Lunar is a free app for Mac, designed to synchronize the settings on all your displays. If you’d like to avoid tapping buttons on your monitor, you can control your preferences with Lunar. Once you’ve configured ExternalDisplayBrightness, use the keys that you selected to change the brightness on your external screen.Ĭontrol the Brightness on Your External Display with the Lunar App

Don’t click Quit just close the window.Set one key for increasing and another for reducing the brightness. Set the preferences by choosing the keys which you’d like to use to regulate brightness for your monitor.You’ll need to grant them if you want the app to serve you properly. During the installation, you’ll be asked for special accessibility access.Download the app from the app store and hit install.Use ExternalDisplayBrightness to Control Your Monitor’s BrightnessĮxternalDisplayBrightness is a popular app that allows you to manage the brightness of your external device. Apart from using the keys on your monitor, here’s what you can do to control the brightness on all of your displays. While you normally can’t use the brightness keys or system preferences to control the behavior of external hardware, some apps make it possible to do so.

Adjust brightness mac shortcut