urbanLifeline/dify/web/i18n-config

Internationalization (i18n)

Introduction

This directory contains the internationalization (i18n) files for this project.

File Structure

├── [  24]  README.md
├── [ 704]  en-US
│   ├── [2.4K]  app-annotation.ts
│   ├── [5.2K]  app-api.ts
│   ├── [ 16K]  app-debug.ts
│   ├── [2.1K]  app-log.ts
│   ├── [5.3K]  app-overview.ts
│   ├── [1.9K]  app.ts
│   ├── [4.1K]  billing.ts
│   ├── [ 17K]  common.ts
│   ├── [ 859]  custom.ts
│   ├── [5.7K]  dataset-creation.ts
│   ├── [ 10K]  dataset-documents.ts
│   ├── [ 761]  dataset-hit-testing.ts
│   ├── [1.7K]  dataset-settings.ts
│   ├── [2.0K]  dataset.ts
│   ├── [ 941]  explore.ts
│   ├── [  52]  layout.ts
│   ├── [2.3K]  login.ts
│   ├── [  52]  register.ts
│   ├── [2.5K]  share.ts
│   └── [2.8K]  tools.ts
├── [1.6K]  i18next-config.ts
├── [ 634]  index.ts
├── [4.4K]  language.ts

We use English as the default language. The i18n files are organized by language and then by module. For example, the English translation for the app module is in en-US/app.ts.

If you want to add a new language or modify an existing translation, you can create a new file for the language or modify the existing file. The file name should be the language code (e.g., zh-Hans for Chinese) and the file extension should be .ts.

For example, if you want to add french translation, you can create a new folder fr-FR and add the translation files in it.

By default we will use LanguagesSupported to determine which languages are supported. For example, in login page and settings page, we will use LanguagesSupported to determine which languages are supported and display them in the language selection dropdown.

Example

1. Create a new folder for the new language.

cd web/i18n
cp -r en-US id-ID

2. Modify the translation files in the new folder.

3. Add type to new language in the language.ts file.

export type I18nText = {
  'en-US': string
  'zh-Hans': string
  'pt-BR': string
  'es-ES': string
  'fr-FR': string
  'de-DE': string
  'ja-JP': string
  'ko-KR': string
  'ru-RU': string
  'it-IT': string
  'uk-UA': string
  'id-ID': string
  'tr-TR': string
  'YOUR_LANGUAGE_CODE': string
}

4. Add the new language to the language.json file.

export const languages = [
  {
    value: 'en-US',
    name: 'English(United States)',
    example: 'Hello, Dify!',
    supported: true,
  },
  {
    value: 'zh-Hans',
    name: '简体中文',
    example: '你好，Dify！',
    supported: true,
  },
  {
    value: 'pt-BR',
    name: 'Português(Brasil)',
    example: 'Olá, Dify!',
    supported: true,
  },
  {
    value: 'es-ES',
    name: 'Español(España)',
    example: 'Saluton, Dify!',
    supported: false,
  },
  {
    value: 'fr-FR',
    name: 'Français(France)',
    example: 'Bonjour, Dify!',
    supported: false,
  },
  {
    value: 'de-DE',
    name: 'Deutsch(Deutschland)',
    example: 'Hallo, Dify!',
    supported: false,
  },
  {
    value: 'ja-JP',
    name: '日本語 (日本)',
    example: 'こんにちは、Dify!',
    supported: false,
  },
  {
    value: 'ko-KR',
    name: '한국어 (대한민국)',
    example: '안녕, Dify!',
    supported: true,
  },
  {
    value: 'ru-RU',
    name: 'Русский(Россия)',
    example: ' Привет, Dify!',
    supported: false,
  },
  {
    value: 'it-IT',
    name: 'Italiano(Italia)',
    example: 'Ciao, Dify!',
    supported: false,
  },
  {
    value: 'th-TH',
    name: 'ไทย(ประเทศไทย)',
    example: 'สวัสดี Dify!',
    supported: false,
  },
  {
    value: 'id-ID',
    name: 'Bahasa Indonesia',
    example: 'Halo, Dify!',
    supported: true,
  },
  {
    value: 'uk-UA',
    name: 'Українська(Україна)',
    example: 'Привет, Dify!',
    supported: true,
  },
  // Add your language here 👇
  ...
  // Add your language here 👆
]

5. Don't forget to mark the supported field as true if the language is supported.

6. Sometime you might need to do some changes in the server side. Please change this file as well. 👇 61e4bbabaf/api/constants/languages.py (L5)

Clean Up

That's it! You have successfully added a new language to the project. If you want to remove a language, you can simply delete the folder and remove the language from the language.ts file.

We have a list of languages that we support in the language.ts file. But some of them are not supported yet. So, they are marked as false. If you want to support a language, you can follow the steps above and mark the supported field as true.

Utility scripts

• Auto-fill translations: pnpm run auto-gen-i18n -- --file app common --lang zh-Hans ja-JP [--dry-run]
  • Use space-separated values; repeat --file / --lang as needed. Defaults to all en-US files and all supported locales except en-US.
  • Protects placeholders ({{var}}, ${var}, <tag>) before translation and restores them after.
• Check missing/extra keys: pnpm run check-i18n -- --file app billing --lang zh-Hans [--auto-remove]
  • Use space-separated values; repeat --file / --lang as needed. Returns non-zero on missing/extra keys (CI will fail); --auto-remove deletes extra keys automatically.
• Generate types: pnpm run gen:i18n-types; verify sync: pnpm run check:i18n-types.

Workflows: .github/workflows/translate-i18n-base-on-english.yml auto-runs the translation generator on en-US changes to main; .github/workflows/web-tests.yml checks i18n keys and type sync on web changes.