title: WebView load images asynchronously from Database
body: <p>I would like to load images referenced in HTML asynchronously from my local Database.</p>
  
  <p>Right now all I can do is to replace the <code>abc.jpg</code> part of <code>&lt;img src="abc.jpg"&gt;</code> by <code>data:image/jpg;base64, img_base64_string&gt;</code>, but this has to be done before the HTML get's rendered. I would like to show the HTML page as fast as possible and then load the images.</p>
  
  <ul>
  <li>How to trigger a loading event to load an image from the DB?</li>
  <li>How to correctly set the loaded image in HTML without converting it to base64?</li>
  </ul>