ExtensionInfo

An ExtensionInfo object contains information about an add-on.

Type

It is an object with the following properties:

description

string. The add-on's description, taken from the manifest.json description key.

disabledReason

string. If the add-on is disabled, the reason it was disabled. One of "unknown" or "permissions_increase".

enabled

boolean. Whether or not the add-on is currently enabled.

homepageUrl

string. The add-on's homepage URL, taken from the manifest.json homepage_url key.

hostPermissions

array of string. The add-on's host permissions.

icons

array of object. Information about the add-on's icons. An array of objects, one for each icon. Each object contains two properties:

• size: an integer representing the icon's width and height in pixels.
• url: a string containing a relative URL to the icon, starting at the add-on's root.

id

string. The add-on's ID.

installType

string. String describing how the add-on was installed. One of the following:

• "admin": the add-on was installed because of an administrative policy.
• "development": the add-on was installed unpacked from disk.
• "normal": the add-on was installed normally from an install package.
• "sideload": the add-on was installed by some other software on the user's computer.
• "other": the add-on was installed in some other way.

mayDisable

boolean. Whether this add-on can be disabled or uninstalled by the user.

name

string. The add-on's description, taken from the manifest.json name key.

offlineEnabled

boolean. Whether the add-on claims to support offline.

optionsUrl

string. URL for the item's options page, if it has one. This is a relative URL, starting at the add-on's root.

permissions

array of string. The add-on's API permissions.

shortName

string. A short version of the add-on's name, taken from the manifest.json short_name key.

type

string. String describing the type of add-on. This is used to distinguish extensions from apps and themes. It may take any of the following values:

• "extension": most common type of add-on.
• "hosted_app"
• "packaged_app"
• "legacy_packaged_app"
• "theme"

updateUrl

string. URL for updates to this add-on, taken from the manifest.json applications key.

version

string. Version of this add-on, taken from the manifest.json version key.

versionName

string. Descriptive name for this add-on's version, taken from the manifest.json version_name key.

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

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