Firefox Logo

If you bought a new Mac, or if you’re wanting to switch to Firefox from a different browser like Safari or Chrome, you can easily set it as the default. Here’s how to set Mozilla Firefox as the default browser on Mac.

Before you get started, make sure you’ve downloaded and installed Firefox for Mac. If the browser isn’t installed on your device, you will not be able to set it as the default browser.

Set Firefox as the Default Browser from Your Mac

To set Firefox as the default browser from your Mac, head over to the System Preferences menu. You can open System Preferences by selecting the “Gear” icon in the Mac toolbar.

RELATED: How to Make Chrome Your Default Browser

Alternatively, click on the Apple logo in the top-left corner of your Mac’s display and select the “System Preferences” option.

The “System Preferences” window will appear. Here, select “General.”

General option in system preferences

The “General” window will now appear. Look for the “Default Web Browser” section in the bottom half of the window. Here, select the arrow next to the browser name in the box.

arrow to select default browser

Choose “Firefox” from the list that appears.

Firefox option in default browser list

Firefox is now set as the default browser.

Set Firefox as the Default Browser from Firefox

You can also set Firefox as the default browser from the browser itself. To do this, launch Firefox and then select “Firefox” in the header menu.

Firefox option in mac header

Once selected, a menu will appear. Here, select “Preferences.”

Firefox preferences

Alternatively, you can enter about:preferences in the browser’s address bar.

Now you’ll be in the “General” tab of the system preferences. In the “Startup” section, you’ll see a note that says “Firefox is not your Default Browser.” Select “Make Default” next to the note.

Make default button

A message will appear asking if you’re sure you’d like to make the change, or if you’d prefer to keep your current browser as the default. Select “Use Firefox.”

use firefox confirmation button

Firefox is now set as the default browser.

Profile Photo for Marshall Gunnell Marshall Gunnell
Marshall is a writer with experience in the data storage industry. He worked at Synology, and most recently as CMO and technical staff writer at StorageReview. He's currently an API/Software Technical Writer based in Tokyo, Japan, runs VGKAMI and ITEnterpriser, and spends what little free time he has learning Japanese.
Read Full Bio »