I use the Google sign in javascript: https://developers.google.com/identity/sign-in/web https://developers.google.com/identity/sign-in/web There may be other

I use the Google sign in javascript: https://developers.google.com/identity/sign-in/web https://developers.google.com/identity/sign-in/web There may be other options if you want to mess with oauth yourself, but this one is pretty near zero effort.