---
title: lang
slug: Web/Manifest/lang
tags:
  - Manifest
  - Web
  - lang
browser-compat: html.manifest.lang
---
{{QuickLinksWithSubpages("/en-US/docs/Web/Manifest")}}

<table class="properties">
  <tbody>
    <tr>
      <th scope="row">Type</th>
      <td><code>String</code></td>
    </tr>
    <tr>
      <th scope="row">Mandatory</th>
      <td>No</td>
    </tr>
  </tbody>
</table>

The _`lang`_ member is a string containing a single [language tag](/en-US/docs/Web/HTML/Global_attributes/lang). It specifies the primary language for the values of the manifest's directionality-capable members, and together with [`dir`](/en-US/docs/Web/Manifest/dir) determines their directionality.

## Examples

```json
"lang": "en-US"
```

## Specifications

{{Specifications}}

## Browser compatibility

{{Compat}}
