Firebase Authentication

Secure and scalable user authentication for your apps

About Firebase Authentication

Firebase Authentication provides backend services, SDKs, and UI libraries to authenticate users with email, phone, social logins, and more. It integrates seamlessly with Firebase services and supports industry standards like OAuth 2.0 and OpenID Connect. Upgrade to Identity Platform for advanced features like multi-factor authentication, SAML support, and enterprise-grade security.

Pricing

Full pricing page

Freemium Free option

Spark plan

$0 per month

Generous no-cost usage limits, no payment method needed

A/B Testing
Analytics
App Check
App Distribution
Cloud Messaging (FCM)
Crashlytics
In-App Messaging
Performance Monitoring
Remote Config

Blaze plan

Custom

Pay as you go, access more services and higher usage levels

No-cost usage from Spark plan included
Fees based on usage volume

FAQ

Alternatives to consider

Community ratings & full list

JSON Web Token

JSON Web Tokens (JWT) provide a secure, open-standard way to transmit claims between parties using RFC 7519.

Badges

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Color

Monochrome

Dark

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Pricing summary

Model

Freemium

Free tier available

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