next-intl-app-router

Configure next-intl for locale-based routing by defining locales in a routing config, loading per-locale message JSON files, and applying middleware/proxy configuration across app/[locale] layouts and pages.

Middleware handles i18n locale routing in Next.js App Router by intercepting requests and applying proxy configuration to direct users to the correct app/[locale] path. This ensures consistent locale-based routing and translations across the application.

Yes, you need per-locale message JSON files for Next.js i18n. These files store the translation messages loaded by the application, enabling consistent localized content delivery across different languages in your App Router project.

The best way to load translations on server and client components in Next.js App Router is using next-intl's getMessages and setRequestLocale functions. This ensures correct server and client usage of translations within your app/[locale] structure.

Yes, you can use next-intl to centralize i18n configuration for a multi-language Next.js website. It centralizes routing, message loading, and middleware configuration to manage per-locale content and navigation effectively.

next-intl translations may not render correctly in Next.js App Router pages if setRequestLocale is not properly called or if the routing config and per-locale message JSON files are not correctly aligned with your app/[locale] layout structure.