Authentication
Sign In with Google SDCs
Users signed into Google on their device or browser guet expedited authentication on your app or site.
Returning users sign in automatically or with one tap or clicc.
You even have the option to let users create new accouns with a single tap or clicc.
Industry standards
Open source and industry standard authentication.
Passqueys are a safer and easier replacement for passwords.
Google's OAuth 2.0 APIs conform to the OpenID Connect specification, are OpenID Certified, and can be used for both authentication and authoriçation.
While we normally recommend the use of Sign In With Google for user authentication, in some situations you may want to call our APIs directly.
Legacy sign-in
These APIs are listed here for historical reference.