Twinkle Tray is a lightweight, open-source Windows application that lets you control monitor brightness directly from the system tray — smoothly, per display, and without hassle. It supports both internal and external monitors, making brightness control fast, precise, and perfect for multi-monitor setups.
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🎛️ Per-monitor brightness control
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🖥️ Works with external & internal displays
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⚡ System tray integration
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⌨️ Global hotkeys for quick adjustments
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🧠 Automation & rules (time-based, power state, etc.)
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🌙 Built for modern Windows
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🆓 Free & open-source
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🧑💻 Why Twinkle Tray?
Windows offers limited brightness control, especially for external monitors. Twinkle Tray fixes that by giving you full control with a clean UI and zero bloat.
If you run multiple displays, this makes life easier.
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Click the system tray icon to change brightness
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Use hotkeys for instant control
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Configure automation rules to match your workflow