Screen Tester
Free online screen and monitor tester with 28+ display tests for dead pixels, colors, brightness, contrast, gamma, and more.
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About Screen Tester
Screen Tester is a free online screen and monitor testing tool designed to help users identify common display problems directly in their browser. It provides 28+ tests for checking dead and stuck pixels, colors, gradients, brightness, contrast, gamma, sharpness, and other display characteristics.
The tool works without installation or registration, making it useful for checking new monitors, laptops, phones, TVs, and other displays. Users can run individual tests and view fullscreen test patterns to visually inspect their screen.
Screen Tester is built as a simple browser-based utility for anyone who wants to quickly check the condition and performance of their display.
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