Dead Pixel Test
Click the color buttons to start the full-screen dead pixel test. Carefully inspect your screen for any pixels that are stuck on one color or don't light up. Click or press 'Esc' to exit.
How to Find Dead Pixels with Our Test
This dead pixel test is the simplest way to check a new or existing monitor. By displaying solid colors, it makes it easy to spot any pixel that isn't working as it should. A pixel defect will stand out against a contrasting background.
- Dead Pixel: A pixel that is permanently off. It will appear as a tiny black dot on all color backgrounds. This is easiest to find during the white screen portion of the test.
- Stuck Pixel: A pixel stuck on one color (red, green, or blue). This becomes obvious when viewing a background of a different color. A stuck pixel is a common issue our dead pixel test can find.
- Hot Pixel: A pixel that is permanently on, showing as a bright white dot. It is most noticeable on the black background of the test.
Frequently Asked Questions
What is a dead pixel?
A dead pixel is a pixel that fails to light up and appears as a black dot on the screen. This is different from a stuck pixel, which is stuck on a single color, or a hot pixel, which is always white. Our dead pixel test helps you identify all these types.
How reliable is an online dead pixel test?
An online dead pixel test like this one is very reliable. It simply uses your web browser to display full-screen colors, which is all that is needed to visually identify pixel defects. No software installation is required.