A language tag such as "en-US" or "fr".


Values of this type are strings.

Browser compatibility

Chrome Edge Firefox Firefox for Android Opera
Basic Support Yes Yes 45.0 48.0 33


This API is based on Chromium's chrome.i18n API. This documentation is derived from i18n.json in the Chromium code.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.

Document Tags and Contributors

 Contributors to this page: wbamberg
 Last updated by: wbamberg,