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Free screen tools · run in your browser
Screen tests
No sign-up, no download. Nothing you test is sent anywhere.
Live
Dead pixel test
Full-screen colors with keyboard and tap controls, plus a quick stuck-pixel fixer. Monitors, laptops, phones and TVs.
Run testStuck pixel fixer
Flashes colors over one stuck pixel, with a timer.
Run testRefresh rate test
Measures your real Hz, plus motion and flicker checks.
Run testBacklight bleed test
Dark-room black, gray and white levels with a grid.
Run testBurn-in test
OLED solid colors, gradients and a retention check.
Run testYour screen, right now
Measured by your browser. Nothing is sent anywhere.
—Screen resolution
—Pixel ratio
…Refresh (est.)
—Colour gamut
