next-intl

Overview

next-intl is the leading i18n library for Next.js App Router. It handles locale routing, message translation, date/number formatting, and works with both server and client components. ICU message syntax for plurals and variables.

Instructions

Step 1: Setup

npm install next-intl

// i18n/request.ts — Locale detection
import { getRequestConfig } from 'next-intl/server'