“What’s the simplest method of determining the fonts used on web pages? Firebug as well as Webkit Inspector are easy enough to use by developers. However, for other users it’s not required. By using this plugin, users can examine web fonts by simply hovering over them. It’s as simple and elegant. It also recognizes the service used for providing web fonts. Supports Type kit and Google Font API.
Recommended by Wired Web Monkey, Lifehacker, and Swiss Miss.