Twinkle Tray lets you easily manage the brightness levels on one or multiple monitors. Normalize backlight across different model monitors. Seamlessly blends in with Windows 10 & Windows 11. Uses your Personalization settings to match your taskbar. Starts up with Windows. Accessible from the system tray. Automatically change monitor brightness depending on the time of day or when idle. Available in multiple languages. (Such as Japanese, Spanish, Russian, French, Norwegian, German, Italian, Chinese, Vietnamese, and Croatian) Control DDC/CI features such as contrast, volume, and power state. Works with most laptops and DDC/CI-enabled monitors.

New in v1.17.0: - Implemented SDR brightness control on HDR displays. Requires HDR to be enabled for the display in Windows. By default it will display as an additional slider in the flyout, labeled "SDR". You can have the main slider automatically switch to use the SDR slider using the "SDR Replaces Primary Slider" toggle in Monitor Settings. - Implemented "Disable on Lock Screen" feature (thanks @uhliksk!) Fixes & updates: - Fixed several error handling issues. - Fixed edge case detection of primary monitor (thanks @r3dbaba!) - Fixed tray icon context menu not being localized (thanks @kwiateusz!) - Updated dependencies. - Introduced new bugs. - Updated localizations. Other information: - SDR brightness may not always restore properly after the display turns off or sleeps when "SDR Replaces Primary Slider" is active.