Dead Pixel Test | Check Dead Pixels on Your Screen & Fix

What is Dead Pixel Test?

Dead Pixel Test allows you to check for dead or stuck pixels on the screen of your laptop, computer or mobile device. It uses 5 main colors (black, white, red, blue, green) in full screen mode to highlight pixels that are not working anymore.

How to test dead pixel on your screen?

Here are the steps to check for dead pixels on the display of your laptop, computer, or mobile device.

1. Visit darkblackscreen.com on the device you want to test dead pixels.
2. Choose the Dead Pixel Test from the top menu.
3. Now, click the colored box on the webpage that opens.
4. After clicking, your device’s display will go in full-screen mode with single color.
5. Now click on the screen or press the spacebar button to change the screen color.
6. Look for pixels that not matching the color or completely off.
7. Repeat the process for each color.

Frequently asked Questions

How do you know if a pixel is stuck or dead pixel?

Dead pixel do not turn on at all so it will be always dark while stuck pixel turn on but do not change color as they should. If a pixel stays completely black always, its dead pixel. If a pixel is stuck on a single color (red, green, or blue), its a stuck pixel.

Can you actually fix dead pixels?

Dead pixels are generally a hardware issue and cannot be fixed in most cases. However, applying gentle pressure on the area around dead pixel might make it lit up again.

How many dead pixels are acceptable?

Generally, there should not be more than 4 dead pixels for every 1 million pixels on an LCD display. Display manufacturers set different acceptable limit of dead pixels.

Do dead pixels go away?

No, dead pixels wont go away automatically. It is a permanent defect that is generally not fixable.