Internationalization (i18n) for Next.js that gets out of your way.
📣 Support for Next.js 13 and the App Router has arrived →
Features
Internationalization is an essential part of the user experience. next-intl gives you everything you need to get language subtleties right and has always got your back whenever you need to fine-tune a translation.
- 🌟 ICU message syntax: Localize your messages with interpolation, plurals, ordinal pluralization, 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-only API: Learn a single API that can be used across your code base to turn translations into plain strings or rich text.
- 🚀 Fast: Get the best performance from your app by supporting internationalization on both static and dynamic pages.
- ⚔️ Standards-based: Use the best parts of built-in JavaScript APIs and supplemental lower-level APIs from Format.JS.
What does it look like?
This library is based on the premise that messages can be grouped by namespaces (typically a component name).
// UserDetails.tsx
import {useTranslations, useFormatter} from 'next-intl';
function UserDetails({user}) {
const t = useTranslations('UserDetails');
const format = useFormatter();
return (
<section>
<h2>{t('title')}</h2>
<p>{t('followers', {count: user.followers.length})}</p>
<p>{t('lastSeen', {time: format.relativeTime(user.lastSeen)})</p>
<Image alt={t('portrait', {username: user.name})} src={user.portrait} />
</section>
);
}// en.json
{
"UserDetails": {
"title": "User details",
"followers": "{count, plural, ↵
=0 {No followers yet} ↵
=1 {One follower} ↵
other {# followers} ↵
}",
"lastSeen": "Last seen {time}",
"portrait": "Portrait of {username}"
}
}