Quick control
Fast daily adjustments.
Change brightness and contrast in seconds.
SCREEN DIMMER FOR WINDOWS 10/11
Brightness control for every display on Windows.
Adjust one monitor or your whole setup in seconds. Use schedules, app rules, and hotkeys to automate brightness, with hardware control where supported.
App preview
Quick brightness control, built for real setups
Adjust one monitor or every display at once, then use schedules and app rules to automate the rest.
Quick adjustments
Adjust brightness and contrast in seconds.
Hotkeys
Adjust brightness without opening the app.
Advanced automation
Schedules and app rules that work for you.
DDC/CI control
Use hardware brightness where supported.
DDC/CI support depends on your monitor and connection.
Free vs Pro
Start free for everyday brightness control. Upgrade to Pro inside the app when you want more automation, more hotkeys, and per-display control.
Free
Great for everyday use
- Brightness and contrast control
- 2 hotkeys
- 1 schedule
- 1 app rule
- All displays control
- DDC/CI with gamma fallback
Pro
Best for deeper automation
- More schedules
- More app rules
- Per-display rules
- Linked display groups
- More hotkeys
- Extra themes
Best for automation and multi-display setups.
One-time purchase. No subscription. Upgrade inside Display Dimmer after installing from Microsoft Store.
Install app to upgrade to ProInstall free from Microsoft Store. Pro upgrade is available inside Display Dimmer.
The right control path for each display
Not every display works the same way. Display Dimmer uses hardware control where it works, and falls back gracefully where it doesn’t.
USB-C docks
HDMI and DisplayPort
TVs
KVMs
HDR workarounds
What Display Dimmer does
Use the best available control path for each display.
External monitor sliders
Add brightness and contrast sliders for HDMI, DisplayPort, USB-C, docked, and TV displays.
DDC/CI hardware control
Use monitor hardware controls when the display and connection support them.
Gamma fallback
Keep dimming available when DDC/CI is blocked by docks, adapters, HDR, or firmware.
Schedules and app rules
Automatically adjust brightness by time of day or active app.
Microsoft Store reviews
Loved by Windows users
Real Microsoft Store reviews from people using Display Dimmer for brightness control across external monitors, TVs, and multi-display setups.
75 reviews
Used by 30,000+ Windows users
Nice. Actually works, no bugs or lags. The app does exactly what it promises.
The only one that really works! Display Dimmer is an excellent utility that just works.
Best Dimmer App On Market. Display Dimmer has made a real difference for me.
Nice. Actually works, no bugs or lags. The app does exactly what it promises.
Artem — Ukraine
Apr 22, 2026
The only one that worked.
Douglas — Brazil
Apr 21, 2026 • Translated from Portuguese
The only one that really works! Display Dimmer is an excellent utility that just works. No fiddling necessary. Install, that is it. The minimalistic display does what the app promises. Brightness and contrast, for one or all monitors or programs. But don't let the minimalistic display fool you. Go into settings, and you will find everything you would like to tweak if you are a super user. Great job, Display Dimmer team!
Jan — South Africa
Apr 21, 2026
Super for eyes!
Tino — Croatia
Apr 16, 2026 • Translated from Croatian
Best Dimmer App On Market. I spend a lot of time in front of a computer and Display Dimmer has made a real difference for me. I find the schedules and app rules especially useful and it’s been solid on my multi monitor setup. The free version gave me enough to test it properly before I decided to upgrade to the pro version. Since using it, my eyes feel less tired and I get fewer headaches after long workdays.
jet — United States
Apr 15, 2026
Easiest to use. This app is easiest to use than other apps which are more popular. Keep this design and slider bar. Best one, thank you for making this.
Vasanth — India
Apr 15, 2026
Perfect on my Samsung 4K TV. I tried all the other free widgets, it was the only one functional. I come from Linux, amazing that it is not integrated by default.
yoann — France
Apr 10, 2026 • Translated from French
Useful for laptops. On my Asus laptop with an Nvidia video card there is no way to adjust the contrast, which is so high as to be annoying. This free program has allowed us to solve the problem. Thank you.
Pierluca — Italy
Apr 3, 2026 • Translated from Italian
It looks good. My extra monitor, it's really a TV, and it's not compatible with many brightness adjustment programs. And this is the only thing that has worked for me, it's very practical.
Johan — Mexico
Apr 2, 2026 • Translated from Spanish
Works great.
Jason — United States
Apr 2, 2026
Simple and quick. On the elegance this provides for my eyes, great app, hell, I'd pay even.
Κωνσταντίνος — Greece
Mar 27, 2026 • Translated from Greek
Great and simple. It’s just this: 2 sliders, one for contrast and brightness, and you can adjust it however you want and everything is free. I love this extension so much.
Les — United States
Mar 16, 2026
Brightness control is very good and simple .I like it.
Sagnik — United States
Mar 10, 2026
W App. My screen has been too bright for years
Natnapat — Thailand
Mar 4, 2026
You can not only change the brightness via DDC/CI, but also adjust it by software if DDC/CI does not work. Just a menu without unnecessary functions.
Oleg — Russia
Feb 12, 2026 • Translated from Russian
My laptop’s brightness control wasn’t working because of a hardware issue, and the screen was stuck at 100%. This app helped me reduce it.
Andreas — Indonesia
Feb 10, 2026
I can confirm the issue is fixed! The Author gets 5 stars for fulfilled promises and hard work. Thank you for creating such a great tool!
Ameer — Germany
Feb 3, 2026
Works great. Actually reduces brightness over regular.
Jon — United States
Jan 25, 2026
It is simple and very working, this is really the best simple effective
Husham — Malaysia
Jan 7, 2026
Five stars, for being one of very few such apps which works perfectly with my monitors and telly. Only one issue, just a small thing, which is that the launch behaviour "Start in Tray" doesn't work for me. The window pops up on start, regardless of what setting I choose. Also I would ideally like the darkest setting to be a bit darker. They're just little things though, it's still a really decent app. (Windows 11 Home, 25H2)
Nik — United Kingdom
Dec 30, 2025
Works well
Norbert — Hungary
Dec 21, 2025 • Translated from Hungarian
Help & guides
Guides and answers
Quick fixes for missing sliders, DDC/CI, HDR, docks, adapters, and external-monitor control.
External monitors
DDC/CI
Gamma fallback
HDR
Docks
Helpful guides
Screen dimmer for Windows
Dim laptop and external screens.
Brightness slider for external monitors
Regain per-monitor brightness control.
How to enable DDC/CI
Find the monitor setting for hardware brightness.
Windows 11 brightness slider missing
Why external monitors need a separate slider.
HDR and brightness control
What to do when HDR blocks DDC/CI.
View all guides
Common questions
Can it add a brightness slider for external monitors?
Yes. Display Dimmer adds per-monitor brightness and contrast controls for external monitors, including HDMI, DisplayPort, USB-C, docked, and mixed-display setups.
Is Display Dimmer a screen dimmer for Windows?
Yes. It can dim built-in laptop screens and external monitors on Windows 10/11, using DDC/CI where available and gamma dimming when hardware control is unavailable.
Why doesn’t DDC/CI work on my monitor?
DDC/CI depends on the monitor, connection, dock, adapter, firmware, and HDR state. If hardware control is blocked or unreliable, Display Dimmer can use gamma fallback for that display.
Does it work with laptops and external monitors?
Yes. It works with Windows laptops, built-in panels, and external monitors you connect. External displays can use DDC/CI where supported or gamma fallback where needed.
What’s the difference between Free and Pro?
Free includes everyday brightness and contrast control, 2 hotkeys, 1 schedule, and 1 app rule. Pro is a $3.49 USD one-time purchase available as an upgrade inside Display Dimmer after installing from Microsoft Store. It adds more schedules, more app rules, more hotkeys, per-display rules, linked display groups, and extra themes.
Does Display Dimmer collect personal data?
Display Dimmer does not use accounts, ad tracking, or third-party analytics. Settings stay on your PC, with optional diagnostics only if you choose to send a report.