title: Google's page speed test thinks I should optimize my images by more than the image size currently is
body: <p>I'm really confused with this one as it seems impossible to do. </p>
  
  <p>When running my site through GTMetrix I pass great but with Google page speed insights it's insisting my images can be optimized more for instance:</p>
  
  <p>Compressing and resizing mysite.com/…ets/img/homepage/my_image.jpg could save 78.5KiB (94% reduction).</p>
  
  <p>The image in question is 65KiB so how Google thinks I can shave another 78.5 off it I don't know. </p>
  
  <p>I'm using jquery unveil and using the retina function on it too could that be the problem? </p>
  
  <p>Also I've tried downloading the images Google provides as their compressed version but these images have had their dimensions changed so would look terrible if I put them at their intended size.</p>
  
  <p>Really confused, any help would be appreciated. </p>
  
  <p>Thanks</p>