ConfigFox unlocks advanced setting configurations within the about:config section of Firefox making management of those settings easy by providing a more user friendly UI.
Those settings are unchecked by default, they can be checked or modified accordingly to your needs. Only checked entries will get into effect for your profile. You can easily search config items simply by typing it in the search box. The search must have at least 3 characters to begin.
Navigate among search results by pressing PgUp | PgDown
ConfigFox Features and Tools:
Quickly create and customize Firefox profiles.
Easily enable/disable settings with one click.
Quickly search Config entries.
Updates for new Config entries.
Backup, Defrag and Vacuum profiles for a faster performance.
Get profile statistics.
Search online for Config strings.
Vacuum: clean .sqlite files in your profile folder reducing file size.
Defrag: defrag the profile folder for a better performance (HDD only).
Backup: compress the whole profile into backup.zip inside the profile folder.