DEAD PIXEL TEST

Dead Pixel Test Manual

Use this manual to run the nine-color screen inspection, enter or leave fullscreen, navigate safely, and understand what the browser can and cannot tell you about the physical display.

Prepare the display

Clean the screen using the manufacturer's recommended method and move the browser window onto the display you want to inspect.

Start the test

Choose Start dead pixel test. The app begins on Black and asks the browser to enter fullscreen. If fullscreen is rejected, the test remains usable inside the browser window.

Navigate colors

Use Previous/Next, tap or click the test field, Arrow Left/Right, Space, Home, or End. Held keys are ignored, and accepted color changes are deliberately throttled so the app does not create rapid flashing.

Inspect every field

Look across the complete display on black, white, red, green, blue, cyan, magenta, yellow, and gray. Recheck any suspicious location on several fields.

Exit

Choose Exit test. If fullscreen is active, the app asks the browser to leave fullscreen and restores the normal page.

Limits

The app does not automatically detect, count, repair, score, or certify physical display pixels. It does not test refresh rate, touch input, color calibration, or warranty eligibility.