About:Config – How to Use Configuration Editor for Firefox

About:Config – How to Use Configuration Editor for Firefox

/ Sed Galope

How does Configuration Editor affect Firefox Performance?

Configuration Editor is a tool that lets you change Firefox web page settings.

Configuration Editor can affect performance by changing the amount of memory Firefox uses. You can use Configuration Editor to change the amount of memory Firefox uses for different purposes, like browsing history or cache and resetting it to its default value. If you have many tabs open or visit many websites, you may need to increase the amount of memory Firefox uses as an added preference.

Configuration Editor can also affect performance by changing how Firefox connects to websites. You can use Configuration Editor to change the number of connections Firefox makes to a website and the time it waits before trying again if a website is unavailable. If you have problems connecting to websites, try changing these settings.

Opening About:Config

Like chrome, Firefox is an open-source web browser with a cleaner user interface and faster downloading speed. The page containing settings related to the browser is called about:config showing preferences for the Firefox user profile. These settings are usually not available in the settings menu of the device. So here is how you can open the about:config page.

Step 1: Launch Firefox from the device’s main menu.

Step 2: In the Firefox window, type about:config in the browser’s address bar and click enter to continue.

about config firefox command

Step 3: In the next step, accept the warning, i.e., accept the risk and continue. It will launch the about:config page.

accept risk and continue

Step 4: In the about:config page, click show all to check all preferences or type the particular name in the search preference name search bar.

firefox advanced preference

Searching For Preferences

Firefox about: config page carries information about preferences associated with the web browser settings. Modifying preferences usually consists of the default menu for checking the update history, update settings, customization, performance settings, scroll settings, browser settings, and searching in the browser.

Each function carries a particular set of preference settings. Here is how you can access the preferences from the about:config page.

Step 1: Launch Firefox, and in the search bar of the browser, type about:config. Click enter to continue. Click accept the risk and continue.

about config firefox command

Step 2: In about:config menu, click the show all button to check all preferences in the list.

show all about config

Step 3: For launching a particular preference, type the name of it in the search preference name search box. Click enter to continue.

search preference name

Step 4: If a particular preference does not exist in the default list, type the name of the preference setting in the search bar and click add to add it to the list of new preferences.

Modifying About: Config Settings Preferences

With a user-friendly interface, Firefox allows you to modify the preferences and configure the program according to the user’s desire and advanced settings. Modifying these advanced preferences is quite an easy task. It also helps fix the errors and issues linked to a particular program. Here is how you can modify the preference via about:config page.

Step 1: Launch Firefox and type about:config in the address bar. Press enter to continue.

Step 2: In the context menu, select the targeted preference. Double-click the preference to select the option of modify from the list.

about config modify option

Step 3: To modify the Boolean preference, click the toggle button to select true or false.

Step 4: To modify string preference (text), click the edit button to change the value. Once the value is changed, check the box before it to save changes.

modify string preference

 Resetting or Deleting Preferences

Like modification, preferences can also be reset and deleted permanently from the list. If the program linked to a particular preference is showing up functionality error and not launching according to the preferred settings, then resetting or deleting the preferences can serve the purpose. Here are the steps to follow for resetting and deleting the preferences.

Step 1: Launch about:config page from the Firefox browser page.

Step 2: In the about: config menu, select the particular preference. Click the preference, followed by clicking the reset button. You can also right-click the preference for selecting the reset button from the drop-down menu. It will reset the values to default.

reset particular preference

Step 3: To delete the preference, click the one followed by the delete button.  The system-specific preferences, if deleted, would be added back with compatible preference settings.

reset to compaitble preference

Adding New Preferences

Firefox not only works with default preferences rather one can add new preferences for any program in the browser. Here is how you can add the new preference to the about:config page of Firefox.

Step 1: Launch Firefox browser and type about:config in the browser search bar. Click enter to continue.

Step 2: In the about:config menu, type the preference name to be added to the list in the search preference name.

search preference name

Step 3: Select the type of preference from Boolean, number, and string options under new in the drop-down list.

new string

Step 4: Once set, click add to enable the preference settings to the list. Refresh the Firefox browser and use the program to check if the preference settings are working.

Frequently Asked Questions About “About:config”

Why Can’t I Use the Configuration Editor in Firefox?

If you are having difficulty accessing the configuration editor on Firefox, go to the troubleshooting information page from your home screen. From there, follow the steps provided that will show you how to reset the Firefox settings properly.

Sed Galope
Meet the author

Sedfrey is an experienced writer and editor. He's also a PC hardware and gaming enthusiast. In his spare time, he enjoys reading about the latest innovations in the PC market and finding fixes to hardware and software errors.