July 18, 2014

NEW UPDATE: Free Download Mozilla Firefox 31 Final Offline Installer for Windows Mac and Linux

Firefox is most popular browser in the World, used by millions of people. It offers great security, privacy, and protection against viruses, spyware, malware, and it can also easily block pop-up windows. The latest version is highly customizable, supports add-ons and extensions, and each browser profile can be configured with different settings.


User Experience
  • The enhancements to Firefox provide the best possible browsing experience on the Web. The new Firefox smart location bar, affectionately known as the "Awesome Bar," learns as people use it, adapting to user preferences and offering better fitting matches over time.
  • Firefox is built on top of the powerful new Gecko platform, resulting in a safer, easier to use and more personal product.
  • Firefox raises the bar for security. The new malware and phishing protection helps protect from viruses, worms, trojans and spyware to keep people safe on the Web.
  • Everyone uses the Web differently, and Firefox lets users customize their browser with more than 5,000 add-ons.

Firefox 31 Minimum System Requirements


Operating Systems
  • Windows XP SP2
  • Windows Server 2003
  • Windows Vista
  • Windows 7
  • Windows 8
  • Windows 8.1
Please note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 25, only 32-bit builds of Firefox 25 are supported at this time.
Recommended Hardware
  • Pentium 4 or newer processor that supports SSE2
  • 512MB of RAM
  • 200MB of hard drive space


Operating Systems
  • Mac OS X 10.6
  • Mac OS X 10.7
  • Mac OS X 10.8
  • Mac OS X 10.9
Recommended Hardware
  • Macintosh computer with an Intel x86 processor
  • 512 MB of RAM
  • 200 MB hard drive space


Software Requirements
Please note that Linux distributors may provide packages for your distribution which have different requirements.
  • Firefox will not run at all without the following libraries or packages:
    • GTK+ 2.18 or higher
    • GLib 2.22 or higher
    • Pango 1.14 or higher
    • X.Org 1.0 or higher (1.7 or higher is recommended)
    • libstdc++ 4.3 or higher
  • For optimal functionality, we recommend the following libraries or packages:
    • NetworkManager 0.7 or higher
    • DBus 1.0 or higher
    • HAL 0.5.8 or higher
    • GNOME 2.16 or higher

What's New in Firefox 31 Final Version ?

What’s New

  • New Add the search field to the new tab page
  • New Support of Prefer:Safe http header for parental control (learn more)
  • New mozilla::pkix as default certificate verifier (learn more)
  • New Block malware from downloaded files (learn more)
  • New Partial implementation of the OpenType MATH table (section 6.3.6) see documentation about mathematical fonts and the MathML Torture Test for details
  • New audio/video .ogg and .pdf files handled by Firefox if no application specified (Windows only)
  • New Upper Sorbian [hsb] locale added
  • Changed Removal of the CAPS infrastructure for specifying site-specific permissions (via capability.policy.* preferences). Most notably, attempts to use this functionality to grant access to the clipboard will no longer work. The sole exception is the checkloaduri permission, which may still be used as before to allow sites to load file:// URIs.
  • HTML5 WebVTT implemented and enabled (learn more)
  • HTML5 CSS3 variables implemented (learn more)
  • Developer Developer Tools: Add-on Debugger (learn more)
  • Developer Developer Tools: Canvas Debugger (learn more)
  • Developer New Array built-in: Array.prototype.fill() (learn more)
  • Developer New Object built-in: Object.setPrototypeOf() (learn more)
  • Developer CSP 1.1 nonce-source and hash-source enabled by default
  • Developer Developer Tools: Eyedropper tool added to the color picker (learn more)
  • Developer Developer Tools: Editable Box Model (learn more)
  • Developer Developer Tools: Code Editor improvements (learn more)
  • Developer Developer Tools: Console stack traces (learn more)
  • Developer Developer Tools: Copy as cURL (learn more)
  • Developer Developer Tools: Styled console logs (learn more)
  • Developer navigator.sendBeacon enabled by default (learn more)
  • Developer Dialogs spawned from the onbeforeunload event no longer block access to the rest of the browser
  • Fixed Search for partially selected link text from context menu (985824)

Known Issues

  • unresolved Slow shut downs lead to 'Firefox is already running' warning (see 966469 and 985655)
  • unresolved PDF.js: With some fonts, some characters might not be displayed. Affects a very small number of PDF (1028735)
  • unresolved Mac OS X and Windows: Citrix Receiver no longer works. As a workaround, mark the plugin as Always Enable in the addon manager (1025627)
  • unresolved GNU/Linux and Windows XP: Google Maps Street View displays a black screen (1034593)
  • unresolved Mac OS X: cmd-L no longer opens a new window when no window is available (1008793)



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