How to uninstall a 3rd Party Plugin

The process is the same as for 3rd Party Components and Modules.

They are all types of extension.

To open the Extensions > Manage screen, select Extensions, then Manage from the menu at the top of your website's dashboard.

extensions manage

To uninstall a plugin select the plugin from the list and then the Uninstall button.

extensions uninstall

After you have uninstalled a plugin

Check that no database tables have been left behind by the uninstallation script.

Also check that no directories and files have been left behind.

If database tables and files have been left behind then they pose a security risk.