How to Know the up loader of any image downloaded from Facebook

        -    Photos downloaded from Facebook has naming convention like

               10553866_683772571716631_1387821185946217935_o.jpg

-          Now if you want to go to the profile of the owner of the downloaded photo, just copy the number between first underscore and second underscore, so the number is

              683772571716631

 

-          Now, go to  http://www.facebook.com/68377257... and you landed at the page of the picture on Facebook.