title: Facebook sharing images from an iOS app
body: <p>I am having an issue with sharing an image on Facebook, from an iOS app.
  (<a href="https://stackoverflow.com/questions/36594505/trying-to-share-an-image-on-facebook-from-an-ios-app">See this post</a>)
  I read that it was against Facebook policy to prefill text before sharing.
  Is it also contrary to their policy to prefill an image?</p>
  
  <p>I can understand that prefilling can lead to possible exagerations. But in an app dealing with pictures, if I cannot make it easy for the user to share his picture by preloading it; what could be the point of having a FB button in my app?</p>