Screen Tester
Tap a patch, then Fullscreen fills the monitor with that color so you can look for stuck pixels or uneven backlight. Press Esc or use Fullscreen again to exit.
Dot grid (windowed)
White
Black
Red
Green
Blue
Cyan
Magenta
Yellow
Gray
Orange
Purple
How to use
- Tap any color chip, then Fullscreen color to fill the panel edge-to-edge.
- Use the dot lattice (window or fullscreen a dark pattern) from a moderate distance.
- Exit fullscreen with Esc or repeat the fullscreen action when supported.
- Sweep your gaze gently—avoid staring at bright patches in dark rooms longer than comfortable.
FAQ
Can this heal stuck pixels?
No. Physics-level defects need service; color cycling only helps visibility during inspection.
Why does OLED look tinted on solid colors?
Manufacturing variance, coatings, calibration, automatic brightness, and HDR tone mapping alter perception—compare under controlled lighting.
Introduction
Screen Tester mirrors classic service-menu patterns inside the browser: primaries and secondaries, neutral gray, checker dot guidance, plus one-tap fullscreen so you can walk the bezel looking for hotspots or anomalies.
Purpose
- Spot stuck/on subpixels, vertical bands, dirty screen effect, or early burn-in predispositions.
- Share a single URL with teammates remoting into lab benches without installers.
Key Features
- Ten solid swatches spanning primaries plus orange/purple complements.
- Dot grid overlay framed for close inspection.
- Fullscreen color invocation per chip for immersive passes.