title: Display picture from AppEngine BlobStore at HTML
body: <p>I'm trying to display pictures from AppEngine BlobStore at HTML page. Because AppEngine does not expose FileSystem, i can't write:</p>
  
  <pre><code>[img src="pic.jpg"/] 
  </code></pre>
  
  <p>May be it is possible to directly access blob-bytes and display it like:</p>
  
  <pre><code>[img src="..base64 data..."/]
  </code></pre>
  
  <p>But this is very ugly way. I always thought that it is enough to use upload URL provided by AppEngine:</p>
  
  <pre><code>[img src="/serve?blob-key=AMIfv95txVuc" /] 
  </code></pre>
  
  <p>but this does not work for me [pic is not displayed]. What all i need to do to display pic, did i forgot something? thx</p>