MonitorControl is a free macOS application that allows users to control external display brightness, volume, and contrast while showing native On-Screen Display (OSD) notifications. The app works with keyboard shortcuts, including native Apple media keys, and provides convenient menubar sliders for easy access.
Key Features
- Control brightness, volume, and contrast for external displays
- Native OSD support for brightness and volume adjustments
- Multi-protocol support for different display types:
- DDC for external displays (brightness, contrast, volume)
- Native Apple protocol for Apple and built-in displays
- Gamma table control for software dimming
- Shade control for AirPlay, Sidecar, and virtual displays
- Smooth brightness transitions between levels
- Combined hardware and software dimming that extends beyond minimum display brightness
- Synchronization of brightness across multiple displays
- Support for dimming to complete black
- Compatible with standard Apple media keys and custom keyboard shortcuts
- Extensive customization options through advanced settings
- Clean, unobtrusive macOS-style interface
Compatibility
MonitorControl works with most modern LCD displays from major manufacturers using DDC/CI protocol via USB-C, DisplayPort, HDMI, DVI or VGA connections. It also supports Apple displays, built-in displays, and provides software alternatives for devices without DDC implementation.
macOS Compatibility:
- v4.3.2+: macOS Sequoia (15)
- v4.0.0: macOS Catalina 10.15 (with limitations)
- v3.1.1: macOS Mojave 10.14
- v2.1.0: macOS Sierra 10.12
Installation
The application can be installed by:
- Downloading the latest .dmg file from GitHub Releases
- Using Homebrew:
brew install --cask monitorcontrol
After installation, simply copy the app to your Applications folder and launch it. For keyboard control functionality, you'll need to grant Accessibility permissions when prompted.
Notable Limitations
- DDC control is not supported on built-in HDMI ports of 2018 Intel Mac mini, all M1 Macs, and entry-level M2 Mac mini
- Some displays like EIZO use alternative protocols and only support software dimming
- DisplayLink connections only support software dimming
For users of f.lux or BetterDisplay, certain settings adjustments are recommended to avoid conflicts with gamma table manipulation.
MonitorControl offers professional-grade display management capabilities in a free, open-source package that seamlessly integrates with macOS.
