title: Facebook messenger chatbot url preview
body: <p>I am creating a FB messenger chatbot. What is the JSON format through which while sending image URL link, it will generate a preview.</p>
  
  <p><a href="https://i.stack.imgur.com/EsDiU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EsDiU.png" alt="On the above screenshot, you can see that if I manually send a URL, FB messenger will generate the preview. Similarly if the chatbot sends an URL the messenger has to generate the preview. So my query is what is the JSON formate which will even generate the preview if I send an URL?"></a></p>
  
  <p>On the above screenshot, you can see that if I manually send an URL, FB messenger will generate the preview. Similarly if the chatbot sends an URL the messenger has to generate the preview. So my query is what is the JSON formate which will even generate the preview if I send an URL?</p>
  
  <p>Note: I dont want to send image as an attachement, as there are size limitations</p>