SVG images are defined in a vector graphics format and stored in XML text files. SVG images can thus be scaled in size without loss of quality, and SVG files can be searched, indexed, scripted, and compressed. The XML text files can be created and edited with text editors or vector graphics editors, and are rendered by most web browsers.
Svg (Scalable Vector Graphics) is an XML-based vector image format for two-dimensional graphics. The advantage is that you can modify image size without losing quality and detail.