<!DOCTYPE html>
<html>
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <title>test 773
      </title>
   </head>
   <body>
      <img src="foo.jpg" id="test" alt="test" aria-describedby="t1">
      <div id="t1" style="visibility:hidden">foo</div>
   </body>
</html>