We can use this CSS Compressor made by CSS Drive to compress the CSS to increase loading speed and save on bandwidth as well. You can choose from three levels of compression, depending on how legible you want the compressed CSS to be versus degree of compression. The “Normal” mode should work well in most cases, creating a good balance between the two. It can also strip all of your comments automatically as well. However, I suggest that you keep your original CSS file, it can make your life much easier if you need to edit your CSS file.

Requirements: No Requirements
Demo: http://www.cssdrive.com/index.php/main/csscompressor/
License: License Free