There are some other tools like e.g. FontsInfos who work much smarter because they have an overlay instead of a seperate window. Nevertheless I use this tool too, because it shows the p and h tags. That's very nice.
Simply AMAZING!! This addon is doing a Great job!! As a graphic designer it has helped me a lot!! I select/Highlight only the Text or the word I want and right click it can find me the correct font. and after I search it on Google to find free websites to download the specific font! EXCELLENT JOB guys!!! 5 stars!! :-)