Screen & Display Tester
All-in-one fullscreen dead pixel inspection, smooth gradients, banding detection, refresh rate (Hz), and motion blur.
Resolution: -
Viewport: -
DPR: -
Estimated Refresh Rate: Measuring…
1. Fullscreen Display Diagnostic & Pattern Suite
Click any pattern below or press Start Fullscreen Test to inspect your display. While in fullscreen, use ← → Space or click to cycle patterns, and Esc to exit.
Solid Color Tests (Dead & Stuck Pixels, Backlight Bleed)
Black
White
Red
Green
Blue
Yellow
Cyan
Magenta
Gradients, Banding & Contrast Patterns
Grayscale
RGB Spectrum
Red Ramp
Green Ramp
Blue Ramp
16-Step Gray
Contrast Grid
Text Sharpness & Subpixel Clarity
Aa 123
Text (Dark on Light)
Aa 123
Text (Light on Dark)
2. Motion Blur & Ghosting (UFO Test)
Speed: 960 px/s
Follow moving blocks with your eyes to inspect pixel response times, trailing, and inverse ghosting.
Fast
Mid
Slow