Shady

Shady is an incredibly useful tool for Mac users who struggle with excessively bright screens, even when the screen is at its lowest brightness setting. This small, free, and open source application is designed to make your screen more comfortable to look at by placing a semi-transparent black shade over all of your screens (if you have more than one attached), allowing you to reduce the brightness of your Mac's screen even further.

What's great about Shady is that it won't interfere with your ability to use your Mac. The shade ignores mouse clicks, so you can continue to use your computer as you normally would. If you need to interact with the app, you can switch to it via the Dock or the usual Application Switcher keyboard commands. Alternatively, you can use the Shady menu-icon on the right side of your menu bar.

When Shady is the frontmost app, you can press the Up-Arrow or Down-Arrow keys to lighten or darken the shade, respectively. The app provides a helpful reminder of these commands so that you can adjust the brightness to your liking quickly and easily.

One of the best things about Shady is that it won't do anything funky to your system. It's just a regular application that you can quit and delete if you don't want to use it anymore. Additionally, it's completely safe to use and won't damage your screens in any way.

Using Shady should help to reduce eye strain caused by excessively bright screens. However, it's important not to make the shade too dark, as this could cause you to strain your eyes even more to see what's on the screen. Overall, Shady is an incredibly useful tool that can make a big difference in the comfort of your computing experience.