title: What is the fastest way to generate image thumbnails in Python?
body: <p>I'm building a photo gallery in Python and want to be able to quickly generate thumbnails for the high resolution images.</p>
  
  <p>What's the fastest way to generate high quality thumbnails for a variety of image sources?</p>
  
  <p>Should I be using an external library like imagemagick, or is there an efficient internal way to do this?</p>
  
  <p>The dimensions of the resized images will be (max size):</p>
  
  <pre><code>120x120
  720x720
  1600x1600
  </code></pre>
  
  <p>Quality is an issue, as I want to preserve as many of the original colors as possible and minimize compression artifacts.</p>
  
  <p>Thanks.</p>