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Enable Dark Mode in the Firefox browser

Are you trying to enable and switch to Dark Mode on your Firefox browser for your computer and mobile? Learn how to enable darker browsing mode on your website.

The Firefox browser offers great customization options within its settings. It allows you to choose between Dark or Light mode themes, or you can download and install any color theme from the themes and add-on store to apply.

You can also customize the website’s appearance and manage color options.

Enable Dark Mode in Firefox browser

In this guide, we have shared the steps to enable the dark mode in Mozilla Firefox on the computer.

Enabling the Dark Theme in Firefox on a Computer

The Firefox browser has all the options present very conveniently. There is a built-in option to turn on dark mode. You can also use the browser add-ons to change to any color. To enable the dark mode, you need to:

  1. Open the Firefox browser on the computer.
  2. Click on the More horizontal 3-bar icon menu for options and select the Add-Ons and Themes menu.
    Add-ons and theme menu in Firefox computer browser
  3. Switch to the Themes tab from the left sidebar.
    It will display the Light, Dark, and other system default themes.
  4. Click on the Enable button for the Dark theme.
    Enable the Dark Mode theme on Firefox browser on computer
  5. The Dark theme will be activated on the browser.

You can scroll down and click the Find more theme button to check more theme and color options for personalization.

Find more themes on Firefox computer for personalization

It will open the Mozilla Add-ons gallery to choose the color theme from third-party developers.

Enabling the Dark Theme for Website Content in Firefox on the Computer

When we choose the theme to dark mode, it will just change the browser’s color. However, Firefox also offers an option to change the website’s appearance. The option is currently available for computers only. Here are the steps to follow:

  1. Open the Firefox browser.
  2. Select the Settings menu from the More horizontal 3-bar icon options.
  3. Scroll down to the Language and Appearance section.
  4. Switch the Website appearance settings to the Dark option.
    Dark Website appearance settings in Firefox browser

The change in website appearance only happens if the site offers a color-switching option to choose between dark and light modes.

Here is an example of BrowserHow after switching the website appearance to Dark mode:

There is also an option to Override the website colors to choose the browser default using the Manage colors button under the Colors section.

Colors option in Firefox for website appearance customization

Enabling the Dark Theme for Firefox on Smartphone

The Firefox dark mode is available on your Android and iPhones as well. You can easily switch between the light and dark themes from Settings menu. The steps are as follows:

  1. Open the Firefox browser on your Android phone.
  2. Tap on the More vertical 3-dots icon menu and select the Settings menu.
    Firefox Settings menu under More options
  3. Open the Customize settings to visit the Theme section.
    Customize Settings in Firefox for AndroidIt will display three options: Light, Dark, and Follow device theme.
  4. Select the Dark option to switch to the dark theme.
    Dark Theme mode selected in Firefox for Android Customize settings

A dark theme will be active across the browser UI and will make it easier to browse the net on the browser. You can also choose the Follow device theme option if your device has a system-wide dark mode.

Similarly, enable it on your iPhone device from Firefox Settings under the Themes menu. The settings menu is almost similar between Android and iOS devices.

Bottom Line

The Dark mode works well for both computers and mobile phones. It is available on both Windows and Mac devices. It can change your browser’s look and feel to make it comfortable.

You can choose from various themes and colors apart from the dark mode. However, the dark mode makes the eyes less strained than the light theme screen. It also consumes less power hence enhancing the device’s battery life.

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Kushal Azza

Kushal Azza

Kushal Azza is a Google Certified IT Professional, Digital Content Creator, and Go-To Digital Marketer with Engineering Degree. He has over a decade of experience solving tech problems, troubleshooting, and innovating digital solutions. Follow him on Twitter and LinkedIn.

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