The ID of the extension.


var myAddonId =;


A string representing the add-on ID. If the extension specifies an ID in its browser_specific_settings manifest.json key, contains that value. Otherwise,  contains the ID that was generated for the extension.

Browser compatibility

BCD tables only load in the browser


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