Twinkle Tray enables brightness control on external displays in Windows 10 & 11. Even th Windows is capable of adjusting the backlight on most monitors, it doesn't support external monitors natively. Windows also lacks any options to manage the brightness of multiple displays. This app inserts a new icon into your system tray, where you can click to have instant access to the brightness levels of all compatible displays. Features:

Adds brightness sliders to the system tray, similar to the built-in Windows volume flyout. Seamlessly blends in with Windows 10 and Windows 11. Uses your Personalization settings to match your taskbar. Can automatically change monitor brightness depending on the time of day or when idle. Assign hotkeys to adjust brightness per display or all at once. Normalize backlight across different monitors. Starts up with Windows. Multi languages.

Beta features with pre-release version 1.16 after 2023:

Designation of VCP code Profile can be easily changed to a saved favorite brightness.