> For the complete documentation index, see [llms.txt](https://alhena.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://alhena.gitbook.io/docs/developer-reference/website-sdk/examples/internationalization.md). # Internationalization Configure the chat widget's UI language using the `locale` option. ## Automatic Language Detection By default, Alhena uses the `lang` attribute from your HTML tag: ```html ``` If your page has `lang="es"`, the widget UI will display in Spanish. ## Explicit Locale Configuration To override automatic detection, set the `locale` in your configuration: ```html ``` Use standard [ISO 639-1](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes) language codes (e.g., `en`, `es`, `fr`, `de`). ## Related * [JavaScript API](/docs/developer-reference/website-sdk/javascript-api.md) - Configuration reference