Internationalization (i18n) in Next.js

1. Introduction

Internationalization (i18n) is the process of designing applications that can be adapted to various languages and regions without engineering changes. Next.js provides robust support for i18n, allowing developers to create multilingual applications easily.

2. Key Concepts

3. Setup

To enable i18n in your Next.js application, follow these steps:

1. Create or open your Next.js project.
2. Update the next.config.js file to include the i18n configuration:

module.exports = {
                i18n: {
                    locales: ['en-US', 'fr', 'es'],
                    defaultLocale: 'en-US',
                },
            };

4. Locales

Define the locales your application supports. For example, you might want to include English (US), French, and Spanish. You can specify these locales in the next.config.js file as shown above.

5. Routing

Next.js automatically handles routing for different locales. To access a localized page, use the following URL format:

http://localhost:3000/fr/page

This URL will serve the French version of "page".

6. Best Practices

• Use descriptive and meaningful locale codes.
• Organize your translation files logically.
• Regularly update translations to ensure consistency.
• Test all locales to ensure a seamless user experience.

7. FAQ