libxml2/test/SVG/image-valid.xml

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG April 1999//EN" 
  "http://www.w3.org/Graphics/SVG/svg-19990412.dtd">
<svg width="4in" height="3in">
  <desc>This graphic links to an external image
  </desc>
  <image x="200" y="200" style="width: 100px; height: 100px" 
  href="myimage.png">
    <title>My image</title>
  </image>
</svg>