There are thousands of Firefox add-ons. Did we test them all? Nope! But, these 12 are the ones you need to make the most of your Web browsing.
5 of 12
Hyperwords lets you conduct queries and operations on any selected word on a Web page. It's far easier than copying and pasting, or typing, words into Google. And it's not just for search queries; it handles measurement conversions, translations, and sharing.