<html>
<body>
  <!-- This image scales uniformly, preserving its aspect ratio, to be
       600x600.  Though the SVG content doesn't have a viewBox, we behave as if
       it did when it's used as an image, since it has non-percent-valued
       height and width attributes on the root svg node. -->
  <img src="squaredCircle-100x100.svg" width="600px">
</body>
</html>