Display & Screen Diagnostic Tools
A comprehensive browser diagnostic suite for monitors, notebooks, mobile displays, and webcams.
Dead Pixel Test
Scan your screen with solid color cycles to detect inactive black subpixels on LED, LCD, or OLED panels.
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Stuck Pixel Test
Detect pixels stuck on static primary colors and trigger the high-frequency stimulator grid to attempt to revive them.
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Screen Resolution & DPR
Verify viewport size, native screen resolution (estimate), Device Pixel Ratio (DPR), and browser zoom factor.
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Refresh Rate (Hz) & Motion
Estimate your display refresh rate in Hz and analyze smooth motion clarity with our customized UFO tracker simulation.
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Backlight Bleed & IPS Glow
Spot light leakage around bezel borders or panels with pure dark grey and black fullscreen tests.
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Grayscale Gradient Test
Inspect smooth 256-level black-to-white transitions, color banding, and shadow/highlight clipping levels.
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Webcam & Microphone Test
Verify WebRTC camera resolution, frame rate (FPS), and microphone volume levels in real-time client-side.
Launch Tool →Complete Screen Test
A unified hub to run a full hardware inspection. Step-by-step display health diagnostics.
Launch Hub →Monitor Test
Dedicated testing interface tailored for high refresh rate monitors, gaming screens, and desktop panels.
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