title: Create thumbnail and reduce image size
body: <p>I have very large images (jpg) and i want to write a csharp program to loop through the files and reduce the size of each image by 75%.</p>
  
  <p>I tried this:</p>
  
  <pre><code>Image thumbNail = image.GetThumbnailImage(800, 600, null, new IntPtr());
  </code></pre>
  
  <p>but the file size is still very large.</p>
  
  <p>Is there anyway to create thumbnails and have the filesize be much smaller?</p>