Mozilla has pushed out version 5.0 of Firefox for iOS to the App Store, and along with it comes a slew of new features. Chief among those are both speed and battery life improvements as well as the ability to add custom search engines to the browser. When searching for something in Firefox, you’ve long had the option of tapping the icon of an alternative engine to perform your search there. Now you can add your own custom engines by simply going to any website, putting the cursor in the website’s own search box, and then hitting Firefox’s magnifying-glass-with-a-plus-symbol icon. That’ll add it to the top of your alternatives list and you’re good to go!