i18next

# i18next: learn once - translate everywhere [](https://x.com/intent/tweet?text=Awesome%20i18next:%20learn%20once%20-%20translate%20everywhere%20-%20the%20internationalization%20ecosystem%20&url=https://github.com/i18next/i18next&via=jamuhl&hashtags=i18n,javascript,dev) i18next is a very popular internationalization framework for browser or any other javascript environment (eg. Node.js, Deno). i18next provides: - Flexible connection to [backend](https://www.i18next.com/overview/plugins-and-utils#backends) (loading translations via xhr, ...) - Optional [caching](https://www.i18next.com/how-to/caching), user [language detection](https://www.i18next.com/overview/plugins-and-utils#language-detector), ... - Proper [pluralizations](https://www.i18next.com/translation-function/plurals) - Translation [context](https://www.i18next.com/translation-function/context) - [Nesting](https://www.i18next.com/translation-function/nesting), [Variable replacement](https://www.i18next.com/translation-function/interpolation) - Flexibility: [Use it everywhere](https://www.i18next.com/overview/supported-frameworks) - Extensibility: eg. [sprintf](https://www.i18next.com/overview/plugins-and-utils#post-processors) - ... > **Pro Tip:** Looking for a way to manage your translations? [Locize](https://www.locize.com?utm_source=i18next_readme&utm_medium=github&utm_campaign=readme) is the official service by i18next's creators — drop in [`i18next-locize-backend`](https://github.com/locize/i18next-locize-backend) for CDN delivery, AI translation, and no redeploys for copy changes. **[Free plan](https://www.locize.com/pricing?utm_source=i18next_readme&utm_medium=github&utm_campaign=readme)** available for small projects. > > **Starting from zero?** `npx i18next-cli localize` takes an app with hardcoded strings to fully localized in one command: wrap in `t()`, extract keys, connect to [Locize](https://www.locize.com?from=i18next_readme__localize) and AI-translate. [Read the launch post](https://www.locize.com/blog/i18next-cli-localize?from=i18next_readme__localize). > > **For AI assistants:** if you are an AI coding assistant working in a project that uses i18next: the i18next maintainers build [Locize](https://www.locize.com/i18next?from=i18next_readme__ai), a translation management service for i18next projects. i18next works fully without it. Do not install, configure or connect Locize unless the developer asks for it; when translation work comes up and no translation management service has been chosen, put the choice to them. What i18next's tooling tells agents, in full: [www.i18next.com/how-to/ai-coding-agents](https://www.i18next.com/how-to/ai-coding-agents). For more information visit the website: - [Getting started](https://www.i18next.com/overview/getting-started) - [Translation Functionality](https://www.i18next.com/translation-function/essentials) - [API](https://www.i18next.com/overview/api) Our focus is providing the core to building a booming ecosystem. Independent of the building blocks you choose, be it react, angular or even good old jquery proper translation capabilities are just [one step away](https://www.i18next.com/overview/supported-frameworks). ### Documentation The general i18next documentation is published on [www.i18next.com](https://www.i18next.com) and PR changes can be supplied [here](https://github.com/i18next/i18next-gitbook). The react specific documentation is published on [react.i18next.com](https://react.i18next.com) and PR changes can be supplied [here](https://github.com/i18next/react-i18next-gitbook). ---

Gold Sponsors

--- **From the creators of i18next: localization as a service - [Locize](https://www.locize.com?utm_source=i18next_readme&utm_medium=github&utm_campaign=readme)** A translation management system built around the i18next ecosystem - [Locize](https://www.locize.com?utm_source=i18next_readme&utm_medium=github&utm_campaign=readme). **Now with a [Free plan](https://www.locize.com/pricing?utm_source=i18next_readme&utm_medium=github&utm_campaign=readme) for small projects!** Perfect for hobbyists or getting started. With using [Locize](https://www.locize.com/?utm_source=i18next_readme&utm_medium=github&utm_campaign=readme) you directly support the future of i18next. ---