# Theme Config: Algolia Search The `themeConfig.algolia` option allows you to use [Algolia DocSearch](https://docsearch.algolia.com/). To enable it, you need to provide at least apiKey and indexName: ```js module.exports = { themeConfig: { algolia: { apiKey: 'your_api_key', indexName: 'index_name' } } } ``` For more options, check out [Algolia DocSearch's documentation](https://docsearch.algolia.com/docs/behavior). You can pass any extra option alongside other options, e.g. passing `searchParameters`: ```js module.exports = { themeConfig: { algolia: { apiKey: 'your_api_key', indexName: 'index_name', searchParameters: { facetFilters: ['tags:guide,api'] } } } } ``` ## Internationalization (i18n) If you have multiple locales in your documentation and you have defined a `locales` object in your `themeConfig`: ```js module.exports = { themeConfig: { locales: { // ... }, algolia: { apiKey: 'your_api_key', indexName: 'index_name' } } } ``` VitePress will automatically add a `lang` _facetFilter_ to the `searchParameters.facetFilter` array with the correct language value. Algolia automatically adds the correct facet filter based on the `lang` attribute on the `` tag. This will match search results with the currently viewed language of the page.