title: Facebook Share Data URI Image
body: <p>I have an application where users can interactively design elements on a HTML5 canvas. I would like to share the canvas image via Facebook.</p>
  
  <p>I was planning on creating a dynamic page and pass in a Data URI but Facebook does not accept a Data URI image and requires an absolute image path.</p>
  
  <p>I really don't want to head down the path of storing the image on server, even temporarily, but I am afraid that this is my only option? Is there another avenue I should be researching?</p>