title: How to clear BLOB created at the time of HTML5 FileReader calls
body: <p>I am seeing BLOBs created at the time of reading JPEG image file from local system through <strong>FilreReader</strong> using <strong>readAsDataURL</strong> API are not cleared out from memory in mobile Safari till page reload. </p>
  
  <p>I have tried clearing objects by setting to null and clearing all the references.</p>
  
  <pre><code>var reader = new FileReader(); 
  reader.onloadend  = function(event) {
     var img = new Image();
     img.src = this.value;
     ....
  }
  reader.readAsDataURL(referanceToFile);
  </code></pre>
  
  <p>When try to submit large images browser is crashing consistently.  Please share your thoughts and suggestions if anyone experienced same or similar issue.</p>
  
  <p>Thanks in advance</p>