This online tool let you to make animation using SVG file format - SVG stands for Scalable Vector Graphics.
Scalable Vector Graphics is an XML-based vector image format for two-dimensional graphics with support for interactivity and animation. The SVG specification is an open standard developed by the World Wide Web Consortium since 1999. - Wikipedia.
The developer tell us:
SVG Circus enables you to create cool animated SVG spinners, loaders and other looped animations in seconds.