Free software that warms up your computer display at night



  -  670.28 KB  -  Freeware
  • Latest Version

    f.lux 4.134 LATEST

  • Review by

    Marian Marinescu

  • Operating System

    Windows XP / Vista / Windows 7 / Windows 8 / Windows 10

  • User Rating

    Click to vote
  • Author / Product

    Michael Herf / External Link

  • Filename


  • MD5 Checksum


f.lux fixes this: it makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.

It's even possible that you're staying up too late because of your computer. You could use f.lux because it makes you sleep better, or you could just use it just because it makes your computer look better.

Ever notice how people texting at night have that eerie blue glow? Or wake up ready to write down the Next Great Idea, and get blinded by your computer screen?

During the day, computer screens look good—they're designed to look like the sun. But, at 9 PM, 10 PM, or 3 AM, you probably shouldn't be looking at the sun.

f.lux makes your computer screen look like the room you're in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again.

Tell f lux what kind of lighting you have, and where you live. Then forget about it flux will do the rest, automatically.

Also Available: Download f.lux for Mac

  • f.lux 4.134 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    f.lux 4.134 Screenshot 1
  • f.lux 4.134 Screenshot 2
  • f.lux 4.134 Screenshot 3

What's new in this version:

- Windows 11 additional monitor fix, which is related to a bug with disabling on multiple monitors (also fixed)
- Disabled “software mouse” cursor for Windows 11 insider