Extensions Manager
Uninstall plugins
Many of us install the plugins which we don’t use afterwards. If you don’t want different extensions to slow down your Mac then use Extensions Manager to simply uninstall the ones you don't need. MacShiny will make sure that the unnecessary plugins will not clutter your disk space anymore.
Depending on your individual scan results you will see some or all of the mentioned extensions: Dictionaries, Quick Look plugins, Spotlight plugins, Web browser plugins, QuickTime Player, Tunes plugins and Login items.