Users within a Joomla site can belong to one or more groups and inside a standard Joomla installation, there are some default groups with quite specific features.

Understanding their meaning can be very useful in permissions' definition.

In this article we'll learn what are these groups and what do they mean.

Public

Users who are not logged in or do not have an account on the site.

Registered

Users who own an account on the site and can login, having access to any content where access level is Registered.

Author

Users with the same features of the Registered ones, which can create new contents and modify their own.

Editor

Users with the same features of the Author ones, which can edit contents written by other users.

Publisher

Users with the same features of the Editor ones, which can change contents' status (Published, Suspended, ...).

Manager

Users who can login in the control panel and create/edit contents; however they can't create users or install components.

Administrator

Limited administrator users who can login in the control panel; however they can't add users to the Super Users group or edit site's global configuration.

Super Users

Global administrator users who can login in the control panel and who can do any type of work on the site.