Instant Sprite: A fast browser-based CSS Sprite Generator. Uses HTML Canvas and JavaScript FileReader to generate CSS Sprites as quickly as possible. Instant Sprite is open source under MIT License. See LICENSE. Makes use of many open source components: jQuery - http://jquery.com/ jQuery UI/Sortable - http://jqueryui.com/ RequireJS - http://requirejs.org/ filereader.js - http://github.com/bgrins/filereader.js jquery-tmpl - http://github.com/jquery/jquery-tmpl famfamfam silk icons - http://code.google.com/p/famfamfam/wiki/silk_icons_gif