Simple, multi-platform sign-in

Provides backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app.

Easy sign-in with any platform

Firebase Authentication aims to make building secure authentication systems easy, while improving the sign-in and onboarding experience for app users. It provides an end-to-end identity solution, supporting email and password accounts, phone auth, Google, Apple, X, Facebook, GitHub login, and more.

Illustration of example U.I.

Flexible, drop-in UI

FirebaseUI provides a customizable, open source, drop-in auth solution that handles the UI flows for signing in users. The FirebaseUI Auth component implements best practices for authentication on mobile devices and websites, which can maximize sign-in and sign-up conversion for your app.

Comprehensive security

Built by the same team that developed Google Sign-in, Smart Lock and Chrome Password Manager, Authentication securely applies Google's internal expertise of managing one of the largest account databases in the world.

Illustration of comprehensive security
Illustration of mobile device

Fast implementation

It can take months to set up your own authentication system, and it requires an engineering team to maintain that system in the future. You can set up the entire authentication system of your app, capable of handling even complex cases like account merging, in under 10 lines of code.

Documentation

Learn more about Authentication through our documentation.

Pricing

Understand your charges and estimate your invoice on the pricing page.