HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Connection: close
Cache-control: max-age=0, no-cache, no-store
Accept-Ranges: bytes
Last-Modified: Wed, 03 Nov 2010 03:25:09 GMT
Server: Apache/2.2.3 (CentOS)
Date: Fri, 04 Mar 2011 03:46:05 GMT
Content-Length: 338

<html>
  <body>
    <p>mod_pagespeed will rewrite this image's source to include a content-hash.
    Note that this requires a background asynchronous fetch of the image;
    therefore the page may not be rewritten the first time.  If it isn't, wait
    a few seconds and reload.</p>

    <img src="images/Puzzle.jpg"/>
  </body>
</html>