Dead Pixel Test
Test your screen for dead or stuck pixels. Click the button below to start the full-screen test. Instructions will be shown first, then click anywhere to cycle through colors.
Click here to open Fullscreen
Test Sequence: White → Black → Red → Green → Blue → Cyan → Magenta → Yellow
How to Use This Tool
1.
Prepare Your ScreenFor accurate results, gently wipe your screen clean of any dust or smudges.
2.
Start the TestClick the button above. Your screen will go into full-screen mode.
3.
Cycle & InspectClick anywhere on the screen to change to the next color. Examine your entire screen for dots.
4.
Exit FullscreenPress the ESC key on your keyboard at any time to exit the test.
What to Look For
Dead Pixels
Pixels that remain permanently black. Easiest to spot on a white screen.
Stuck Pixels
Pixels stuck on a single color. Visible on contrasting backgrounds.
Hot Pixels
Pixels that are permanently white. Easiest to spot on a black screen.
Frequently Asked Questions
What is a dead pixel?
A dead pixel is a picture element that fails to light up, usually appearing as a black dot on a bright background.
What is a stuck pixel?
A stuck pixel remains on one color, often red, green, or blue. Unlike a dead pixel, it may sometimes recover.
Can dead or stuck pixels be fixed?
Dead pixels are usually permanent hardware faults. Stuck pixels can sometimes improve with rapid color changes or other pixel-fixing methods.
What is the difference between stuck vs. dead pixels?
A dead pixel stays black because it does not light up. A stuck pixel stays on a single color because it is no longer changing correctly.