title: Link to download image instead of view image
body: <p>I need to provide website visitors a link to download an original high resolution image.  If I simply link to the image with a href="image.jpg", the browser displays the image.  How do I make the browser download it?</p>
  
  <p>I'm using amazon S3 to server these images... If this requires having a special header set on the image, I'm sure it's possible.. but I also want to display these images sometimes.  Any tips on making this work with S3 would be great.</p>