Detect dead, stuck, or hot pixels on your display. Test with multiple colors, patterns, and gradients to identify any pixel defects — no software installation required.
Every feature designed to help you thoroughly test your display for dead, stuck, or defective pixels across all color states and patterns.
Test with solid colors, gradients, checkerboard patterns, and RGB stripes to thoroughly check your display for pixel defects.
Cycle through black, white, red, green, blue, yellow, cyan, and magenta to detect stuck or dead pixels in any color state.
Click directly on any dead or stuck pixels you find to mark and track their locations for documentation.
Enable automatic color cycling to systematically test your display without manual intervention.
Optional grid overlay helps you precisely locate and identify pixel defects across your entire screen.
Track the number of pixels checked and dead pixels found during your testing session.
Export your test results including found pixel locations, test settings, and device information for documentation.
Runs entirely in your browser. No downloads, installations, or system permissions required.
Dead Pixel Test uses fullscreen color patterns to help you identify defective pixels on your display quickly and accurately.
Choose from solid colors, gradients, checkerboard, or RGB stripe patterns to test different aspects of your display.
Click Start to fill your screen with the selected test pattern. Use fullscreen mode for best results.
Look for dead pixels (always black), stuck pixels (always one color), or hot pixels (always bright). Click on any you find to mark them.
Test multiple colors and patterns to ensure you catch all pixel defects. Use auto-cycle mode for systematic testing.
Understand the different types of pixel defects you might encounter and what they mean for your display.