Adding authentication manually can require a lot of backend work. Supabase Auth provides an authentication layer that can be connected to applications such as Next.js.
Create Your Auth Setup
Start with a Supabase project and open the authentication settings. Choose the authentication methods your application needs.
Add the Supabase Client
Install the Supabase JavaScript client and configure it using your project URL and public key.
Create a Signup Form
Your Next.js application can provide a signup form that collects the user's email and password. The form sends the credentials to Supabase Auth.
Create a Login Form
The login form uses the same authentication client to sign users into the application. After successful authentication, the application can access the user's session.
Protect Private Pages
Pages such as dashboards, account settings, or billing sections should only be accessible to authenticated users. Your application can check the current authentication session before allowing access.
Test Everything
Test signup, login, logout, expired sessions, and invalid credentials before launching. Authentication is one of the most important parts of a production application, so don't treat it as an afterthought.