I18n
Site I18n Config
To take advantage of multi-language support in VuePress, you first need to use the following file and directory structure:
docs
├─ README.md
├─ foo.md
├─ nested
│  └─ README.md
└─ zh
   ├─ README.md
   ├─ foo.md
   └─ nested
      └─ README.mdThen, specify the locales option in your config file:
export default {
  locales: {
    // The key is the path for the locale to be nested under.
    // As a special case, the default locale can use '/' as its path.
    '/': {
      lang: 'en-US',
      title: 'VuePress',
      description: 'Vue-powered Static Site Generator',
    },
    '/zh/': {
      lang: 'zh-CN',
      title: 'VuePress',
      description: 'Vue 驱动的静态网站生成器',
    },
  },
}If a locale does not have a lang, title, description or head, VuePress will fallback to the root-level values. You can omit the root level config as long as they are provided in each locale.
Tips
Config reference: locales
Theme I18n Config
VuePress does not restrict how themes provide multi-language support, so each theme may have different way to handle i18n, and some themes may not provide multi-language support at all. You'd better refer to the theme documentation for detailed guide.
If you are using default theme, the multi-language support is the same as above:
import { defaultTheme } from '@vuepress/theme-default'
import { defineUserConfig } from 'vuepress'
export default defineUserConfig({
  theme: defaultTheme({
    locales: {
      '/': {
        selectLanguageName: 'English',
      },
      '/zh/': {
        selectLanguageName: '简体中文',
      },
    },
  }),
})