Implementation:Langgenius Dify I18n Languages

Knowledge Sources	Langgenius_Dify
Domains	Frontend, Internationalization
Last Updated	2026-02-12 07:00 GMT

Overview

Static language catalog defining all locales available in the Dify frontend, including their display names, prompt names, example strings, and support status.

Description

This module exports a const-asserted data object containing an array of all language definitions recognized by the Dify platform. Each entry in the languages array describes a single locale with four properties:

• value -- The BCP 47-style locale tag (e.g., 'en-US', 'zh-Hans', 'ja-JP'). This value is used as the canonical locale identifier throughout the application.
• name -- The human-readable display name of the language, typically in its own script (e.g., '简体中文', '日本語 (日本)').
• prompt_name -- An English label used when referencing the language in LLM prompts (e.g., 'Chinese Simplified', 'Japanese').
• example -- A short example greeting string in the target language, used for UI previews.
• supported -- A boolean flag indicating whether this locale is actively supported. Only locales with supported: true are included in the application's locale picker.

The object is exported with as const, which means TypeScript infers literal types for all values, enabling type-safe locale handling throughout the codebase. The module currently defines 23 languages, all marked as supported.

Usage

Use this module as the single source of truth for the list of languages in the Dify frontend. It is imported by language.ts to derive the LanguagesSupported array and the Locale type. When adding a new language to Dify, a new entry should be appended to this array.

Code Reference

Source Location

• Repository: Langgenius_Dify
• File: web/i18n-config/languages.ts
• Lines: 1-167

Signature

const data: {
  languages: readonly [
    {
      value: 'en-US'
      name: 'English (United States)'
      prompt_name: 'English'
      example: 'Hello, Dify!'
      supported: true
    },
    // ... 22 more entries
  ]
}

export default data

Import

import data from '@/i18n-config/languages'

// Access the languages array
const languages = data.languages

I/O Contract

Inputs

Name	Type	Required	Description
(none)	--	--	This module has no function inputs; it exports a static data constant.

Outputs

Name	Type	Description
data.languages	readonly Array<{ value: string; name: string; prompt_name: string; example: string; supported: boolean }>	An immutable array of language definition objects.

Supported Languages

The following table lists all 23 languages defined in the module:

Locale Code	Display Name	Prompt Name	Example
en-US	English (United States)	English	Hello, Dify!
zh-Hans	简体中文	Chinese Simplified	你好，Dify！
zh-Hant	繁體中文	Chinese Traditional	你好，Dify！
pt-BR	Portugues (Brasil)	Portuguese	Ola, Dify!
es-ES	Espanol (Espana)	Spanish	Hola, Dify!
fr-FR	Francais (France)	French	Bonjour, Dify!
de-DE	Deutsch (Deutschland)	German	Hallo, Dify!
ja-JP	日本語 (日本)	Japanese	こんにちは、Dify!
ko-KR	한국어 (대한민국)	Korean	안녕하세요, Dify!
ru-RU	Русский (Россия)	Russian	Привет, Dify!
it-IT	Italiano (Italia)	Italian	Ciao, Dify!
th-TH	ไทย (ประเทศไทย)	Thai	สวัสดี Dify!
uk-UA	Українська (Україна)	Ukrainian	Привет, Dify!
vi-VN	Tieng Viet (Viet Nam)	Vietnamese	Xin chao, Dify!
ro-RO	Romana (Romania)	Romanian	Salut, Dify!
pl-PL	Polski (Polish)	Polish	Czesc, Dify!
hi-IN	Hindi (India)	Hindi	Namaste, Dify!
tr-TR	Turkce	Turkce	Selam!
fa-IR	Farsi (Iran)	Farsi	سلام, دیفای!
sl-SI	Slovensko (Slovenija)	Slovensko	Zdravo, Dify!
id-ID	Bahasa Indonesia	Indonesian	Halo, Dify!
nl-NL	Nederlands (Nederland)	Dutch	Hallo, Dify!
ar-TN	العربية (تونس)	Tunisian Arabic	مرحبا، Dify!

Usage Examples

Iterating Over All Supported Languages

import data from '@/i18n-config/languages'

const supportedLanguages = data.languages.filter(lang => lang.supported)
supportedLanguages.forEach(lang => {
  console.log(`${lang.name} (${lang.value}): ${lang.example}`)
})

Accessing a Specific Language Entry

import data from '@/i18n-config/languages'

// Find Japanese entry
const japanese = data.languages.find(lang => lang.value === 'ja-JP')
console.log(japanese?.prompt_name) // 'Japanese'

Related Pages

• Principle:Langgenius_Dify_Internationalization_Configuration