🖥️ Monitor

Test your monitor in the browser: dead and stuck pixels, color uniformity, backlight bleed, and real refresh rate, with no installation.

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Find dead and stuck pixels on any screen. Cycle full-screen solid colors in your browser (no install) and check every pixel on a monitor or phone.

Test your monitor in the browser with full-screen color patterns, gradients and a grid. Spot backlight bleed, poor uniformity and dead pixels fast.

Measure your monitor's real refresh rate in the browser. See live Hz, frame timing and stability to confirm a 60, 120, 144 or 240Hz panel runs right.