← All tools
Screen Test
Dead pixel & color check
Cycles through solid colors full-screen to help you spot dead pixels, stuck pixels, or backlight bleed — the same method used by screen-repair technicians before starting any work on a display.
Once started: tap or click anywhere to cycle through red, green, blue, white, black and a gray gradient. Press Esc or tap "Exit" to stop.
Tap to cycle colors · Esc or tap ✕ to exit