Choose a test
Pick a test below and it'll run full-screen. Press Escape any time to come back here.
Dead & Stuck Pixel Check
Fill your screen with one color after another to spot dead, stuck or hot pixels.
Stuck Pixel Fix
Drag a fast-flashing square over a stuck pixel to try to free it.
Banding & Uniformity Check
A smooth black-to-white fade that shows up stepped shading and uneven patches.
Backlight Bleed Check
A black screen for checking the edges and corners for light leaking through.
Burn-in Check
A still, high-contrast pattern that shows up ghost images and burn-in.