How to Enable Dark Mode in Firefox Completely?

Firefox is one of the most customized browsers that support multiple functionalities for their users. Inspired by its distinctive feature support, many Linux distributions are equipped with Firefox as a default browser. In this browser, one of the features is the dark mode support of Firefox, which can be enabled to have a better experience through human eyes.

This guide will explain all possible methods to completely enable the dark mode in Firefox on Linux.

The content that illustrates this guide is as follows:

Let’s start this guide.

Method 1: Using Default Theme to Enable Dark Mode in Firefox

In the Firefox browser, the dark mode reduces the strain on the eye to consistently read the document. Using the default theme, users can permanently enable dark mode in Firefox. To do so, step-by-step guidelines are given below:

Step 1: Open Firefox Browser

Open the Firefox browser through the GUI of your system:

Or you can run firefox by utilizing the following command in the terminal:

$ firefox

Step 2: Choose “Add-ons and themes” Option

After opening the browser, hit the “three lines” operator located at the top right of the browser window. It drops down a list of multiple options; choose the “Add-ons and themes” option to access the theme window:

  Note: You can access the “Add-ons and themes” window through the “Ctrl+Shift+A” shortcut key.

It navigates to the new window to personalize the browser. In this window, select the “Theme” icon for enabling the dark mode completely:

Step 3: Enable Dark Mode

To enable the dark mode on the Firefox browser, hit the “Enable” button in the section “Dark” mode:

Step 4: Verify Dark Mode in Firefox

After enabling the dark mode, you can verify that dark mode has been applied throughout the browser:

Let’s move to the second method.

Method 2: Using General Settings to Enable Dark Mode in Firefox

Another method is considered to switch the normal window to the dark mode via “Settings”. For this, the step-by-step instructions are provided below:

Step 1: Access Settings Window 

After opening the Firefox browser, select the “Settings” option that comes from the top right “three lines” operator as seen below:

Step 2: Enable Dark Mode

It navigates to the “Settings” window on which type “Dark” in the search bar. It highlights the same content in the entire current window. Select the “Dark” scheme in the “Website appearance” section as below:

Step 3: Verify the Dark Mode in Firefox

After enabling the dark mode, you can verify that dark mode has been successfully implemented in the Firefox window:

Let’s carry out another method.

Method 3: Use the “Firefox Color” Extension to Enable Dark Mode in Firefox

An alternative method is adapted to enable the dark mode through the “Firefox Color” extension. To install this extension, step-by-step instructions are provided below:

Step 1: Access the “Add-ons and themes” Window

To install the extension, hit the “Add-ons and themes” option from the dropdown list by pressing the “three lines” operator as below:

Step 2: Search the Extensions Name

After accessing the “Add-ons and themes” window, search the “Firefox Color” that is highlighted in the below figure:

Step 3: Install Add to Firefox Extension

It navigates to the new window on which hit the “Add to Firefox” button to install this specific extension:

It requires permission to enable this extension in the “Firefox” browser. Hit the “Add” button below:

Step 4: Verify the Dark Mode Completely

Finally, you can verify that the dark mode has been completely enabled in Firefox as below:

That is all from this guide.

Conclusion

In the Firefox browser, you can enable the dark mode through the “Default Theme”, “General Settings”, and “Firefox Color” extensions. It switches the normal mode to dark mode which is quite beneficial for eyesight to consistently read and analyze content. This guide has demonstrated all possible methods for enabling the dark mode completely from normal.