Would be nicer if the font css content got copied after click. so I can google the font name..

nice

Works well with most sites, although not all of them, such as addons.mozilla.org, where it shows the font details of the site you were on previously. Otherwise a really handy add-on.

(Would also be nice if the context menu showed size in points as well as pixels, separated line height from size, and prefixed each line with what it means, e.g. family, weight, size/line height, color.)