The Configuration Editor (about:config page) in Mozilla Firefox lists settings known as preferences. Most of these preferences are advanced settings that are not present in the Options panel. Changing ...

Ever since its debut, Firefox has garnered a reputation for being an enormously customizable program, both through its add-on architecture and its internal settings. In fact, many of Firefox’s ...

If you’d like to see more tabs in your tab bar at once, set browser.tabs.tabMinWidth to something smaller than 100. The top image shows the default minimum tab width of 100 pixels; the bottom image ...

Modern software utilities often come with a labyrinth of settings underneath clean, user-optimized interfaces, and the web browsers you use are no exceptions. Some of the most popular web browsers ...

To change the Font size in Firefox Picture in Picture Mode subtitles and captions, follow these steps: Open the Mozilla Firefox web browser Navigate to about:config Go to the Preferences area for Font ...

Firefox is a very customizable browser. As well as add-ons, it has a large number of advanced settings that you can tweak, some of which enable you to do pretty useful things like stopping Firefox ...

Firefox does show which about:config changes have been set manually, but this isn’t always the most accurate way to find out what you changed. To make a backup of your preferences in Firefox, just ...