Interactive Test Board
Active Screen Diagnostic Engine
Display Refresh Rate
Computed live from frame redraw speeds.
— Hz
Dead Pixel Cycler
Tests for stuck sub-pixels by cycling solid screen colors in isolated full-screen mode.
Ghosting Checker
Analyze response times and visual panel trails using a sliding high-contrast block layout.
Contrast & Calibration
Check panel black levels and color compression bounds using incremental gray bands.
Trail Visualizer (Speed Check)
6 px/f
Gray Calibration Scales
0% Brightness (Pure Black)
5% Brightness
20% Brightness
40% Brightness
60% Brightness
80% Brightness
90% Brightness
100% Brightness (Pure White)
Device Information
Detected Device
Scanning...
Detecting
Live Monitor Diagnostics
Interactive Monitor Tester
Run dead pixel, stuck pixel, backlight uniformity, and color accuracy checks directly in your browser.