Why "application/x-www-form-urlencoded" is normally used for login but not for registration?

I may be wrong, but for security reasons, in REST APIs the login credentials are always sent with the content type application/x-www-form-urlencoded. But I haven’t seen the same with user registration; the data is normally sent as JSON. Wh… Continue reading Why "application/x-www-form-urlencoded" is normally used for login but not for registration?