brightness-sync ☆
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Description:
Utility to synchronise the brightness of LG UltraFine display(s)
Type: Cask  |  Latest Version: 2.3.2@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: System utilities
Tags: brightness lg-ultrafine display monitor utility productivity
Install: brew install --cask brightness-sync
About:
Brightness-Sync is a macOS utility designed to automatically synchronize the brightness levels across multiple LG UltraFine displays. It runs as a background process, detecting changes on one monitor and instantly applying them to others to maintain a consistent visual environment. This tool solves the inconvenience of manual adjustment for users with dual or multi-monitor setups.
Key Features:
  • Automatic brightness synchronization across displays
  • Runs unobtrusively in the background
  • Specifically optimized for LG UltraFine monitors
  • Simple, lightweight, and easy to configure
Use Cases:
  • Maintaining consistent brightness on a dual LG UltraFine monitor setup
  • Automating display settings for a consistent visual workflow
Alternatives:
  • DisplayBuddy – A paid commercial tool that supports a wider range of monitor brands beyond LG.
  • Manual Adjustment – Using macOS System Settings, which requires adjusting each display individually.
Version History
Detected Version Rev Change Commit
Aug 5, 2025 2:16pm 2.3.2 0 VERSION_BUMP 20d775b9
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