FW Gallery Social Plugin adds attractive and responsive social sharing buttons next to your media files. It also adds a straightforward and easy-to-use customization section to your admin panel where you can set which social media buttons you want to display - Facebook, Twitter, Google+, Pinterest or Tumblr. 
The overall configuration process is as follows:
  • Enable FW Gallery Social Plugin via Add-ons section of your admin panel.
  • Configure plugin settings via general configuration. 

Documentation reference: FW Gallery Social Plugin tutorial.