At first it may sound strange for a designer to keep their icons in a font file, let alone use them Online. CSS3 and @font-face are just now emerging as a viable option for display and text fonts, so why depend on it more for icons as well?
The thing is, pictograph and icons packed into a font file are already a very reasonable way to keep track of an entire series of graphics. All you need to do is install the font for safe keeping, start typing and you’ll automatically have access to scalable icons straight from your system’s font library. Now, with CSS3, we can style them in tons of impressive ways Online with little effort.
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According to the creator:
The entire purpose of using icon fonts is to replace the need to render icons on a web page using images. Icons fonts can be styled dynamically using CSS. They are smaller in file size than an image sprite. Being vector in nature, they are infinitely scaleable.
If your interest is peaked, you’ll want to check out the guide to using the font, as well as the explanations for accessibility and compatibility problems.
There are definitely issues involved in the process. If you rely on the font for all of your navigation and your site is viewed in an incompatible browser, your entire site is doomed. The service also costs $19+ per year, and you could instead use other fonts like Modern Pictograms or IcoMoon for free with the @font-face tag, but you’d have to host that yourself.
All in all, this is definitely worth the experiment. If you feel like living on the edge then go for it. Icon fonts may be the way of the future, along with actual CSS drawings. If you’re stuck supporting old versions of IE, then you’ll unfortunately have to stick with images for now, but otherwise, why not give it a try?