I\'m now working on a web application which is mostly based of facebook graph api. I hold some data about users - actually , the possible public data available - such as nam
Here, this api allows you to get fb, google and twitter profile pics easily
https://www.avatars.io/
It's an API that returns the profile image when given a username for a variety of social networks including Twitter, Facebook, Instagram, and gravatar. It has libraries for iOS, Android, Ruby, Node, PHP, Python, and JavaScript.