title: Annotate - Image document - C#
body: <p>I have the following requirement</p>
  
  <ul>
  <li>Need to provide Annotate toolbar while viewing images documents ( TIFF, PDF...) to user</li>
  <li>User can update, erase text and add comment in image document and save the document. </li>
  </ul>
  
  <p>I am looking for a free SDK to do this in C#.</p>