Blue Light Filter For Mac Free Download

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Researchers are continually releasing studies on the potential harm of blue light. When you stare at a screen all day and into the evening, it can affect your sleep and disrupt your body’s natural rhythms. For these reasons, blue light filters are incredibly important.

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Whether you are spending your day on a Windows PC, Mac, or Chromebook, you should enable their blue light filter to help ease the strain on your eyes. Desktop screens and laptops typically have a built-in filter you can access, and there are downloadable options in case your computer doesn’t have this feature available.

If you’re looking for a blue light filter for your smartphone, however, there are plenty of great apps you can download from the Google Play Store or iOS App Store.

What’s the problem with blue light?

The reason blue light hurts is purely biological. Sleep is a part of the circadian rhythm, which is the cycle of biological processes that are determined in part by the levels of light and dark exposed to our bodies.


In the most natural setting, which is one where we’re only exposed to sunlight, our retinas sense when the sun descends and the environment grows darker. That induces our hypothalamus to start the process of producing melatonin and other sleep hormones and reducing our body temperature.

When we use artificial lighting to extend our day, however, our bodies get confused, and the various sleep signals are disrupted. Even worse is the blue light emitted by fluorescent and LED lights — like those on our various device displays — which cause us to be more alert and produce even less melatonin.

That’s why using a blue light filter is so important.

Windows 10

Microsoft added a blue light-limiting feature to Windows 10 in the Creators Update released in April 2017. Called Night Light, this feature shifts the Windows 10 display to show warmer colors that reduce the amount of emitted blue light. Turning the feature on is a simple process.

Step 1: Right-click on the Start button and select Settings on the Power User menu. Alternatively, you can press the Windows + X keys and then click Settings.

Step 2: Choose System in the pop-up window.

Step 3: The Display category opens by default. Scroll down on the right and toggle on the Night Light setting.

To configure the Night Light feature, click the Night Light Settings link located under the toggle. Here, you’ll find options for turning Night Light on immediately, adjusting the strength, and scheduling when it turns on and off.

To set the schedule, toggle the Schedule Night Light option to on. Then, you can either choose to let Night Light turn itself on at sunset and off at sunrise — automatically determined by your location — or you can set the time manually by clicking Set Hours and choosing when the feature should turn on and off.

When you first turn the feature on, you’ll notice the color shift immediately. After a while, your eyes will adjust to the change, and it should be less obvious. By reducing the amount of blue light, however, the Night Light feature will then limit the impact of using your Windows 10 PC late at night — you could find it easier to get to sleep, and your sleep might be deeper and more restful.

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First introduced in iOS, Apple brought Night Shift to Macs in MacOS Sierra in March 2017. As with Windows 10, the feature is easy enough to turn on and configure to your tastes.

Step 1: Click the Apple logo in the top-left corner and select System Preferences on the drop-down menu. Alternatively, click the System Preferences icon on the Dock.

Step 2: Select Displays in the pop-up window.


Step 3: Click the Night Shift tab in the following pop-up window.

Here, you can configure when Night Shift automatically runs, turn it on until the next sunrise, and set your preferred color temperature. For scheduling, you can let MacOS turn it on and off at sunset and sunrise based on your location, or you can set a custom schedule.

As with Windows 10’s Night Light feature, Apple’s Night Shift makes your display’s colors warmer and reduces the amount of emitted blue light. Give it a try to see if it improves your sleep habits and lets you be healthier, more productive, and generally a happier Mac user.



Devices based on Google’s Chrome OS have a built-in blue light filter called Night Light. The simplest way to enable this feature is to click on the System Clock followed by the Night Light button on the pop-up menu. The screen is automatically washed with a dark amber hue.

For more control over Night Light, do the following:

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Step 1: Click on the System Clock and select the Gear icon on the pop-up menu. This opens the Settings window.

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Step 2: Select Device listed on the left.

Step 3: Select Displays listed on the right.

Step 4: Click on the toggle located to the right of Night Light to enable this feature.

Step 5: Move the slider between Cooler and Warmer to adjust the blue light level.

Step 6: Next to Schedule, click the Down Arrow to select Never, Sunrise to Sunset, or Custom.

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Step 7: If you select Custom, a timeline appears from 6 p.m. to 6 p.m. Select the duration by moving the start and stop times accordingly.

External displays

While you can change the level of blue light on the software side, external monitors may include a blue light filter you can manage with integrated On Screen Display (OCD) controls.

For instance, press the OCD button on Acer’s SB220Q 21.5-inch display, and a control panel appears on the screen separate from the PC’s desktop. As shown above, it includes options for adjusting the brightness, sharpness, and blue light adjustment. You can manually switch between 50% to 80%. You will get more blue light as you increase this value.

Overall, it’s more convenient to adjust the blue light level directly through your computer’s operating system than doing so on the monitor. On the other hand, if you use the same monitor for several devices, altering the settings on the side of your monitor may be a far more straightforward approach.

Third-party alternatives


F.lux is an innovative third-party alternative to adjusting your monitor’s color levels. This tech carefully monitors the sunlight level in your area and adjusts your screen’s color temperature accordingly. It’s available for free for Windows, MacOS, and Linux. You can also use it to adjust the lights in your home by pairing it with a smart lighting system. You can turn the feature off whenever you want by toggling a switch.

Iris Mini

The Iris Mini is an impressive, ultra-lightweight blue-light filter application. It’s a streamlined option; there are no UI, buttons, or extra steps. The feature can automatically adjust the color on your monitor to minimize effects of glare or blue light. You can change settings manually or rely on Iris Mini’s automatic feature. The automatic mode evaluates the time of day and adjusts colors accordingly. There are versions available for Windows, Mac, and Linux.

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The importance of internet filtering

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1. Increases in productivity. The websites that cause diversion of staff, employee, or student's attention are blocked, and this, in turn, leaves them with no option but to focus on their work hence increasing productivity.

2. Blocking inappropriate content. Specifically, in educational institutes, it's of utmost importance to keep children away from inappropriate content. Applying internet filtering software will ensure that children and students are viewing or visiting age-appropriate content and websites. Blocking websites that are not age-appropriate is one of the biggest advantages of internet filtering.

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3. Safety. Internet filters ensure the space your kid surfing is a safe place. With all the cybercrime taking place on the internet through cyberbullying and cyber predators in chat rooms, social networking sites, and other platforms that your kids may browse, it is increasingly important to protect your kids. Through internet filtering, you are also able to block specific sites that your kids should not visit.

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4. Protect resources. Too much of uploading and downloading may require a lot of memory space. You can set your internet filtering software to download to block any download from peer networks. You can also block specified websites that require a lot of memory space.

What is an internet filter?

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An Internet content filter is a special program that is designed to limit the website material which can be viewed on a particular device. This program makes use of technical strategies to block certain content and allow the rest to be viewed. Some examples of these strategies include blacklisting, white-listing, MITM processes, content flagging, and more. web filter is customizable. This means that you can change its settings so as to determine the exact websites that should be blocked as well as the ones that can be viewed. Web filtering software is ideal for children. This is so as to protect them from harmful digital material delivered by inappropriate sources. Examples of these are adult sites, racial sites, and extremist websites.

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This software can also be used to limit the use of specific Internet resources. For example, a content filter program can be used to limit the amount of time that a child spends on social media. In addition to that, some of these applications have special features. They can log web activity, send you an alert in case your child attempts to visit a black-listed site and more. Therefore, the Internet content filter applications are ideal for use in families today to protect the children.

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Why use a web filter?

The main reason why you would need to use an Internet content filter is to protect your loved ones. Just like the real world, the Internet has many hazardous locations. It also has a variety of dangerous people lurking in social media platforms and online chat rooms. An Internet content filter can prevent your children from visiting these locations. As such, they are protected from the harmful effects of such websites. Furthermore, the special surveillance features of the Internet content filter programs can assist you to know the digital behavior of your child. These are two main reasons why you need to use an Internet content filter.