IMPORTANT! =========== The Icon Picker does NOT include the actual icon fonts! Why? You may already have them, depending on your WordPress set-up, or you can go get the latest versions of the fonts from their respective project pages: Dashicons- comes with WordPress 3.8+ and is used for the new Admin UI. Or get it here: https://github.com/melchoyce/dashicons Genericons - came with the WordPress default theme "Twenty Thirteen" or get it by itself here: http://genericons.com/#menu Font Awesome - a popular icon font with WordPress theme designers. You can download it here: http://fortawesome.github.io/Font-Awesome/ Once you have the fonts put them in the ~wp-content/plugins/icon-picker/fonts/ folder then enqueue them properly for both the Admin area and for the front-end of your site (see the sample plugin php code for how to do that).