Display & Monitor Diagnostics

Check for dead pixels, screen uniformity, color banding, and panel calibration errors directly in fullscreen mode.

Pure Red

Check for dead/stuck red subpixels.

Pure Green

Check for dead/stuck green subpixels.

Pure Blue

Check for dead/stuck blue subpixels.

Pure Cyan

Secondary color evaluation.

Pure Magenta

Secondary color evaluation.

Pure Yellow

Secondary color evaluation.

Pure Black

Check backlight bleeding & IPS glow.

Pure White

Check screen brightness uniformity.

25% Gray (Dark)

Check dark gray uniformity levels.

50% Gray (Medium)

Standard panel uniformity (DSE) checker.

75% Gray (Light)

Inspect light gray shifts & uniformity.

Custom Color

Test any custom color in fullscreen.

Geometry Grid

Check for scaling, alignment, and optical distortion.

Checkerboard Contrast

Check local panel contrast and black/white bleed.

Convergence Crosshair

Verify center alignment and geometric aspect ratio.

Color Bars

Standard SMPTE-style bars to inspect color representation.

Smooth Grayscale

Evaluate neutral panel transitions & color bands.

Red Gradient

Inspect red color rendering and saturation levels.

Green Gradient

Inspect green color rendering and saturation levels.

Blue Gradient

Inspect blue color rendering and saturation levels.

Display Tester
Dead Pixel Test
Checking display pixels for defects.
Press SPACE/Arrows to navigate. Hover cursor at top for options. Press ESC to quit.