Auth.js vs Firebase Authentication
Learn how Auth.js and Firebase Authentication differ in their key features like authentication, enterprise auth, security, user management and compliance, so you can decide which of these authentication providers is best for you.
Auth.js
Feature Comparison
Firebase Authentication offers broader feature coverage than Auth.js, supporting 25 features compared to 16. Firebase Authentication fully covers branding.
Auth.js comes with over 80 preconfigured OAuth providers (Google, GitHub, Twitter, Facebook, etc.) so users can sign in with existing accounts
Session settings allow adjusting `session.maxAge` and `updateAge` to control how long sessions last; default expiry is 30 days but can be configured for longer durations
Email templates and FirebaseUI can be localized; set the language with a `languageCode` property or override CSS for more than 40 languages
| Auth.js | Firebase Authentication | |
|---|---|---|
Auth.js comes with over 80 preconfigured OAuth providers (Google, GitHub, Twitter, Facebook, etc.) so users can sign in with existing accounts | ||
Session settings allow adjusting `session.maxAge` and `updateAge` to control how long sessions last; default expiry is 30 days but can be configured for longer durations | ||
Email templates and FirebaseUI can be localized; set the language with a `languageCode` property or override CSS for more than 40 languages | ||
Compliance Comparison
Firebase Authentication offers significantly broader coverage than Auth.js, supporting 6 certifications and regulatory frameworks compared to 0 for Auth.js. Since Auth.js is open source and does not include compliance certifications, you’ll need to manage compliance yourself.
CCPACompliant
GDPRCompliant
ISO 27001Certified
ISO 27017Certified
ISO 27018Certified
SOC2Compliant| Compliance | Auth.js | Firebase Authentication |
|---|---|---|
| CCPACompliant | ||
| GDPRCompliant | ||
| ISO 27001Certified | ||
| ISO 27017Certified | ||
| ISO 27018Certified | ||
| SOC2Compliant |
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