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Mozilla Firefox Description. Mozilla Firefox is a free, fast and efficient cross-platform web browser and one of the most popular browsers in use. Firefox boasts speed and tabbed. Firefox makes it to version 54, Mozilla dubs it 'the best Firefox' Mozilla has announced the latest update to its popular web browser. Firefox is now up to version number 54 with changes that, according to the company, make it 'the best Firefox in history' thanks to an important performance tweak in the form of multiprocess support when loading tabs.

Windows 10 may show you a warning when installing apps that aren't from the Microsoft store. See Windows 10 warns me to use a 'Microsoft-verified' app for more information.

This article explains how to download and install Firefox on Windows using a simplified online installer. (If you need a full, offline installer or custom options, see For advanced users, below.)

  • To update Firefox from a previous version, see Update Firefox to the latest release.
This article only applies to Windows.For instructions to install Firefox on Mac, see How to download and install Firefox on Mac.For instructions to install Firefox on Linux, see Install Firefox on Linux.

Before installing Firefox, see the Firefox System Requirements to make sure that your computer has the required operating system and recommended hardware.

Do not install Firefox using a limited Windows XP account. For more information, see Microsoft's support article How to determine your user account type in Windows.

  1. Visit this Firefox download page in any browser, such as Microsoft Internet Explorer or Microsoft Edge.
  2. Click the button. The Firefox Installer that downloads will automatically offer you the best available version of Firefox for your computer.
    • If you use Microsoft Edge or Internet Explorer, a notification bar will appear at the bottom of the page with an option to open or run the Firefox Installer file.
    • Click Open file on Microsoft Edge or on Internet Explorer, to start the process.
    • In other browsers, you may need to first save the Firefox installer to your computer, then open the file you downloaded.
      Note: If you see an Open File - Security Warning dialog, click or .

  3. The User Account Control dialog may open, to ask you to allow the Firefox Installer to make changes to your computer. If this dialog appears, click to start the installation.
  4. Wait for Firefox to finish installing.
  5. When the installation is complete, Firefox will open.
Note: A notification bar with a button may be shown at the bottom of the page, if Firefox was previously installed. See Refresh Firefox - reset add-ons and settings to learn more.
InstallCongratulations, you are done installing Firefox!

Double-click the Firefox icon that was placed on the desktop whenever you want to go online.

Having problems?

Here are some articles that can help you:

If you need more help, you can always get community support.

The streamlined Firefox Installer installs a suitable Firefox version for your language and operating system. For example, on 64-bit Windows, it installs the 64-bit version of Firefox (details here). To install Firefox in another language or operating system, or if you need a full, offline installer with custom options, download the Firefox Setup file from this download page. Options available in the full, offline installer are described in the article, Custom installation of Firefox on Windows.

Mozilla Firefox is a feature-rich and highly customizable web browser that’s user-friendly enough for beginners and sophisticated enough for advanced users.


Firefox has managed to retain significant market share despite stiff competition from Google Chrome and Microsoft Internet Explorer and Edge. Speed has also been a priority of the Mozilla team, and that’s something Firefox has always and continues to do well. The UI has lagged behind at times due to that focus, but that really isn’t the case anymore. The Firefox UI is sleek, modern and customizable.

As mentioned, Firefox has always been a fast web browser, and the latest iteration may be the fastest on the market. It also boasts an intuitive and well-organized UI, which makes navigating easy and enjoyable and really lets you get the most out of the fast page loads and transitions. You may like the UI uncluttered, as it is by default, but you can also customize it to your liking if you don’t.

Firefox has all the features you expect from a modern web browser, such as a tabbed interface, synchronization and backup and restore. There’s a Panorama feature, and the option to reclaim a tab you’ve closed accidentally is really useful in practice. The browser has a clever inline search feature that finds words and phrases fast. It’s also an excellent browser for performing online research because it has integrated conveniences, such as sticky notes and archived histories.

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The browser is also highly customizable through add-ons. Some of these add-ons are even developed by Mozilla but not enabled by default, such as voice tool that lets you navigate the web by speaking rather than typing. Gif to video converter download. There’s also an active community of developers who make a wide range of extensions that can help you block ads, capture videos and expand bookmark management.

Firefox also offers excellent security, including the ability to block viruses, malware, phishing attempts and other threats. It also has an incognito mode that lets you surf privately, and this mode has no outward indication, so people looking over your shoulder won’t know. Security is kept current through automatic updates, which you can disable, and there are also numerous security options you can use to ramp up how strict the browser is with websites.

The browser is a bit slow to load the first time it loads in a current session. Modern CPUs tend to mask that slowness, but even if not, it’s likely a small price to pay for the speed you’ll experience with each page load and transition. Another potential issue is support. There’s an excellent knowledge base and a large community to lean on, but Mozilla is difficult to reach for direct support.

Mozilla Download Mac


  • Fast and stable
  • Highly customizable
  • Strong security options
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Download Mozilla Firefox 2020


  • Slow initial startup
  • Lacks a support presence