The minimum brightness on my desktop monitor is far too bright. I need a way to reduce the brightness of my screen below the minimum. On my Mac, the app Brightness Slider worked perfectly for this purpose.

Based on the answer to this question, I tried using Dimmer, but it doesn't work properly in Windows 8. Sometimes it just dims the desktop, or the active window, and doesn't dim anything else. The result is a partially bright screen which looks totally weird.

If it matters, I really need this kind of app. If there is no such app available, is it possible that I could code it by myself, somehow? :-|

  • Why do you need it? Is it a health issue or is it a comfort issue? f.lux will change the color temp of the screen which reduces the brightness, but also alters the coloration. If you need it to be dimmed but still need perfect colors for photo editing or something, it won't work. For most users it's great. Mar 29, 2014 at 9:37
  • I'm using Dimmer + ScreenWhite (for changing color tone to cool during night) on Windows-8. Mar 29, 2014 at 9:55
  • The reason I need it is simply because the brightness is too high even at the minimum. As for f.lux, I am already using it and it works great.
    – Vikram
    Mar 29, 2014 at 10:44
  • Do you need a way to dim in addition to f.lux or a way to replace f.lux? Mar 29, 2014 at 11:05
  • f.lux merely changes the color temperature. I need a way to decrease the brightness, which f.lux does not do.
    – Vikram
    Mar 29, 2014 at 15:18

1 Answer 1


f.lux has a hidden feature which allows you to decrease your screen's brightness below the minimum set by Windows.

You can use alt+pgdn to decrease brightness and alt+pgup to increase brightness.

Note: This is not the same as adjusting screen temperature, which f.lux is also able to do.

Dimming screen with f.lux

  • 1
    Oh wow, this is amazing! If only your answer came three years earlier. :D
    – Vikram
    May 12, 2017 at 4:20

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