The easiest way to find the font name used in a webpage is using this extension, With this extension, you could inspect web fonts by just hovering on them. It is that simple and elegant. It also detects the services used for serving web fonts. Supports Typekit and Google Font API. Recommended by Wired WebMonkey, Lifehacker, and SwissMiss.
To embrace the new web font era, WhatFont also detects services used for serving the font. Now supports Typekit and Google Font API.
How To Use It?
Install the extension from Chrome Web Store. On any webpage, click WhatFont button at the top right corner of your website to use the tool, Then after Using the Tool, you can click on the button to Exit.