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f.lux 4.55

Makes your computer usable at night

Free Download

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f.lux screenshotDid you ever wake up ready to write something important, and get blinded by your PC display?

During the day, PC displays are looking good - they are created to look like the sun. But, at 10PM, 9PM, and 3AM, you perhaps shouldn't be stare at the sun.

f.lux resolves this issue: it makes the color of your PC's display adjust its brightness to the time of day: warm at night and bright during the day.

f.lux makes your PC display look like the room you are in, all the time. When the sun sets, it makes your PC look like your indoor lights.


  • Relieves eyestrain.
  • Easy to use.
Name f.lux
Version 4.55
Developer | see all products from this developer
Product Homepage f.lux
License Free (Freeware)
Last Week Downloads 23
All Time Downloads 1,563
Filename flux-setup.exe
Filesize 0.7MB
MD5 Checksum AB04818C39C9B3E824C462DA0CE7849E
OS Support Windows All
Category Desktop Enhancements

100% CLEAN Certification

Badgef.lux has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
f.lux 4.84 November 10, 2018 - Latest Version
f.lux 4.76 July 11, 2018
f.lux 4.75 June 25, 2018
f.lux 4.74 June 12, 2018
f.lux 4.73 June 04, 2018

Download the free f.lux