Supabase makes authentication simple and secure. This guide covers everything you need to implement robust auth in your applications.
Why Supabase Auth?
Open Source - No vendor lock-in. Self-host if needed.
Multiple Providers - Email, social logins, phone, magic links.
Row Level Security - Database-level access control.
JWT Tokens - Industry-standard authentication.
Setting Up Authentication
- Create a Supabase project
- Enable your preferred auth providers
- Configure redirect URLs
- Set up email templates
Email/Password Authentication
The most common auth method:
Sign Up:
Sign In:
Social Login
Enable Google, GitHub, Discord, and more:
- Create OAuth apps on provider platforms
- Add credentials to Supabase
- Use supabase.auth.signInWithOAuth()
- Handle the callback
Magic Links
Passwordless authentication: - User enters email - Receives login link - Clicks to authenticate - No password needed
Row Level Security (RLS)
Protect your data at the database level:
Enable RLS on all tables
Create Policies:
Example policy: "Users can only read their own data"
Session Management
Handle sessions properly: - Store tokens securely - Refresh expired tokens - Handle logout completely - Clear local storage
Security Best Practices
- Always use HTTPS
- Implement rate limiting
- Validate inputs server-side
- Use strong password requirements
- Enable MFA for sensitive apps
Integrating with No-Code
Supabase works with: - FlutterFlow (native integration) - Bubble (via API) - Webflow (via JavaScript) - Any platform with HTTP support
Supabase authentication is powerful, flexible, and secure. It's the perfect choice for modern applications.
