Scalable Vector Graphics (SVG) files are a type of vector graphics image file. They use the XML format to define shapes and colours.
As a vector graphic it is a scalable (set to any size) alternative to JPEG, GIF and PNG bitmap formats.
SVG images can be both, static or animated and are seen as an open standard alternative to Flash (Adobe) and Silverlight (Microsoft).
The format has been held back by the web browser Internet Explorer not supporting the file format until version 9.