title: How to add image options: cropping, resizing, etc. to http image file
body: <p>I would like to know how do I add image options the image size on request. I have seen something like:</p>
  
  <pre><code>                        http://exampleimage.png?w=120&amp;h=200
  </code></pre>
  
  <p>Sometimes they even add options to crop, zoom, etc. Thanks in advance.</p>