brightness ☆
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Description:
Change macOS display brightness from the command-line
Type: Formula  |  Latest Version: 1.2@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: System utilities
Tags: macos brightness display cli utility system
Install: brew install brightness
About:
Brightness is a lightweight command-line utility that allows users to adjust the brightness of connected displays on macOS. It communicates directly with the system's I/O Kit framework to set brightness levels precisely. This tool is ideal for automation and users who prefer keyboard-driven workflows over using physical monitor controls.
Key Features:
  • Command-line interface for quick brightness adjustments
  • Supports multiple external displays
  • Works without GUI interaction
  • Lightweight and scriptable
Use Cases:
  • Automating brightness adjustments in development workflows
  • Controlling external monitor brightness via keyboard shortcuts
  • Batch updating brightness across multiple connected displays
Alternatives:
  • brightness-cli – Similar functionality, but brightness (nriley) is more actively maintained and supports multiple displays better
  • MonitorControl – GUI-based alternative with OSD support, but requires more system resources
License: BSD-2-Clause
Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, arm64_big_sur, sonoma, ventura, monterey, big_sur, catalina
Version History
Detected Version Rev Change Commit
Sep 12, 2025 7:14pm 0 VERSION_BUMP 333181c7
Sep 11, 2024 10:39am 0 VERSION_BUMP aa87b20f
Sep 30, 2023 7:31am 0 VERSION_BUMP 33c6d9a8
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