Mac & desktop utilities · Canada
Free Windows brightness control for laptops and external monitors with hardware DDC/CI or software dimming
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Display Dimmer is a free Windows brightness app that controls laptop and external monitor brightness using hardware DDC/CI or software dimming, with schedules
Display Dimmer provides brightness and contrast control for Windows 10 and 11 screens. It supports both hardware brightness control via DDC/CI protocol and software dimming as a fallback when hardware control is unavailable or unreliable. The free version includes per-display controls, one all-display schedule, one all-display app rule, and two all-display hotkeys. Pro is a one-time purchase that adds multiple schedules and app rules with per-display control, presets to save and recall display levels, custom linked display groups, color temperature control without daily limits, command-line automation, and additional themes.
Pricing model: Freemium
Free version at no cost. Pro is $5.99 USD, one-time purchase with no subscription.
Yes. Display Dimmer gives each detected display its own brightness and contrast controls, allowing you to adjust monitors individually or change all of them together without using their physical buttons.
Yes. Software dimming can make the image darker even when your screen is at its lowest brightness setting by adjusting the image rather than lowering the display's physical backlight.
Hardware brightness control depends on your monitor and connection. You need to enable DDC/CI in the monitor's menu, then turn on hardware brightness in Display Dimmer settings. If it still does not respond, try a direct connection without a dock or adapter and temporarily turn off HDR. Software dimming may still work when hardware control is unavailable.
Yes. The Temperature slider lets you choose warmer screen colors for one display or your whole setup. Free users get a 30-minute daily preview; Pro removes this limit and adds automation with schedules and app rules.
Free includes brightness and contrast controls on multiple displays, one all-display schedule, one all-display app rule, two all-display hotkeys, a 30-minute daily temperature preview, and free themes. Pro adds multiple schedules and app rules with per-display control, presets, custom linked display groups, unlimited color temperature control, command-line automation, and all Pro themes. Pro is a one-time purchase with no subscription.
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