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:
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`:
VitePress will automatically add a `language`_facetFilter_ to the `searchParameters.facetFilter` array with the correct language value. **Make sure to properly configure your DocSearch config as well** by adding `language` as a _custom attribute for faceting_ and by setting it based on the `lang` attribute of the `<html>` element. Here is a short example of DocSearch config:
You can take a look at the [DocSearch config used by Vue Router](https://github.com/algolia/docsearch-configs/blob/master/configs/next_router_vuejs.json) for a complete example.
