Sign In with Google SDKs
Users signed into Google on their device or browser get expedited authentication on your app or site.
Returning users sign in automatically or with one tap or click.
Create new accounts with a single tap and get assisted signed-in across devices.
Also works with passwords: securely store and retrieve username/password credentials.
Open source and industry standard authentication.
Passkeys 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 authorization.
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
Add a trusted and secure Sign In With Google button to your app.
Users sign-in to a Google account to use when visiting your site or using your app.
Google maintains the account for your users; your app uses their Google account instead of creating and maintaining new accounts on your domain.