In addition to the default ThemeRoller icon set, the PrimeFaces team provided and supported a set of alternative icons named the Font Awesome iconic font and CSS framework. Originally, it was designed for the Twitter Bootstrap frontend framework. Currently, it works well with all frameworks. The official site for the Font Awesome toolkit is http://fortawesome.github.io/Font-Awesome/.
The features of Font Awesome that make it a powerful iconic font and CSS toolkit are as follows: