f.lux
Software that makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.
License model
- Free • Proprietary
Application types
Platforms
- Mac
- Windows
- Linux
Features
- Blue light filter
- Color temperature modes
- Time Scheduling
- Colour control
- Color Temperature
- Simple installation
- No registration required
- Ad-free
- Lightweight
- Backlight brightness control
- Dark Mode
- Reduce Eyestrain
- Display Management
- Temperature Monitoring
- Scheduling
f.lux News & Activities
Recent News
Recent activities
Watitumorro added f.lux as alternative to screen-dimmer-pixel-filter- POX updated f.lux
f.lux information
What is f.lux?
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 9PM, 10PM, or 3AM, you probably shouldn't be looking at the sun.
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.
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. f.lux will do the rest, automatically.
f.lux also supports Philips Hue smart lighting system. Lightbulbs can be synced to your f.lux settings to create a surrounding environment that's more friendly to sleep.
Comments and Reviews
Just an amazing tool for your eyes' health
f.lux is easy to install, both on Windows and Linux, tracks the Sun position depending on your location on Earth and so behaves very naturally, during day and night, reducing blue light when the sun is going down and setting normal brightness in the morning, thus preventing you from suffering from insomnia due to excess of blue light at night and preventing eye strain at any time. The Windows Beta version is more advanced and it even asks you what's your wake-up hour and has a circadian cycle graph with comments and percentages when you mouse over. Also allows you to choose your preferred light temperature or you can use the recommended one which is constantly changing depending on the moment of the day/night (but you won't notice it). More, it has a temporary/permanent disable mode if you need to watch a movie or work with graphics editing apps (in Linux this is the Pause mode). Since I use both Linux and Windows this app is perfect for me. My only complaint is that the Windows version gets lots of updates and the Betas but on Linux the app is stalled since a few years ago, which is really a shame, although it's still very useful.
This app completely resets Windows calibration settings and the developers aren't willing to fix it even though the issue has been oepnly addressed on their forum multiple times. This makes it completely unusable for me since all my black colors turn to grey and if you're using Windows calibration, you won't be able to use it neither.
broken on linux for several years
A wonderful program and will always be my favorite screen dimmer.
Windows 10 Night Light feature did not provide sufficiently warm color temperature. f.lux also surprised with a non intrusive reminder about my wake-up time.
It works great! It changes the colors of the screen during the day.