All screen tests
20 free, browser-based tools. Pick a category below.
Panel & Backlight
Dead Pixel TestFull-screen solid colors to find dead, stuck, and bright pixels.Backlight BleedReveal LCD backlight leakage and IPS glow in a dark room.Brightness Uniformity50% gray field and a 9-zone grid to spot uneven backlighting.Blooming TestA bright object on black to judge local-dimming halos.Burn-in TestFull-screen fields and a checkerboard to reveal OLED burn-in.Contrast TestBlack-and-white checkerboards to judge black/white separation.Black Level TestNear-black steps to see how dark your panel really goes.Viewing Angle TestGrey steps and color bars to reveal off-axis color/brightness shift.
Color & Calibration
Color TestDisplay pure black, white, red, green, blue and more, full-screen.Black ScreenA pure black full-screen for backlight, dust, and OLED checks.White ScreenA pure white full-screen for cleaning, lighting, and uniformity.Greyscale Test256-step ramp and smooth gradient to reveal color banding.Color GradientSmooth RGB gradients to judge color transitions and gamut.Gamma TestStripe-vs-patch pattern to read your display's gamma.