - Prevent others from accessing your browser history

-HTTP Strict Transport Security (HSTS) - Establish secure connections to stop "man-in-the-middle" attacks and protect sensitive data

-Content Security Policy (CSP) - Prevent cross-scripting attacks by allowing websites to explicitly tell the browser what content is legitimate

-JIT compiler - Faster page loads and better performance with enhanced existing TraceMonkey JIT and SpiderMonkey interpreter -HTML5 Support - Includes hardware acceleration, high-definition video (WebM), 3D graphics, offline data storage, professional typography, touchscreen interfaces, and the Mozilla Audio API.

-Improved Existing Tools - Such as CSS, Canvas, and SVG.

-Uninterrupted Browsing - Ensures uninterrupted browsing when Adobe Flash, Apple QuickTime, or Microsoft Silverlight plugins crash.


Firefox 3.6

Firefox 3.6 was released in January 2011.

Firefox 3.6 is built on Mozilla's Gecko 1.9.2 web rendering platform, which has been in development since early 2009. It includes many improvements for web developers, plugin developers, and users. This version is also faster, more responsive, and has been optimized to run on small device operating systems like Maemo.

New Features:

-Persona Themes - Allows users to change the appearance of Firefox with a single click.

-Prevents Installation of Outdated Plugins - Ensures user safety while browsing.

-Local Video Can Be Displayed Full Screen, Supporting Posters

-Improved JavaScript Performance

-Ability for Web Developers to Run Scripts Asynchronously - To speed up page load times.

-Support for Downloadable Web Fonts - Using the new WOFF font format.

-Improved Support for CSS3, DOM, and HTML5


Older Firefox Versions

Firefox 3.5 - Released in June 2009.

Firefox 3.0 - Released in June 2008.

Firefox 2.0 - Released in December 2006.

Firefox 1.5 - Released in November 2005.

Firefox 1.0 - Released in November 2004.


Firefox Resources

Firefox Support Site

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