When I’m working late or testing a screen after tweaking brightness and contrast, I’ve found that using a full black display can be surprisingly helpful. Instead of leaving random tabs open, I switch to a Black Screen Tool to reduce visual noise and give my eyes a break while staying focused. It’s also handy for checking backlight bleeding or dead pixels without installing any extra software. Simple tools like this don’t look flashy, but they quietly improve concentration and make screen testing feel more intentional rather than distracting.