Mozilla Firefox icon

Download Mozilla Firefox® 39.0 Free

The Firefox web browser represents a fast, secure and customizable way to surf the web


Mozilla Firefox logoThe award-winning web browser is now faster, more secure and fully customizable for your online life. Mozilla Firefox has powerful features that make your internet experience even better, it delivers helpful features to make your web surfing more productive.

Mozilla Firefox continues to lead in online security and now includes active protection against online scams to keep you safe.

Choose from over a thousand extentions and themes that can improve Firefox, it’s easy to personalize Mozilla Firefox to make it your own.


  • Practical tabbed browsing
  • Spelling checking
  • Find suggestions
  • Restore last browsing session
  • Follow feeds like RSS
  • On-page search
  • Organized bookmarks
  • Pop-up remover
  • Streamlined interface
  • Accessibility
  • Anti-malware protection
  • Automatic updates
  • Private data protection
  • Multiple add-ons like extentions and themes


  • A new feature called Firefox Hello was added for social networks sharing URLs
  • Mozilla Firefox offers support for Unicode 8.0 skin tone emoji
  • Web accessibility was improved with support for 'switch' in ARIA 1.1
  • The insecure support for SSLv3 networking was removed
  • The service for Mac file formats was improved
  • Support for CSS Scroll Snap Points was included
  • Fetch API for network requests from shared, dedicated and service workers was implemented
  • <link rel="preconnect"> for a protected future connection was implemented
  • String values are now accepted in list-style-type
  • Cascading of animations and CSS transitions was improved
  • You can drag and drop nodes in Inspector markup view
  • Cubic bezier tooltip offers a group of timing-function presets for CSS animations
  • WebSocket connections has localhost available offline
  • You have Web Console input history after toolbox closing.
  • The incomplete downloads marked as complete bug, caused by detecting broken HTTP1.1 transfers was fixed
  • The Hello conversation window occasionally failing to open error was fixed.
  • Flash displaying was improved by fixing a regression
  • The IPv6 fallback to IPv4 performance was improved
  • Loads caused by previous pages are now correctly ignored by security state indicator
  • Other security issues were fixed

Download82 Editor's Review of Mozilla Firefox

5/5 Stars RatingMozilla Firefox is one of the most widely used internet browsers. Earning a lot of awards from the software market, there is no question that it is one of the trusted software programs. Released in 2004 and developed by Mozilla Corporation, Firefox is serving for about 26% of internet users worldwide.

This program features a sorting tool for bookmarks which lets user easily organize their favorite web sites. It is also built in with a spell checker for typing purposes. The Download Manager of this browser is very reliable allowing user to stop, pause and resume downloading.

Mozilla Firefox was also built to organize tabs. Tabb browsing is practiced by most internet users. Its tabbed interface lets users to open many pages and web sites at the same time.

This browser can be customized to block annoying pop ups that can aggravate the web surfing. It can detect many viruses which are harmful to the PC while downloading or opening unsafe web sites. Its add on manager can be customized by users which can enhance the browsing time. Its interface can be customized by changing its themes with ones acquired from the web. The application called Personas changes the preview of the basic and main window of the browser.

It was built in with a PDF viewer that allows user to instantly preview ebooks and magazines from the web.

Firefox can get data like passwords, bookmarks, forms and add ons from the user’s previous browser.  The details that are transferred are secured and safe so other users cannot access them.

It can secure and save plugins that are crushing. Plugins like Apple Quick time, Microsoft Silverlight, Greasemonkey and Adobe Flash can be protected from bugging the browser.

Mozilla Firefox is one of the reliable browsers on the web. This wonderful program is free and any user can download it anytime. It is very easy to use and a lot of netizens prefer using Firefox for their blogs and social network accounts. The ability to plug in your favorite add-ons is one of its aces. The download manager is also very handy.

Nowadays, file sharing through torrent files are commonly used by users. Firefox does not have support for torrent file downloads. Some users experienced freezing of the software.

Firefox is extremely recommended as a browser because it owns all the basic features that a browser should have.

Download Details

Name Mozilla Firefox
Version 39.0
Date Updated
Week / All Time Downloads 139 / 8,499
License Free
Filename Firefox Setup 39.0.exe
Size 39.2MB
MD5 Checksum 3d6e1f120e618ab6ee653dba79bde8c6
SHA1 Checksum 75eccbd9b2d44210b551c9a5045f03f01e899528
SHA-256 Checksum
Operating Systems Windows 2003 Server, Windows Vista, Windows XP, Windows 7, Windows 8
Category Web Browsers

Additional Downloads

  • Mozilla Firefox Portable

    This is the portable version of Mozilla Firefox. Put it on your USB stick or your external HDD and use Firefox internet browser on any computer you want without installing it.

    Click to download Mozilla Firefox Portable
    Free Download
    FirefoxPortable_39.0_English.paf.exe - 41.7MB

External Links


Mozilla Firefox screenshot 1 Mozilla Firefox screenshot 2 Mozilla Firefox screenshot 3


PCMag Logo"Firefox remains a favorite among the browsing cognoscenti for its leading customization possibilities, attractive design, and open-source provenance. Recently it's also gotten a lot faster and become the thrifty-memory-use champion, dispelling earlier complaints of excessive memory use. The independent software developer Mozilla continues to innovate, though the organization's focus has shifted to mobile developments of late, with its Firefox OS phone operating system."

Virus Tests

Mozilla Firefox's files hosted on our download servers were verified on July 31, 2015 with about 50 different anti-virus and anti-malware programs and were found safe to use.

Some of the test results:
AVG AntiVirus
AVG AntiVirus
avast! Antivirus
avast! Antivirus
Avira Antivirus
Avira Antivirus
Kaspersky Anti-Virus
Kaspersky Anti-Virus

Full anti-virus reports: Firefox Setup 39.0.exe, FirefoxPortable_39.0_English.paf.exe
Mozilla Firefox is a registered trademark of Mozilla. This site is in no way associated with Mozilla.
Click to download Mozilla Firefox Free Download
Firefox Setup 39.0.exe - 39.2MB

User Rating

Average user rating: 4.6/5 (19 votes)
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