title: ITextSharp/Pdftk: place Base64 Image from Web on PDF as Pseude-Signature
body: <p>I am trying to conceptualize a way to get base64 image onto an already rendered PDF in iText. The goal is to have the PDF save to disk then reopen to apply the "signature" in the right spot. </p>
  
  <p>I haven't had any success with finding other examples online so I'm asking Stack. </p>
  
  <p>My app uses .net c#.</p>
  
  <p>Any advice on how to get started?</p>