next-intl

Internationalization for Next.js.

Features

Internationalization (i18n) is an essential part of the user experience, therefore next-intl gives you all the parts you need to get language nuances right.

• 🌟 ICU message syntax: Localize your messages with interpolation, cardinal & ordinal plurals, enum-based label selection and rich text.
• 📅 Dates, times & numbers: Apply appropriate formatting without worrying about server/client differences like time zones.
• ✅ Type-safe: Speed up development with autocompletion for message keys and catch typos early with compile-time checks.
• 💡 Hooks-based API: Learn a single API that can be used across your code base to turn translations into plain strings or rich text.
• 🚀 Next.js-native and performance-obsessed: App Router, Server Components, static rendering—pick the right tool for the right job, next-intl works everywhere.
• 🌍 Internationalized routing: Provide unique pathnames per language and optionally localize pathnames for search engine optimization.

What does it look like?

// UserProfile.tsx
import {useTranslations} from 'next-intl';

export default function UserProfile({user}) {
  const t = useTranslations('UserProfile');

  return (
    <section>
      <h1>{t('title', {firstName: user.firstName})}</h1>
      <p>{t('membership', {memberSince: user.memberSince})}</p>
      <p>{t('followers', {count: user.numFollowers})}</p>
    </section>
  );
}

// en.json
{
  "UserProfile": {
    "title": "{firstName}'s profile",
    "membership": "Member since {memberSince, date, short}",
    "followers": "{count, plural, ↵
                    =0 {No followers yet} ↵
                    =1 {One follower} ↵
                    other {# followers} ↵
                  }"
  }
}

→ Read the docs

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Similar packages

Other packages similar to next-intl

react-intl

react-intl is a popular library for internationalizing React applications. It provides similar functionalities to next-intl, such as translation management and date/number formatting. However, it does not offer built-in support for Next.js-specific features like locale routing.

i18next

i18next is a powerful internationalization framework that can be used with various JavaScript libraries, including React. It offers extensive features for managing translations, handling pluralization, and more. While it is more versatile, it requires additional setup to integrate with Next.js compared to next-intl.

next-translate

next-translate is another Next.js-specific internationalization library. It provides similar functionalities to next-intl, such as translation management and locale routing. However, next-translate uses a different approach for loading translations and may have different performance characteristics.