How To Install FireFox on Mac

Published: July 20, 2019 (Updated: Jul 20, 2019)

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Ditch Safari (For a Minute): The Quickest Way to Download and Install Mozilla Firefox on Your Mac

Welcome back to Darren’s Tech Tutorials!

If you’ve ever used a Mac, you know that Apple provides its own excellent web browser, Safari, pre-installed and ready to go. But sometimes, we need alternatives—whether it’s for advanced privacy features, specialized developer tools, or just a different user experience.

Mozilla Firefox is one of the most popular and reliable alternative browsers available today, known for its commitment to speed and user privacy.

In this quick, straightforward guide, we’re going to walk through the essential steps needed to get this powerful browser running seamlessly on your Mac OS machine. Let’s get started!


Why Choose Firefox?

Before we dive into the installation process, it’s worth noting that using multiple browsers is a smart digital habit. Firefox is frequently praised for its robust privacy controls, excellent customization options, and strong performance, making it a powerful contender against Chrome and Safari.

Here is the simple, three-step process we will cover:

  1. Downloading the official Firefox installer file.
  2. Installing the application using the standard Mac drag-and-drop method.
  3. Launching Firefox for the very first time.

Downloading the Firefox Installer File

Since Firefox isn’t pre-installed on Mac OS, our first step is to use your existing browser (likely Safari) to retrieve the official installer.

Step 1: Open Your Current Web Browser

Launch Safari or any other browser you currently have access to on your Mac.

Step 2: Navigate to the Official Mozilla Website

It is critical for security that you download software only from official sources. In your browser’s address bar, type: mozilla.org/firefox or simply search for “Download Firefox.”

Step 3: Initiate the Download

Look for the prominent “Download Firefox” button on the official homepage.

  • Click the button. The website should automatically detect that you are running Mac OS and provide the correct .dmg (Disk Image) file for your operating system.
  • Once the download is complete, the file—usually named something like Firefox.dmg—will appear in your Downloads folder (or in the download manager window of your browser).

Installing Firefox on Mac OS

Unlike Windows, Mac installations are usually straightforward drag-and-drop actions. This is often done by mounting a disk image (.dmg file) and moving the application icon into the dedicated Applications folder.

Step 4: Locate and Open the Disk Image

Open your Finder and navigate to your Downloads folder. Double-click the Firefox.dmg file you just downloaded.

  • This action will mount the disk image, and a new window will pop up showing the installation prompt.

Step 5: Drag Firefox to Applications

The installation window will typically display two icons: the Firefox application icon and the Mac Applications folder shortcut.

  • Click and hold the Firefox icon.
  • Drag the icon directly into the Applications folder shortcut (or into your actual Applications folder via the Finder sidebar).
  • Mac OS will copy the necessary files. Wait for this copy process to complete.

Step 6: Clean Up the Installer (Eject)

Once the files are copied, you should see the Firefox application listed in your Applications folder.

  • To finish the process, you need to “eject” the disk image. You can do this by clicking the “Eject” icon next to the mounted Firefox disk image in the Finder sidebar, or by dragging the mounted disk image icon from your desktop into the Trash/Eject icon.
  • You can now safely delete the original Firefox.dmg file from your Downloads folder to save space.

Launching and Verifying Your New Browser

You are now ready to start using Firefox!

Step 7: Launch Firefox

There are two primary ways to launch your newly installed application:

  1. Via Launchpad: Open Launchpad and find the new Firefox icon.
  2. Via Finder: Open your Applications folder and double-click the Firefox application icon.

Step 8: Handle the Security Prompt

The very first time you launch any application downloaded outside of the Mac App Store, Mac OS will present a security dialog asking: “Firefox is an app downloaded from the Internet. Are you sure you want to open it?”

  • Click Open.

Firefox will now launch, and you’ll be greeted with its welcome screen. You can now begin customizing your bookmarks, setting up your preferred home page, and enjoying a new, speedy browsing experience!


Ready to Browse Smarter?

And just like that, you have successfully downloaded and installed Mozilla Firefox on your Mac OS machine!

Whether you need it for specific web development tasks, managing multiple logged-in accounts, or simply exploring a browser built with a heavy focus on user privacy, Firefox is an excellent addition to your software toolkit.

Give it a spin and explore its advanced customization options!

If this tutorial helped you get up and running, please give this post a thumbs-up and consider subscribing to Darren’s Tech Tutorials for more quick, clear, and actionable technology guides! Happy browsing!