# i18next/i18next

i18next: learn once - translate everywhere

Repository: https://github.com/i18next/i18next
Canonical: https://ross.abutalabs.com/products/i18next
Homepage: https://www.i18next.com
Language: JavaScript
License: MIT
License Family: permissive
Topics: translation, ecosystem, flexibility, internationalization, i18n, nodejs, deno, javascript
Last push: 2026-08-20T09:22:09+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 98, release rhythm 86, longevity 100
- inputs: {"age_days": 5374, "days_push": 13, "days_rel": 13, "gap_med": 2.5, "n_releases_24m": 111}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8623, forks 693 (observed 2026-08-28T04:10:23.901008+00:00)

## What it is
i18next is a popular internationalization (i18n) framework for JavaScript that runs in the browser, Node.js, Deno, and other JS environments. It provides translation loading, plurals, context, interpolation, nesting, language detection, and a large plugin ecosystem with integrations for React, Vue, Angular, Next.js, and more.

## Use cases
- add multi-language support to a javascript web app
- translate a react application
- handle pluralization and interpolation in translations
- detect the user's language and load translations dynamically
- localize a node.js backend or CLI
- manage translation files across namespaces
- extract and sync translation keys in a codebase

## When to choose
- you need a mature, battle-tested i18n solution for any JavaScript environment
- you want framework integrations (React, Vue, Angular, Next.js, Svelte)
- you need advanced features like plurals, context, nesting, and fallback languages
- you want a plugin ecosystem for backends, caching, and language detection

## When to avoid
- you need i18n outside the JavaScript ecosystem
- you want a fully managed translation service without managing JSON resource files yourself
- your project is a simple static site where a lightweight i18n helper suffices

## Facets
- artifact type: framework
- maturity: stable
- function: internationalization, plugin-system, caching, cli
- domain: web-development, frontend, cross-platform, developer-tools
- platform: browser, cross-platform
- tags: i18n, translation, l10n, plurals, interpolation, language-detection, react, vue, angular, localization, nodejs, deno, javascript

## Member repositories
- i18next/i18next (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:23.901008+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:25:52.604211+00:00, confidence not recorded.
  - readme: https://github.com/i18next/i18next (fetched 2026-08-28T04:10:23.901008+00:00, sha db8e4c7df7a6)
  - homepage: https://www.i18next.com (fetched 2026-08-29T08:26:39.298154+00:00, sha e3529cb11a2d)
  - site_page: https://www.i18next.com/overview/getting-started (fetched 2026-08-29T08:26:39.308883+00:00, sha 2ea1859c426d)
  - site_page: https://www.i18next.com/how-to/faq (fetched 2026-08-29T08:26:39.311919+00:00, sha 106b84cceb76)
  - site_page: https://www.i18next.com/overview/supported-frameworks (fetched 2026-08-29T08:26:39.314569+00:00, sha f48a878679d8)
  - site_page: https://www.i18next.com/overview/plugins-and-utils (fetched 2026-08-29T08:26:39.316753+00:00, sha 15f0ca434aff)
  - site_page: https://www.i18next.com/overview/configuration-options (fetched 2026-08-29T08:26:39.319015+00:00, sha 67d01f286bab)
  - site_page: https://www.i18next.com/principles/namespaces (fetched 2026-08-29T08:26:39.321042+00:00, sha 2896fa39e02a)
  - site_page: https://www.i18next.com/overview/for-enterprises (fetched 2026-08-29T08:26:39.322909+00:00, sha 2cd6b6b363b7)
- Data as of 2026-08-30T08:39:29.467469+00:00.