Screen Tester
Free online screen tester for checking dead pixels, colors, brightness, contrast, refresh rate, and display quality.
VisitPublished on:
September 12, 2026
Pricing:
About Screen Tester
Screen Tester is a free online display testing tool that helps you check and understand your monitor, laptop, TV, or mobile screen directly from your browser.
Run a wide range of display tests including dead pixel testing, color testing, brightness, contrast, gamma calibration, refresh rate, ghosting, and other screen patterns. The site also provides display information, inspection tools, guides, and troubleshooting resources.
No software installation is required. Screen Tester works directly in a modern web browser and is designed to make display testing simple for anyone, whether you are checking a new monitor, troubleshooting an existing display, or inspecting a used screen.
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