Cssifffy is an OS X application that will allow you to embed all your images used in CSS by drag-and-dropping the project directory onto its interface.
Cssifffy ahelps you generate base64 strings from images and easily insert them into the CSS file itself.
You should use Cssifffy because including images as strings in your design will make the website load faster with less HTTP requests.
NOTE: To buy Cssifffy via the App Store an Apple account is required.
Here are some key features of "Cssifffy":
· Supported images PNG,JPEG,GIF
· Support for images linked from other sites
· Skip images larger than defined
· 64-bit processor