How to use a blue light filter on your PC or Mac

In today's digital age, many of us spend countless hours in front of screens, whether it's for work, entertainment, or staying connected. However, prolonged exposure to the blue light emitted by these screens can lead to eye strain and disrupt our sleep patterns. To mitigate these effects, using a blue light filter on your PC or Mac can be beneficial. In this article, we will guide you on how to set up and use a blue light filter on your computer to help protect your eyes and promote better sleep.

  1. Built-in Options:

Both PC and Mac operating systems now offer built-in features to reduce blue light emission. Here's how to enable them:

   - PC (Windows):

     - Windows 10: Go to "Settings" by clicking the Start button and selecting the gear icon. Choose "System" and then "Display." Scroll down and click on "Night light settings." Toggle the "Night light" switch to enable it. You can adjust the color temperature and schedule according to your preferences.

     - Windows 7 or 8: Unfortunately, these versions don't have a built-in blue light filter feature. However, you can download third-party software like f.lux or Iris, which provide similar functionalities.

   - Mac:

     - macOS: Apple introduced the Night Shift feature in macOS 10.12.4 and later versions. Click on the Apple menu, select "System Preferences," and choose "Displays." Navigate to the "Night Shift" tab and customize the color temperature or schedule based on your preferences.


  1. Third-Party Applications:

If your operating system doesn't offer a built-in blue light filter, you can turn to third-party applications that specialize in reducing blue light emissions. Some popular options include f.lux and Iris. These applications provide additional features and customization options. Visit their respective websites, download and install the software, and follow the instructions to configure the blue light filter based on your needs.

  1. Mobile Devices:

Don't forget that smartphones and tablets also emit blue light. Most mobile operating systems, such as iOS and Android, offer built-in blue light filter options. Look for the display or accessibility settings on your device to enable and customize the filter according to your preferences.

Using a blue light filter on your PC or Mac is a simple yet effective way to reduce eye strain and minimize the disruption of your sleep patterns caused by excessive blue light exposure. By taking advantage of the built-in features or installing third-party applications, you can create a more eye-friendly environment while using your computer or mobile devices.


Remember, while blue light filters can help, it's still crucial to practice healthy screen habits, take regular breaks, and maintain proper posture when using electronic devices. Prioritizing your eye health will contribute to overall well-being in the digital age.



- American Academy of Ophthalmology

- How-To Geek

- Macworld