title: FileReader vs. window.URL.createObjectURL
body: <p>I'm building a mobile website and I'd like to use the Camera API to take photos. The images should be displayed on the website and uploaded to a server. According to the <a href="https://developer.mozilla.org/en-US/docs/Web/Guide/API/Camera">introduction to the Camera API on MDN</a> the images can be accessed and displayed on the website using <code>FileReader</code> or <code>window.URL.createObjectURL</code>. I <a href="http://lab.html5test.com/files/">tested</a> these possible solutions successfully with an iPad (Safari and Chrome) and an Android tablet (Chrome and Firefox).</p>
  
  <p>What is the difference between <code>FileReader</code> and <code>window.URL.createObjectURL</code>? I think <code>window.URL.createObjectURL</code> is newer but not a standard yet. Is there a difference in the performance?</p>