I tryed your app "G-Form Tools - Create Autofill Google Form Links" to reduce the time spent answering boring surveys from school. It looked cool app. but It cannot create links for forms that require login.This app can be more convenient. I think you can use iflame and show the form user typed. Then prompt users to login with their password. After login, the form will be shown and your app can read form's HTML. This app will be popular with Japanese students like me.