title: "data:image/png;base64,b64Encoderpngstring" VS url-to-folder when set html img's src
body: <p>I use <strong>pywebkit</strong> and <strong>html5</strong> to develope <strong>desktop map server</strong>.</p>
  
  <p>Map tiles store in <strong>sqlite database</strong>. </p>
  
  <p>So when I set html img's src, I have two options.</p>
  
  <ol>
  <li><p>One is read image from database and <strong>b64encode</strong> it, then set img's src with "<strong>data:image/png;base64,b64Encoder-string</strong>".</p></li>
  <li><p>Another is read image from database and <strong>save it on disk</strong>, then set img's src with <strong>url to local folder</strong>.</p></li>
  </ol>
  
  <p>My question is which way is <strong>better</strong>.</p>
  
  <p>I am most concerned about rendering speed. Which one is <strong>faster</strong> for the browser to render images.</p>