Professional Display Testing Tools

Free online tools to test monitors, laptops, phones and TVs for dead pixels and display defects.

Complete Testing Suite

Find bright dead pixels and backlight bleeding in seconds.

Detect dark dead pixels and brightness uniformity issues.

Multi-color test detects over 90% of pixel defects.

Attempt to revive stuck pixels with rapid color flashing.

Check RGB color accuracy and gradient performance.

Test brightness uniformity and backlight consistency.

Evaluate contrast ratio and black level performance.

Complete monitor diagnostics with test patterns.

Prevent OLED burn-in with screen cycling tools.

Check real refresh rate and motion smoothness.

Measure ghosting and pixel response speed.

Detect resolution and pixel density automatically.