title: automatically cropping image on upload
body: <p>I have some upload form for images. I want to crop images automatically. And on submit save cropped images.</p>
  
  <pre><code>&lt;input type="file" id="file" name="files[]" multiple/&gt;
  </code></pre>
  
  <p>I want to crop image:
  example 800x600,  but from center of image, not from corners.</p>