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 ...

Windows/Mac/Linux (Firefox): The Configuration Mania Firefox extension provides a GUI menu for tweaking Firefox's about:config settings. That means that rather than typing about:config in your address ...

The Firefox Web browser, built by the Mozilla Foundation and friends is a complicated piece of technology—if you care to look under the hood. It's not obvious where the hood catch is, because the ...

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 ...

Google Chrome & Mozilla Firefox browser includes a Developer Settings page, which contains numerous flags, which you can enable or disable. Most of the settings here are meant for advanced users and ...

Update: The about:config ninjas in our comments inform us that there's a much easier way to get this done than we originally recommended.

FireFox about:config stores the browser configurations. To access them , simply enter about:config in the address bar and hit “Enter”. Last week I shared a quick tip on tweaking FireFox spell checking ...