Firefox may be your default browser, but that doesn’t mean you really use it to its full potential. Mozilla’s browser is a big threat to Microsoft not because it’s fast and full of unique features, but because it’s also extremely customizable. Add-ons, style scripts, and hidden preferences let you personalize your Firefox experience to meet your tastes and needs. Sure, you may know about hidden easter eggs like the about:robots page, but we’re going show you the 20 most essential tips, tricks, and tweaks to this super browser.

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