One of the most common things web designers and developers do is examine how other people built their sites by looking at the code. But figuring out the typefaces used to be a bit of a pain. The WhatFont tool, created by computer science student Chengyin Liu, makes it easy. Just drag the bookmarklet onto your browser toolbar, and you’ll be able to identify all the snazzy fonts people are using these days.
It’s quite similar to the Fount bookmarklet, but you have to click on text to see the typeface (plus size, weight and style) with Fount. With WhatFont, you can just hover over text and the typeface name is displayed. If you click, you then see the font family, size, line height and color and can send out a tweet with your typographic find.