9 Free Blue Light Filters For Desktop Windows PC, Apple Mac And Chrome Browser

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We all know that light can be both harmful and beneficial for their vision and their overall health, especially sleeping. Natural sunlight contains both UV and blue light. They all know the dangers of UV or UltraViolet light and they often wear sunglasses to prevent long term damage.

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But, what do they know about Blue light? Blue light, which is part of the visible light spectrum, reaches deeper into your eye and its cumulative effect can cause damage to your retina and it is connected to the development of age-related macular degeneration, worst of all, it makes your brain wide awake when you are about to go to bed. This is a must have software for those that works late into the night for better eye protection, health and productivity.


Effects of Blue Light on Eye Health

People are exposed to blue light via everyday technology, Blue light exposure has been shown to impact health. Some studies also suggest that chronic blue light exposure may represent a risk for the development of age-related macular degeneration and other pathologies. Animal studies have shown that age-related macular degeneration can be induced by blue-light exposure.

One epidemiological study has also shown a positive correlation between sunlight exposure – a natural source of blue light- and increased risk of early age-related macular changes in humans. However, this particular association of effects from blue light is difficult to assess in humans and warrants further study.

1. Windows 10 Night Light

Windows 10 Night Light

Your display emits blue light—the kind of light you see during the day—which can keep you up at night. To help you get to sleep, turn on the night light and your display will show warmer colors at night that are easier on your eyes.

If you are using Microsoft Windows 10, there is no need to download any additional software as the build in ‘Blue Light’ filter known as Night Light is good enough for everyday use. The night light isn’t available if your device uses certain drivers (DisplayLink or Basic Display), or if it uses HDR.

To enable the Blue Light mode in Windows 10 ( Creator Updates ), you need to follow these steps. Select Start > Settings > System > Display > Night light > Night light settings.

2. Iris mini

iris screen blue filter

Iris changes the color temperature of your display. Natural light is more blue, while most artificial light (including candlelight) is warmer. Incandescent bulbs, which we’re all used to, become more red in tone when you dim them. But newer LEDs and CFLs don’t – this includes the backlight on your monitor.

If you’re a photographer, you’ve probably dealt with this, since pictures taken inside at night are always much more brown than photos outside. Iris also changes your display brightness in an innovative way without PWM flickering. Iris Mini on the other hand is free.

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3. f.lux

flux blue screen filter

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.

4. Redshift

red shift blue filter led lcd

Redshift adjusts the color temperature according to the position of the sun. A different color temperature is set during night and daytime. During twilight and early morning, the color temperature transitions smoothly from night to daytime temperature to allow your eyes to slowly adapt.

At night the color temperature should be set to match the lamps in your room. This is typically a low temperature at around 3000K-4000K (default is 3700K). During the day, the color temperature should match the light from outside, typically around 5500K-6500K (default is 5500K). The light has a higher temperature on an overcast day.

5. LightBulb


LightBulb is an application that reduces eye strain produced by staring at a computer screen when working late hours. As the day goes on, it continuously adjusts gamma, transitioning the display color temperature from cold blue in the afternoon to warm yellow during the night. Its primary objective is to match the color of the screen to the light sources of your surrounding environment – typically, sunlight during the day and artificial light during the night. LightBulb has minimal impact on performance and offers many customization options.

  • Extensive customization options
  • Pull sunrise and sunset times from the Internet or set them manually
  • Smooth temperature transition for large changes
  • Pause when a fullscreen application or game is in foreground
  • Configurable global hotkeys
  • Minimal impact on performance

6. Eye Saver

Eye Saver

Free software for eye protection and more! It protects your eyes while you are working on the computer.

  • Blue light filter – Filters out the harmful blue light emitted by the display and makes colors warm and easy on the eyes.
  • No flickering – Eliminates the invisible flickering of the display backlight, a cause of eye strain and headaches.
  • Break reminder – Reminds you to take breaks and provides advice on maintaining good health in front of the computer.

7. PC SunScreen

pc sun screen Blue Light Filter

PC SunScreen is a powerful software app for PCs running Windows 7 or later, which automatically adjusts your screen colour to mimic natural daylight, gradually increasing the blue content from dawn to midday and then reducing it in the hours before you intend to go to bed. Research has shown that this can have a significant impact on sleep patterns.

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The colour of natural daylight varies significantly throughout the day. At dawn and dusk, much of the blue content of sunlight is scattered resulting in the dramatic red skies in the early morning and at sunset. The blue content of sunlight reaches a peak close to midday.

8. SunsetScreen

sunsetscreen bluelight filter

SunsetScreen is a free (can be used for free in exchange for sharing PC resources) Windows app for personal use which helps take the glare off your screen in the evening. Scientific research has shown that melatonin – the chemical the brain makes late in the day – is reduced when exposed to blue light.

By tempering this blue light, it becomes easier to wind down properly at night, and thus have a more restful sleep. Whether you’re a morning lark or night owl, SunsetScreen allows you to set the time of the sunset and sunrise, so you can have full control over your sleep cycle.

9. CareUEyes Lite


CareUEyes can automatically filter the blue light and make the screen look warmer and comfortable to the eyes, so that your eyes do not feel tired, and this application comes with several presets that adjust both color temperature and brightness such as normal, smart, office, game and night.

CareUEyes is an eye care software with blue light filter ,screen dimmer and bread minder(rest timer). This software provides eye protection for those who use their computer continuously for hours. Using this eye care software, you will be able to apply a blue light filter to the computer screen in order to reduce eye strain.

You can manually adjust the display color temperature and brightness to apply the blue light filter and relax your eyes. Apart from that, it also comes with 8 different predefined filters based on various activities and you can apply them to your screen with just a click.

10. G.lux

glux night shift mode Blue Light Filter

[ Discontinued ] G.lux is a free and unofficial variation of F.lux, a desktop app that automatically changes the color temperature of your monitor as the sun goes down. Monitors are typically daylight balanced, which can interfere with your sleep cycle when using them after sunset.

G.lux is an alternative for those who are unable to install F.lux due to their operating system or administrator access settings, such as schools and workplaces. In addition, G.lux is currently the only F.lux alternative for millions of ChromeOS users worldwide.

Are Digital Devices Harmful For Your Eyes?

Blue Light Infographic


  1. Gravatar

    Is there a software that filters the blue light the entire day, regardless what part of the day it is?
    I am looking for a constant blue light filter…

    • Gravatar
      Ngan Tengyuen [ Reply ]

      I think Iris Pro, it comes with manual adjustment.

      • Gravatar
        ainsley keen [ Reply ]

        you can use CareUEyes on windows, CareUEyes not only automation adjust blue light but also remind you take a break every one hour.

    • Gravatar

      You can use f.lux for that, is not automatic, but you can just turn it on whenever you want.

      • Gravatar

        F.Lux does not work on Monitor connector through docking station or any monitors using NVIDIA or DisplayLink UI ..
        Any of the above which can work in these conditions?

    • Gravatar
      rowlin [ Reply ]

      Sunsetscreen has a daylight setting and a night setting, so you can adjust the color temp and brightness day or night.

    • Gravatar

      I use redshift on linux with the settings on manual, good simple shell software

    • Gravatar
      Partha [ Reply ]

      With SunsetScreen, all you have to do is click “More options…” and check the box that says “Disable day mode”

      • Gravatar
        Partha [ Reply ]

        Please discard my last message; you just need to put the value “0” without the quotes in the “Delay until sunset” box

    • Gravatar
      Mangoman [ Reply ]

      I think its better to use the monitors own controls for a constant blue light filter. I set mine to warm and it works fine. No software required.

  2. Gravatar
    baskar [ Reply ]

    it’s a manual adjustment

  3. Gravatar
    Josephine Tapp [ Reply ]

    I find auto blue-light filters like flux mess up my gamma calibration even during the day, even when i turn them off (at night, I don’t mind). Any solutions.

  4. Gravatar

    Thanks. I hope its not too late for me to start using anti-glare/blue light features on my laptop since have started experiencing itching in my eyes? Though have seen an optician and he recommended an eye drop.

  5. Gravatar
    Mohan Mishra [ Reply ]

    I’m using TwilBlue and it works good for me. For projector, for PC, for Laptop, aio solution for twilight filter for PC TwilBlue

    • Gravatar
      Rida Maqsood [ Reply ]

      Is twilBlue free or I need to buy it… plz tell me

  6. Gravatar

    Mohan Mishra, TwilBlue Free or Trial??

  7. Gravatar
    Brandon Pillay [ Reply ]

    No2 is no longer free, they offer a week’s trial them the option to purchse for $5 or be subject to peer sharing.

  8. Gravatar
    Ian MacPherson [ Reply ]

    Has anyone compared the effectiveness of these and similar apps, or do they all do more or less the same thing? Is it worth paying for a non-freebie?

  9. Gravatar
    Sarika Patil [ Reply ]

    These are very useful softwares for pc. I use my pc more than 9 hours a day so this will be life-saving for me.

  10. Gravatar
    mena torres [ Reply ]

    Careeyes is no longer freeware.

    • Gravatar
      Ngan Tengyuen [ Reply ]

      Yes, I know, that is why they’ve been moved to 10th spot and not in the list of 7.

  11. Gravatar
    alisen [ Reply ]

    Hello, we have released CareUEyes Lite, it is free software, there is no need to pay, and it is simpler and easier to use, hope to help more people.

  12. Gravatar
    Shobha [ Reply ]

    I have undergone cataract surgery last month and find the colour shades different on the screen.White background of the screen looks slightly lilac shade.Will these software help me in seeing original colours as it’s becoming difficult to edit photos with ” new” vision.

    • Gravatar
      Ngan Tengyuen [ Reply ]

      You dont need software, you need more rest or else you’ll lose your sight.

  13. Gravatar

    Downloaded careueyes, it’s not free, after 30 days they ask you to pay, waste my time

  14. Gravatar
    Kaiden Hightshoe [ Reply ]

    I’ve been using LightBulb for awhile and I’m a pretty big fan. f.lux was nice but it kinda kept messing up my screen even with tinkering with adjustments. The best option is the one that works for you!

  15. Gravatar
    Shilpa Bajaj [ Reply ]

    Night Filter is already installed on your Windows device. Search for it in the settings, turn it on, and customize the timings. It will work for 24 hours.

    • Gravatar
      Shilpa Bajaj [ Reply ]

      Night Light* not Night Filter

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