title: How to check whether the images are from cache
body: <p>How to check whether the images are from cache or from server. Since my home page contains 45 images. When I press <kbd>F5</kbd>, want to know whether the images are from cache or from server.</p>
  
  <p>I had added  <code>&lt;%@ OutputCache Duration='120' Location='Client' VaryByParam='none' %&gt;</code></p>