In facebook, when you share a link, a neat little preview is created with an image headline, and text excerpt. Here’s an example..
After a bit of Googling I found this for you.
It should take you through the steps on how to create something similar to Facebook share previews.
Embedly provides a powerful API to convert standard URLs into embedded videos, images, and rich article previews.I Searched and found an easy way to do it.
Just make a Get request to http://api.embed.ly/1/oembed?url=YOUR-URL . You will find everything in json Format.
Have a look at bootstrap-linkpreview js library as well. It should fit exactly your needs.