Scalable Vector Graphics (SVG) is a family of specifications of XML-based file format for describing two-dimensional vector graphics, both static and dynamic (interactive or animated).

Scalable Vector Graphics - Filename extension: svg, .svgz

SVG images, being XML, contain many repeated fragments of text and are thus particularly suited to compression by gzip, though other compression methods may be used effectively. Once an SVG image has been compressed by gzip it may be referred to as an "SVGZ" image; with the corresponding filename extension. The resulting file may be as small as 20% of the original size.

Many modern web browsers support viewing SVG files directly in the browser with the notable exception of Internet Explorer. Firefox(http://firefox.com/), Safari (http://www.apple.com/safari/)and Opera(http://opera.com/ all support SVG). Another option is the Adobe SVG Viewer(http://www.adobe.com/svg/viewer/install/) on Mac OS and Windows.