If you stumble onto a font which you want to adopt for your own use, the common way to find out info about that font is to use the Inspect Element option found in the Chrome browser.

Basically, while on Chrome, we highlight the text and right click to select Inspect Element. We can then see all the CSS code related to the highlighted text.There is a problem though. As you can see in the second image, the highlighted text gets styled with many selectors. To check out all of them one by one, is going to take some time.

Here is where Fontface Ninja comes in. It is a a browser extension which helps you identify a font by name. And all you have to do is hover over the font you are interested in. On top of the name of the font, Fontface Ninja also gives you the size and line spacing as well.