# Language file for packages

If you want your package to be available in different languages, you can use the existing localizations from Umbraco or register your own localizations. The localizations are written as a key-value pair pattern.

To register localizations to a language, you must add a new manifest to the Extension API. The manifest can be added through the `umbraco-package.json` file like this:

{% code title="umbraco-package.json" lineNumbers="true" %}

```json
{
  ...
  "name": "MyPackage",
  "extensions": [
    {
      "type": "localization",
      "alias": "MyPackage.Localize.En",
      "name": "English",
      "meta": {
        "culture": "en"
      },
      "js": "/App_Plugins/MyPackage/Localization/en-us.js"
    }
  ]
}
```

{% endcode %}

Read the [UI Localization documentation](/umbraco-cms/customizing/foundation/localization.md) to learn in-depth on how you can use languages in your packages and Umbraco in general.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.umbraco.com/umbraco-cms/extending/packages/language-files-for-packages.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.