Mozilla Firefox Portable


Enjoy this user-made portable version of the world's most popular browser, open source and free to use


  • High-speed browsing on the go
  • No installation required
  • Tabbed browsing
  • Integrated search and address bar
  • Strong HTML5 support
  • Plenty of add-ons to try
  • Excellent security settings including private browsing and antivirus protection


  • No Firefox Hello feature

Mozilla Firefox Portable is a popular web browser, developed by John Haller. Browse the internet in style with this user-made portable version. It is available to download in its full version, completely free. 

Browsing at its Best

Whether you're a casual internet user or a more serious one, everyone needs a browser that they can rely on for surfing the web, shopping, downloading files, consuming high-quality media and much more. While Firefox's desktop version has fulfilled this role for a long time, now users of the browser have the opportunity to go portable, bringing all that they love about Firefox into the palm of their hand, whether on a USB flash drive, portable hard drive, iPod/MP3 player or a smartphone. 

The browser's main interface looks similar to other popular web browsers. It supports tabbed browsing, has an integrated search bar, making it easy to look up content in seconds. When we are looking up content, any past searches we have conducted, even if they were on another machine, will auto-fill as we begin typing

Portable browsing, albeit a slightly different animal, still emphasizes the same great qualities that make for an effective browser. When you download the application, it will start up just like the ordinary Firefox. The browser's main interface looks similar to other popular web browsers. It supports tabbed browsing, has an integrated search bar, making it easy to look up content in seconds. When we are looking up content, any past searches we have conducted, even if they were on another machine, will auto-fill as we begin typing. These can also be viewed in your History tab. Your bookmarks page can be accessed from two locations and used to manage your favorite sites. The browser has a separate search bar to the right of the address bar as well as a series of buttons at the bottom of your screen to quickly access things such as Downloads, Bookmarks, History, Add-ons and Syncing. Unlike the main version of Firefox, Firefox Portable will not support voice and video conversations using Firefox Hello. While only a supplementary feature, it was still a nice addition to the original application. 

What's New in Firefox 37

Above all else, the main changes that were implemented by the latest version of Firefox were security related. First of all, the company releaseed 13 separate security patches with various fixes, designed to improve one's user experience. These are in the form of advisories, some of which are rated critical. A new security feature, known as opportunistic encryption, was also being planned, but was dropped to a potential issue with Man-in-the-Middle attackers. The browser will now integrate OneCRL (Certificate Revocation List), making SSL/ TLS certificate revocation more viable. This can be accessed from the web developer tools as standard. Supplementing the page info view, Firefox 37 also improved its padlock with the network view, allowing one to access via developer tools the status of individual sub-resource loads. While this all sounds quite technical, sufficed to say that for developers it is a much-needed improvement.

Finally, there is the new feedback system, known as Firefox Heartbeat. Although there is already a support and feedback option in place, this feature will allow users to be more aware of how to leave feedback as well as what is happening in the world of Firefox and its ongoing development. Definitely a welcome addition.

Performance and Other Features

Compared with industry benchmarks, Firefox performs extremely well. Loading speeds are well within the range of its rivals. JavaScript speeds are similar. For those eager to start browsing, it also has solid start-up times, with averages of less than two seconds for cold and warm start-ups. Unlike in previous iterations of the software, memory consumption is down considerably, resulting in better performance overall.

Firefox has a bunch of features which place it above its competitors. The browser has some nice social API features allowing you to track social media feeds on the fly. Unfortunately, Facebook have recently pulled their support for this, but there are many other websites supporting it. The browser has excellent HTML5 support, recognizing the majority of sites coded in this way. For web developers, the browser also has a great set of developer tools, allowing you to code in Java, CSS and other programming languages in a small, compact interface window.

What would Firefox be without its add-ons? For a long time, it has remained a leader in this regard, and continues to be. The 'Tools' menu can be used to quickly access your add-ons and apps, offering literally thousands of different options to enrich your browsing experience. The only unfortunate thing here is that flash support is not offered in the browser as standard, and that you are forced to download an add-on for it. On the other hand, Firefox's PDF reader is included by default.

What's Unique About the Portable Version

It should be noted that Firefox already has an Android version that is quintessentially portable. A portable app is different. What makes it more convenient is its accessibility. Using the Portableapps.com launcher, once you launch the browser it will begin keeping track of your settings including bookmarks, browser history, passwords and so on. This will proceed just like a regular browser, the difference being that these settings are tied to that portable browser, leaving no trace of them on the original once you disconnect. From a security point of view, this is very useful. Firefox's default security settings are already fairly strong, with protection against faulty web certificates, malware, spyware, phishing bots, privacy settings, pop-ups, attack sites, unwanted installations and much more. Private browsing will also still be an option. Exceptions can be set in each case. With this method, however, you can take all of your passwords and other settings with you and they will be available on any device. 

The Verdict

Mozilla Firefox Portable offers the same great features that the original Firefox does, only portable, meaning you can take your history, bookmarks, passwords and other settings with you without leaving a trace. Just place the executable file on your storage device, run it on a PC and away you go. Enjoy high-speed, secure browsing, intelligent searching, developer tools for coding, private browsing, advanced security and antivirus settings, plenty of add-ons and so much more. Download it now for a new way to experience Firefox. 

Mozilla Firefox Portable icon

Type Free (GPL)

Version 47.0.1

Size 91.35 MB

Other versions

47.0.1 37.0.1 15.0 13.01 12.0