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One of the most obvious things that can show the strain of being at your computer for a period of time is your eyes. It doesn’t take a lot for a badly configured monitor or laptop screen to cause problems and put extra strain on your eyes because brightness or contrast settings are set too high. Proper configuration can make viewing more comfortable, especially you are at your computer for prolonged periods of time.

Most monitors should have controls to adjust these types of settings but that isn’t always the case. An old Dell Studio One 1909 desktop we have here, is one such system without external controls for brightness and contrast. Laptops and netbooks should have a dedicated Fn key combination or utility from the manufacturer for brightness. Windows sometimes has a brightness slider in the notification area or the system power plan.

If you don’t have or cannot find brightness and contrast controls to adjust the display to your liking, an option is using a third party tool. Here’s a selection of 10 free programs to adjust the brightness, contrast, gamma or color temperature settings of your computer screen.

ClickMonitorDDC is probably the most powerful utility of its type and it adjusts the real settings of your monitor. By default, it shows sliders for brightness, contrast, saturation/vibrance, monitor audio volume, and device audio volume. This can be expanded to include red, green and blue sliders if your monitor has a User profile. If available, the User profile can be selected from the top drop down in the lower left corner.

If you are looking for a simple slider to adjust screen brightness and require no extra functions or features, this is a useful option. Despite the name, Win10 Brightness Slider also works on Windows 7 (needs .NET Framework 4 or higher) and Windows 8.1, is open source and a standalone executable.

The program just sits as an icon in the tray notification area and left clicking on it will popup the brightness slider. A second or third slider will be available if you have a multiple monitor setup. DDC/CI is supported and there’s a run on startup option in the icon’s context menu. Make sure to put the program in a permanent location before enabling run on start as the tool will be launched from its current location.

Gamma Panel actually dates way back to 2002 but still seems to work fine in Windows 10. It should be good for users who want to change a bit more than just the standard brightness of their display. In addition to brightness, Gamma Panel can also adjust gamma and contrast with the added ability to allow each of the Red, Green and Blue colors to be tweaked individually or all together.

Windows 10 has a built-in display temperature feature called Night Light. f.lux is a similar but more feature rich tool that can adjust the color and brightness of your screen depending on the time of day and light condition of the local environment. Your location can be entered during the first run of the program, this can be a city name, a zipcode or coordinates (if you know them).

ScreenBright is a free and portable tool that can adjust the brightness, contrast, color luminance and color temperature of your display. There is a slight drawback of the program needing a DDC/CI or USB-control compatible display to work, which not all monitors or laptop screens will have. Usage is simple and you adjust the sliders then click Save when you’re happy with the result.

In addition to brightness, contrast, and luminance, there’s a vertical slider that affects green levels while the horizontal slider affects color temperature. There is no reset option in ScreenBright so make sure you note down the default settings before you start. ScreenBright also has support for command line arguments so you can use it in shortcuts, scripts or even set up a scheduled task.

This doesn"t change the hardware brightness as DDC does, so you have to manually set the monitor"s brightness and contrast (using the monitor physical buttons) to the highest possible values that look good for your monitor.

Conveniently, Windows comes with its down display calibration tool. Previously part of the Control Panel, Microsoft moved it to its own standalone app in Windows 11.

The tool will take you through basic color settings, brightness and contrast controls, and an RGB color balance adjustment. When you"re done, you can opt to start the ClearType Text Tuner "to ensure that text appears correctly."

Photo Friday is a photography site. Think of the challenges involved in adjusting the brightness and contrast of a shot, and you get the reason you should calibrate your monitor. So, head to the link for their monitor calibration tool beneath the homepage, or hit the link above.

The site offers this simple one-page monitor calibration tool to adjust the brightness and contrast of your screen thanks to the gray scale tones. The idea is to tweak the monitor settings (or buttons) so that you can clearly distinguish the transition of tones from true black to true white. After calibration, the blacks should look black and without any hint of gray.

The Lagom LCD Monitor Test Pages are a far more comprehensive set of tools than Photo Friday. The site includes a series of test patterns that start from checking contrast to checking for response times of your monitor. It is recommended to go through the tests in the order they are placed.

For instance, use the first few images to check brightness, contrast, and sharpness. With those set, use a latter test like the “Viewing Angle” to see if the display changes brightness or colors in the corners.

For a beginner, it might seem overwhelming. But, the test patterns come with helpful explanations. The developer also states that you can put the images on a USB drive and try them in the computer store when shopping for an LCD monitor. A 120 KB ZIP file download is included.

The Online Monitor Test website has a range of interactive tests to fix your screen colors. The menu appears when you move your mouse to the top. It starts off with a test that checks the brightness and contrast across the B/W tonal spectrum. It is similar to the test we covered on the Photo Friday website.

The Homogeneity test helps to pinpoint damaged pixels and faulty monitors with backlight bleeding. 1:1 Pixel mapping and testing for a blurring of Text are the last two tests on the lineup. While the former is not so much an issue with LCD computer monitors, the latter is worth a tryout if you feel that screen text is not crisp enough.

Windows 10 comes with the Windows Calibrate Display Color. You can access it from Start > Control Panel > Appearance and Personalization > Display. Or, simply search from the Cortana search box with a keyword like “calibrate.”

Eye strain can be a huge issue for anyone who spends a lot of time looking at screens—whether that"s a desktop monitor, a television, or even a smartphone. Improper screen brightness settings can cause your eyes to strain, and fatigue while staring into bright screens at night can make it difficult to fall asleep.

Research has shown that exposure to blue light (the kind emitted by electronic screens) at night can disrupt your circadian rhythm, a biological process involved with sleep cycles. That"s why you should start using one of the following Android screen brightness apps. You"ll be surprised how helpful they can be.

If there"s one thing that puts CF.lumen ahead of all other brightness and screen temperature apps, it"s this: CF.lumen adjusts colors by directly manipulating gamma values rather than using a tinted transparent overlay (although an overlay option is available in the settings).

All of the automatic brightness adjustments are made according to your location and time of day. You can customize the adjustment amounts, and you can toggle some nifty options like "Force sleep mode in the dark" or "Force day mode in bright ambient light." Useful when, for example, you"re in a bright room at midnight.

Twilight is another well-known app to reduce screen brightness on your smartphone. Using sunrise and sunset times as indicators, Twilight automatically adjusts the screen temperature (how much blue light is emitted) to lessen disruption of your circadian rhythms. After sunset, Twilight dampens screen temperature using blue-light filtering and warmth intensity.

Velis is a replacement for Android"s default auto-brightness feature without all of the other bells and whistles that come with other brightness management apps. The learning curve for Velis is slightly steep, but that"s because it gives you maximum control over what you can do. Fortunately, it also comes with a setup wizard to get you going right away.

Velis gives you a graph (ambient light reading along the X-axis, screen brightness along the Y-axis) and allows you full control over what the auto-brightness graph should look like at every point. At such-and-such ambient lighting, you can set the brightness for A; at so-and-so ambient light, brightness B. Velis fills in the gaps.

Other great features you"ll find in Velis: super dimming (even darker than Android"s default minimum brightness), excluded apps (Velis won"t run when these apps are in focus), and multiple profiles for different auto-brightness graphs.

The brightness on your computer, tablet, or smartphone can quickly cause eye strain and make you uncomfortable. Night Screen is another brightness app that will help you lower your screen brightness with a few changes in your settings. It applies an overlay filter that you can adjust to darken your screen.

The Night Screen app makes it straightforward for you to set the brightness level you want. You can also use the blue light filter to improve your sleep when you finally put your phone down. Unlike many other brightness apps, you can also dim the navigation bar as well to protect your eyes better.

The widget also makes it easy to enable and disable the Night Screen app when it is not in use, but unless you purchase additional features, you will have to set the brightness level each time you launch the app.

With this brightness control app, you can effortlessly adjust your phone display screen"s brightness level. The adjustments make it easy to use your phone without straining your eyes. You can create a custom brightness plan depending on what you find most comfortable on your phone.

The levels include low, high, and normal brightness. The various brightness levels make this app ideal if you are looking for a fast and efficient utility, as you can quickly switch between plans based on the time of day or what other app you"re using.

The Light Delight app features an easy to use interface for you to reduce brightness to any level. It works by blocking blue light to lower the screen brightness, especially when using your phone at night. The app works by using color filters to help you protect your eyes from glare and other harmful effects.

With screen brightness, you might only realize how much impact it has until someone shows you. You might think the fuss over it was nonsense, but it"s worth trying some of these apps out to see for yourself. It won"t take long for your eyes to feel less fatigued and for your sleep pattern to become normalized. Don"t underestimate the usefulness of these apps!

Always wondered how to reduce your screen brightness? Or, how to dim your computer monitor, screen or display? Wonder no more. Dimmer was created for this exact task, to help you lower the computer screen brightness, so you can work with no detriment to your eyes.

By reducing the brightness of your screens, Dimmer helps to protect you from excessive light radiation which damages your eyes. It has helped to save the eyesight of thousands of people since 2007. Some say it"s better than carrots. Dimmer is designed to run on all versions of Windows in a quick, easy and intuitive way. It"s also very lightweight on system resources, ideal for everyday use.

The need for this program came about when working at night with minimum ambient light in the room. This was uncomfortable and damaging to the eyes. So one day (back in 2004) I decided to develop Dimmer to solve this problem. The monitor brightness can now be easily adjusted via a slider and/or text input controls which are very easy to use. I eventually released it to the public in 2007.

Another convenient feature is that Dimmer does not require installation. It"s a portable application. Simply extract into a folder and run. The program stores its settings into a file in the program folder (for your convenience) so the Windows Registry is not used. When no longer needed, just delete the program folder. When Dimmer runs, it will remember and dim the brightness to the level it was last used.

Supports multiple protocols to adjust brightness: DDC for external displays (brightness, contrast, volume), native Apple protocol for Apple and built-in displays, Gamma table control for software adjustment (recommended for OLED), shade control for AirPlay, Sidecar and Display Link devices.

Synchronize brightness from built-in and Apple screens - replicate Ambient light sensor and touch bar induced changes to a non-Apple external display!

Add the app to Accessibility under System Preferences » Security & Privacy » Privacy as prompted (this is required only if you wish to use the native Apple keyboard brightness and media keys - if this is not the case, you can safely skip this step).

Use your keyboard or the sliders in the app menu (a brightness symbol in the macOS menubar as shown on the screenshot above) to control your displays.

Most modern LCD displays from all major manufacturers supported implemented DDC/CI protocol via DisplayPort, HDMI, USB-C or VGA to allow for hardware backlight control.

LCD and LED Televisions usually do not implement DDC, these are supported using software alternatives to dim the image (some higher-end sets are able to translate this into hardware backlight dimming).

Some Windows 11 PCs can automatically adjust the screen brightness and contrast based on content that’s displayed on your built-in screen. For example, if you’re watching a video that has a dark scene, followed by a brighter scene (for example, one that shows a bright sunny day), the brightness and contrast may change. This is normal.

Content adaptive brightness control provides ideal brightness and contrast levels, while saving power and providing longer battery life at the same time. If these sudden brightness changes are distracting, or if you work in photo and video apps where color accuracy is important to you, you can turn this off any time. When you turn it off, it can result in shorter battery life.

In Display settings, select Brightness, then clear the Help improve battery by optimizing the content shown and brightness check box. You can select the check box to turn this back on any time.

Some Windows PCs can also adjust the screen brightness automatically based on the light around you. For more info, see Change screen brightness in Windows.

A simple way to do this would be to allow the Custom Action buttons to run shell commands, but a simple brightness slider (similar to a mobile phone) would be far nicer. Some tinkering with the ‘sudoers’ file may be needed.

Some other 3rd party screen also support brightness control, but use different shell commands, so it would be nice to adjust the brightness control commands from the config.

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Step 4: Familiarize yourself with your monitor’s display controls. They may be located on the monitor itself, on the keyboard, or within the operating system control panel.

In older versions of Windows, you can find the Color Calibration utility in the Display section of the Control Panel, which is listed under Appearance and Personalization.

Step 2: Now that you are in the calibration tool, follow the on-screen instructions to choose your display’s gamma, brightness, contrast, and color balance settings.

Step 1: In MacOS, the Display Calibrator Assistant is located in the system preferences under the Displays tab, in the Color section. If you are having trouble finding it, try entering calibrate in Spotlight to scan through your computer’s various folders and files. The results should show an option to open the utility in the System Preferences panel.

The Lagom LCD Monitor Test Pages: Handy for both online and offline use, the Lagom LCD Monitor Test Pages not only allow you to adjust various things such as contrast and response time, but also allow you to download the images as a 120KB zip file, so you can check any monitor in-store that you are thinking about purchasing.

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