title: Best way to crop and upload image with express?
body: <p>i upload image on S3 server with <a href="https://github.com/LearnBoost/knox" rel="noreferrer">knox</a> on express.</p>
  
  <p>I would like user could crop the image for this profile picture (like on facebook)</p>
  
  <p>I heard about <a href="https://github.com/tapmodo/Jcrop" rel="noreferrer">Jcrop</a> for the user interface and <a href="http://imagemagick.org" rel="noreferrer">imagemagick</a> for the server.
  For you, what is the best way to do that ?</p>
  
  <p><em>Sorry for my bad english.</em></p>