Unbeknownst to many users, Firefox has a whole host of application settings (called preferences) that aren’t found under the regular Options or Preferences interface. These preferences, both hidden and not, are stored in a prefs.js file. Prefs.js is a plain text file located in the Firefox profile folder. You could edit the file using a text editor, but there’s an easier and somewhat safer way. In this IT Dojo video, I’ll show you how to access and modify Firefox’s hidden preferences using the browser’s about:config feature.

For those of you who prefer text to video, you can click the Transcript link that appears below the video player window or you can also read Jack Wallen’s article, “10 handy Firefox about:config hacks,” on which this video is based.

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