Build your own sign-in-or-up page for your Next.js app with Clerk
This guide shows you how to use the <SignIn /> component to build a custom page that allows users to sign in or sign up within a single flow.
To set up separate sign-in and sign-up pages, follow this guide, and then follow the custom sign-up page guide.
Build a sign-in-or-up page
The following example demonstrates how to render the <SignIn /> component on a dedicated page using the Next.js optional catch-all route.
import { SignIn } from '@clerk/nextjs'
export default function Page() {
return <SignIn />
}Make the sign-in-or-up route public
By default, clerkMiddleware() makes all routes public. This step is specifically for applications that have configured clerkMiddleware() to make all routes protected. If you have not configured clerkMiddleware() to protect all routes, you can skip this step.
To make the sign-in route public:
- Navigate to your
middleware.tsfile. - Create a new route matcher that matches the sign-in route, or you can add it to your existing route matcher that is making routes public.
- Create a check to see if the user's current route is a public route. If it is not a public route, use
auth.protect()to protect the route.
import { clerkMiddleware, createRouteMatcher } from '@clerk/nextjs/server'
const isPublicRoute = createRouteMatcher(['/sign-in(.*)'])
export default clerkMiddleware(async (auth, req) => {
if (!isPublicRoute(req)) {
await auth.protect()
}
})
export const config = {
matcher: [
// Skip Next.js internals and all static files, unless found in search params
'/((?!_next|[^?]*\\.(?:html?|css|js(?!on)|jpe?g|webp|png|gif|svg|ttf|woff2?|ico|csv|docx?|xlsx?|zip|webmanifest)).*)',
// Always run for API routes
'/(api|trpc)(.*)',
],
}Update your environment variables
- Set the
CLERK_SIGN_IN_URLenvironment variable to tell Clerk where the<SignIn />component is being hosted. - Set
CLERK_SIGN_IN_FALLBACK_REDIRECT_URLas a fallback URL incase users visit the/sign-inroute directly. - Set
CLERK_SIGN_UP_FALLBACK_REDIRECT_URLas a fallback URL incase users select the 'Don't have an account? Sign up' link at the bottom of the component.
Learn more about these environment variables and how to customize Clerk's redirect behavior in the dedicated guide.
NEXT_PUBLIC_CLERK_SIGN_IN_URL=/sign-in
NEXT_PUBLIC_CLERK_SIGN_IN_FALLBACK_REDIRECT_URL=/
NEXT_PUBLIC_CLERK_SIGN_UP_FALLBACK_REDIRECT_URL=/Visit your new page
Run your project with the following command:
npm run devyarn devpnpm devbun devVisit your new custom page locally at localhost:3000/sign-in.
Custom sign-up page
Learn how to add a custom sign-up page to your Next.js app with Clerk's prebuilt components.
Read user and session data
Learn how to use Clerk's hooks and helpers to access the active session and user data in your Next.js application.
Client-side helpers
Learn more about Next.js client-side helpers and how to use them.
Next.js SDK Reference
Learn more about additional Next.js methods.
Clerk components
Learn more about Clerk's prebuilt components that make authentication and user management easy.
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