Dead Pixel Test
Free Dead Pixel Check
TheDeadPixelTest.com offers the easiest Dead Pixel Test and Free Dead Pixel Check to quickly find dead, bad, or stuck pixels on your screen.
Test your monitor online in seconds — 100% free, no download required!
Follow these three easy steps to perform a Free Dead Pixel Check and examine your screen:
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
Click on any color below to start our Free Dead Pixel Check. The test will go full screen automatically, and you can cycle through different colors by clicking or using arrow keys.
3. Carefully inspect your screen for dead pixels
Look for any dots that don't match the current color. Press ESC to exit the Dead Pixel Test when finished.
Launch Free Dead Pixel Check
(Click on any color to test your screen for dead pixels)
What is a Pixel?
All screens are made up of countless tiny dots called pixels, which can turn on or off and display different colors. Simply put, these dots are pixels. In this macro image of a computer screen, you can clearly see individual pixels that form the image. Each pixel consists of three sub-pixels that show red, green, and blue at varying intensities, creating the full range of colors.
A macro image of a computer screen showing sub-pixels
What is a Dead Pixel?
Sometimes, pixels may malfunction. A dead pixel is a pixel that fails to turn on when it should, appearing as a permanent black dot on your screen. This is exactly what a black dot like this represents.
Performing a Dead Pixel Test is the easiest way to spot these pixels, and with our Free Dead Pixel Check, you can quickly identify any dead pixels on your screen without any cost.
An image of a dead pixel on a screen
Dead Pixels vs. Stuck Pixels
It's important to distinguish between dead pixels and stuck pixels. Some malfunctioning pixels can be stuck on a particular color due to one or more of their sub-pixels being blocked. A stuck pixel may show the correct color in some images, but appear as an unusual bright spot in others. For example, if the green sub-pixel is stuck at 100%, a white screen may display correctly, but a black screen will reveal a green dot.
While dead pixels are permanent, stuck pixels sometimes can be fixed. Using a Dead Pixel Test can help you detect both stuck and dead pixels, and our Free Dead Pixel Check gives you a simple way to inspect your screen immediately.
I Have Dead Pixels on My Screen — What Can I Do?
If you notice one or more dead pixels on your display after running a Dead Pixel Test, here are a few things you can try:
Check your warranty and contact the manufacturer or seller.
Depending on the age of your screen or device, and the warranty policy, you may be eligible for a replacement if dead pixels or stuck pixels are found.
Try a Dead Pixel Fix.
At thedeadpixeltest.com, we provide a built-in dead pixel fix tool that flashes rapidly changing colors on your screen. This method may help revive dead or stuck pixels and restore your display.