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Per-Component i18n

Name: Intlayer
Author: Intlayer

Type-Safe. Translate with AI. Edit Visually.

Define translations next to components to speed up your development. Keep your bundle as light as it should be. Invite editors through the CMS. Every contribution is genuinely appreciated.

npx intlayer init

npx intlayer init

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Available for

Codebase

Compiler

Visual Editor

Translate

Test

Try it for free using the playground.Go to playground

Improve code maintainability by keeping your content definitions close to your components. Reduce redundancy, enhance clarity, and simplify updates with a structured approach that makes your code easier to manage and scale over time.

Extract your content instantly with the Intlayer Compiler. It will automatically generate the necessary dictionary files for your content to internationalize your application in a second.

Leverage the free visual editor to build and manage your site effortlessly. Create, edit, and organize components and pages without touching code, making it easier for content managers and developers to collaborate efficiently.

Expand your reach with built-in translation support. Easily translate your content using an intuitive interface, ensuring seamless multilingual experiences for your users without the hassle of managing multiple content versions manually.

Use the Intlayer CLI to test and fill your content using AI to ensure all translations are complete and accurate.

Why to chose Intlayer?

Free and Open Source

Intlayer is free and open source, allowing you to use it for free and contribute to suit your needs.

JavaScript-Powered Content Management

Harness the flexibility of JavaScript to define and manage your content efficiently.

Type-Safe Environment

Leverage TypeScript to ensure all your content definitions are precise and error-free.

Declaration at the component level

Keep your translations close to their respective components, enhancing maintainability and clarity.

Simplified Setup

Get up and running quickly with minimal configuration, especially optimized for Next.js projects.

Integrated CMS

Edit your content on your website with an integrated CMS directly on your website. Boost content generation thanks to AI.

Technology

Dynamic JSON loading

Lazy-loads translations at runtime

Scoped JSON (namespacing)

Per-page translation namespaces

See benchmark Read full report

I18n Performance Benchmark

What is this metric?

The total gzip-compressed size of the internationalisation library bundle. It only includes the provider and content retrieval logic after tree-shaking and minification.

Why is it important?

A smaller library size reduces the initial JavaScript payload, leading to faster download and execution times on the client.

View as

Code-Based i18n

Type-safe translations that live in your repo.

Declare content alongside your components in TypeScript or JavaScript. Intlayer generates types automatically, giving you autocompletion, validation, and instant feedback. No more missing keys, context switching, or broken implementations.

Start Coding

AI CLI Tool

Automate translations from your terminal.

The CLI to audit, fill, and translate JSON & Markdown with AI.

Run `npx intlayer fill` to detect missing keys and generate translations using OpenAI, Claude, or local models. Keep your Git history clean and your types safe.

Try the CLI

Intlayer TMS

Stop paying per word. Automate with AI.

The open-source alternative to Crowdin & Lokalise. Built for modern developer workflows.

Manage translations directly in your code or via the visual editor. Leverage AI to translate instantly. Collaborate with your team without seat limits.

See TMS

Headless CMS

Bridge your local code with remote content.

Manage multilingual content with zero overhead. Intlayer allows you to interconnect local dictionaries with remote management, enabling Live Sync for hot updates without rebuilding. Use webhooks for CI/CD, manage feature flags, and let the Auto-Translation AI (WIP) handle the rest.

See CMS

Feature Flags

Toggle features instantly. No deploy required.

Intlayer dictionaries are more than just text. Use them to declare logic, styles, and configuration objects. With Live Sync, you can toggle features on or off, change UI themes, and update app behavior in real-time directly from the CMS.

Try Features

AB testing

Your Playground for Product Experiments.

Be the first to explore Intlayer's new AI-driven A/B Testing beta, built to boost discoverability and guide smarter product decisions. Test anything in real time, from copy and design to entire features, and let the data show you what truly works.

See A/B test

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Meet the amazing contributors who make Intlayer possible

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Frequently asked questions

What is internationalization (i18n)?

Internationalization (i18n) is the process of designing and developing applications like Next.js, React, or Express to support multiple languages easily. It enables you to create multilingual websites by simplifying the translation process. Tools like TypeScript make it easier to implement i18n, allowing for efficient and easy adaptation of your application to different languages and regions.Read more about i18n

What are the main features of Intlayer?

Intlayer simplifies configuration management and enables internationalization for various types of JavaScript applications, including server components. It allows content declaration directly alongside components, improving codebase maintainability. Additionally, Intlayer leverages TypeScript to prevent missing declarations. Finally, Intlayer offers a visual editor, enabling non-developers to edit website content, translate automatically using AI, and optimize the application’s SEO.Read more about Intlayer's features

Is there a visual editor in Intlayer?

Yes, Intlayer provides an optional visual editor for managing content easily without diving into code.Read more about the visual editor

What is the cost of using Intlayer?

Intlayer integrates a selection of free NPM packages along with a visual editor. Additionally, it offers a CMS for externalizing content. This CMS is free to use but includes additional features for Premium and Enterprise plan members.Read more about Intlayer plans

Can I integrate Intlayer on the top of existing solutions?

Yes, Intlayer can be integrated as a wrapper around i18next, next-intl, vue-i18next, and more. This allows you to automate your translations, and use Intlayer without having to refactor your existing code.

What is Intlayer?

Intlayer is a package that allows you to manage your multilingual website. It provides a set of tools and utilities that make it easy to set up your website for multilingual content and localization.Read more about Intlayer

How does Intlayer integrate with Next.js?

Intlayer integrates with Next.js to enable server-side rendering and static site generation, making multilingual content delivery more efficient.Read more about Next.js integration

How can I contribute to Intlayer?

You can contribute by submitting pull requests or reporting issues on the GitHub repository.Read more about how to contribute

Which platforms does Intlayer support?

Intlayer is available for React (including Create React App), Vite with React, Next.js, Tanstack Start, Vue, Nuxt, Express, NestJS, Preact, and more. This ensures a seamless integration with modern JavaScript frameworks and server-side environments.Read more about the platforms supported

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