Dead Pixel Test 🖥️
Dead pixels are defective pixels that do not display as expected on a screen. DeadPixelTest.org provides you with the simplest way to perform a dead pixel test and check if you have any dead or stuck pixel on your screen. To run a dead pixel test, follow these three simple steps:
1. Clean your computer screen 🖥️
Make sure your screen is almost perfectly clean and does not have any dust or dirt that you may mistake for a dead pixel.
2. Launch our dead pixel test 🚀
Our dead pixel test will open in a new window and prompt you to go full screen. You'll be able to run through several colors by clicking on the screen or using your arrows.
3. Carefully inspect your screen for dead pixels 🕵🏻
If any dot on your screen is not displaying the color that the rest of your screen is showing, this could be a dead pixel or a stuck pixel.
What is a pixel?
All screens are made of a large number of dots that turn on or off, and can show a particular colors. Simply put, these dots are pixels. This image shows you a macro shot of a computer screen on which you can see the individual pixels constituting the image. Each pixel is constituted of three sub-pixels that show red, blue or green with various intensities to make the colors appear.
What is a dead pixel?
Sometimes, pixels can be malfunctioning. A dead pixel is a pixel that does not turn on when needed, resulting in a permanent black dot your screen. It should look like the black dot on this image.
What is the difference between dead pixels and stuck pixels?
There is a difference between dead pixels and stuck pixels. Some malfunctioning pixels can be stuck to a particular color. This can be due to one or several of their sub-pixels to be blocked on a specific color. Depending on the condition of its sub-pixels, a stuck pixel may display the right color on some pictures, but can appear as an odd bright spot on some others. For instance, if the green sub-pixel is stuck to 100%, a white full screen image will display correctly, but you should see a green dot when displaying a black image. You may have better chances at attempting to fix a stuck pixel than a dead pixel.
I have dead pixels on my screen, what can I do?
If you find one or a couple dead pixels on your screens after performing your dead pixel test, there are a few things that you might want to try:
- Check the warranty and contact the manufacturer and/or the seller. Depending on how old your screen or device is, and the warranty conditions of the organisation. You might be able to get your screen replaced if you have a dead pixel or a stuck pixel on it.
- Attempt a dead pixel fix. On DeadPixelTest.org, we have built a dead pixel fix tool that will display changing colors on your screen at a very high refresh rate to attempt to revive your dead or stuck pixels.
