title: Batch optimizing PDF
body: <p>I need to make PDF Files of version 1.6 or 1.7 compatible with PDF 1.4.</p>
  
  <p>I have Adobe Acrobat Professional X so I can do this with Action Wizzard but I need to do it programmatically (Command line or C# program)</p>
  
  <p>I've tried with Adobe SDK but with no success (I can't choose the version of the output)</p>
  
  <p>Anyone knows a way I can achieve this?</p>