title: Tool to batch convert android resource bitmaps to different densities
body: <p>I need to post-release support different display densities on Android</p>
  
  <p>During development <strong>drawable-hdpi</strong> has grown to 160 png (like 20 of them 9 patch) assets</p>
  
  <p>I now need to convert all those bitmaps to <strong>mdpi, ldpi</strong> (layouts and drawables XML are already fine, <strong>to avoid raising OOM on LayoutInflater</strong></p>
  
  <p>Is there any tool suitable to convert all those bitmaps in batch ?  </p>