If you’re a web developer, you’ve probably had to implement loading animations (e.g. spinners, bars) several times. In the land of ajax and back end validation, it’s essential work. Lately instead of the usual transparent GIF route, I’ve preferred implementing CSS based animation; it’s one less HTTP request and easily customizable.
Yet writing CSS based loaders can be time consuming. That’s what makes cssload.net useful. Pick an animation, color set and download the CSS3 code.