Scalable Vector Graphics (SVG) are a type of two dimensional picture that work onvectors, rather thanpixels. This means they can become bigger or smaller without losing any quality or becoming blurry. SVG is based onXML and created by theWorld Wide Web Consortium (W3C).
The W3C published SVG in September 2001. As of 2018 SVG is widely supported in all modern browsers.[1]
The normalFilename extension is.svg and theMIME-Type isimage/svg+xml.
SVG uses Extensible Markup Language (XML). So it has a definition of the document type.
<?xml version="1.0" encoding="utf-8"?><svgxmlns="http://www.w3.org/2000/svg"xmlns:xlink="http://www.w3.org/1999/xlink"xmlns:ev="http://www.w3.org/2001/xml-events"version="1.1"baseProfile="full"width="800mm"height="600mm"><!-- content of the file --></svg>

This image shows the difference between bitmap and vectorimages. The vector image can be scaled forever, while the bitmap can not.