Dead Pixel Test
Check your monitor or screen for dead pixels, stuck pixels and display defects in seconds. Use full-screen solid colors to inspect every part of the panel and easily identify pixels that remain dark, display the wrong color or behave abnormally.
Note: This test runs entirely in your browser, and no data is recorded.
Avoid leaving static images on OLED screens for extended periods.
How to perform a dead pixel test
When testing your monitor, display each color in full-screen mode and carefully inspect the entire panel. On solid black, white, red, green and blue screens, points that remain fixed, display a different color or do not light up may indicate a dead pixel or a stuck pixel.
1. Start the full-screen test
Display each test color individually and begin inspecting the entire screen.
2. Check each color
Look for unusual points on black, white and primary-color backgrounds.
3. Inspect suspicious areas
Identify pixels that remain dark or stay fixed on a different color.
Frequently Asked Questions
What does the dead pixel test do?
The dead pixel test helps identify pixels on a monitor that do not light up, remain permanently dark or display incorrectly.
Are stuck pixels and dead pixels the same thing?
No. A dead pixel generally remains completely inactive, while a stuck pixel remains fixed on a particular color.
How can I tell whether my monitor has a dead pixel?
During full-screen solid-color tests, points that look different from the surrounding pixels, remain black or stay fixed on a single color may be dead or stuck pixels.
Can this test be used on phone or laptop screens?
Yes. This screen test can be used as an initial check on monitors, laptop displays, tablets, phones and other panel types.
Does this test provide a definitive result?
This page provides a quick and practical initial check. For a more detailed panel analysis, it may be useful to evaluate the screen with additional tests.