Test pixel-level sharpness with a full-screen checkerboard pattern. Detect blurry pixels and scaling issues. Free online tool.
Alternating black and white pixels test pixel sharpness, clarity, and response.
Your eyes blend alternating pixels into average gray at normal distance.
Yes. Dead pixels are extremely visible against the checkerboard.
Test your monitor for color banding and gradient smoothness issues. Detect 6-bit, 8-bit, and 10-bit …
Detect and prevent OLED burn-in with this free tool. Moving pattern reveals ghost images on OLED, AM…
Test pixel response time with rapid black-white transitions. Detect ghosting and motion blur. Essent…
Test viewing angle performance with color bands. Check for color shifting and contrast loss at diffe…
Test for backlight bleed, clouding, and brightness uniformity with 50% gray screen. Detect hotspots …
Check monitor color accuracy with reference swatches including primaries, grays, and skin tones. Fre…
Fix stuck pixels by rapidly cycling colors. Stimulates pixel transistors. Run 20-30 minutes for best…