Online articles will suggest you to try tweaking the about:config in Firefox and making tweaks there.
However, not many know what about:config is or how to open it let alone tweak it.
ConfigFox has done a great job by organizing all the options inside a few folders.
ConfigFox also comes with the ability to backup your Firefox configs and restore them at any point.
It also has a option to clean the Firefox database if you feel you have messed up the tweaks.
you’ve got the option to download ConfigFox fromhere.
source: www.techworm.net