Hi, can you elaborate on the word "Detect" here, since you mentioned "without user authentication" there must be something i don't get, what type of user authentication you mean? that's impossible! if there will be a form where user enter the URL and they get those data back that's fairly easy, but without any authentication, no, it's not like Facebook will share their cookies with you (your domain) in case of Facebook, and about Google, Youtube share* count suppose you can get this which you can't, the user doesn't have to have a youtube channel every time... just saying you're project needs more information please add more details because i know i can do it IF THERE WILL BE A FORM! i can get the Google counts using API