

Google Apps Script is a JavaScript cloud scripting language that provides easy ways to automate tasks across Google products and third party services and build web applications.
As we all know, on December 5, 2012 Facebook has decided to remove the offline_access
permission and has introduced a concept called long-lived
access tokens which last a maximum of 60 days.
To get Long-lived Access Token from your own Facebook Application
, This what you'll need to set up from your App Dashboard:
If you're not sure about this tool result, Use Facebook Developers Access Token Debugger to test token expiry.
This tool will check all photos tagged of you
and shows you the list of who has tagged you and how much photo they've tag you on. You may choose to un-tag all of them or only un-tag photos created by an individual friend.
By default this tool will randomly use one of three apps ids, Nokia, Causes and Facebook for Android. You may use another apps but it will not be guaranteed to succeed in the process, so try and try again until you get bored :P
As usual, to get an access token simply click on get token button, grant the firmissions, copy the full URL
from the last dialog window and paste it on your forehead
XD lol.