Click to Enter Fullscreen Test
Check for dead pixels, bright spots and dark spots
White•#FFFFFF
Press F for Fullscreen
Screen Info
Desktop MonitorResolution
1920 × 1080Pixel Ratio DPR
1xColor Depth
24-bitRefresh Rate
~60 HzColor Picker
White
#FFFFFFShortcuts
← →
Switch test colorF
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Custom Color
Free Online Screen Tester
No downloads required. Run screen tests directly in your browser with pixel-perfect fullscreen precision.
Pixel-Level Dead Pixel Detection
Cycle through primary colors and pure white/black to uncover stuck subpixels, dead pixels, and tint shifts.
Color & Greyscale Analysis
Multi-step neutral grays reveal backlight bleed, corner vignetting, and dirty screen effect (DSE).
Fast & Private No Uploads
100% executes within local browser memory without transmitting any telemetry, supporting TVs and desktop displays.