The ID of the extension.


var myAddonId =;


A string representing the add-on ID. If the extension specified an ID in its applications manifest.json key, will contain that value. Otherwise, will contain the ID that was generated for the extension.

Browser compatibility

ChromeEdgeFirefoxFirefox for AndroidOpera
Basic support22Yes454815


This API is based on Chromium's chrome.runtime API. This documentation is derived from runtime.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: andrewtruongmoz, wbamberg, Makyen, chrisdavidmills
 Last updated by: andrewtruongmoz,