DeadPixelTest.org is the simplest way to check if you have any dead pixels on your screen. Our dead pixel test app is an easy and convenient way for you to check if your screen has dead pixels. Our test will display various colors and patterns on your screen, allowing you to identify any dead pixels that may be present. Pick a color to go full screen and follow the instructions. If you're browsing from a smartphone or a tablet, please run one of our dead pixel test videos instead.
Run a dead pixel test on DeadPixelTest.org, the simplest way to check your screen for dead pixels.
To run a dead pixel test on DeadPixelTest.org, simply follow these steps:
Simply put, a pixel is a dot on your screen that turns on or off and changes color according to the image that your device wants to display. In reality, a pixel is made of three sub pixels - one red, one green and one blue. Each of them can light up to a certain percentage to allow your pixel to display every color it needs. For instance, if all three sub pixels are lit to full power, your pixel will show white. If all are turned off, it will display black. If only the red sub pixel and the blue one are lit to full power, your pixel will show pink…
Sometimes, it will occurs that pixels can malfunction. Once again, in reality, pixel malfunctions are caused by sub pixels defects. One, two and even all three of them can be damaged. Sub pixels can either be completely broken so that they don't light up anymore, or they can be stuck and permanently lit. Is thus necessary to distinguish several cases:
You may find more information on the topic on our What is a dead pixel page.
There is no secret, running a dead pixel test on your screen requires you to carefully inspect it inch-by-inch. Generally, the preferred method is to display unified colors on your full screen to check for any odd pixel. An consistently black pixel can be interpreted as a dead pixel, while a pixel stuck on a single color is generally referred to as a stuck pixel. Our dead pixel test above eases the process for you, allowing your web browser to go full screen and to dispay unified colors on your monitor. Please note that there is no programmatic way to run a dead pixel test. That means no program can accurately tell you whether or not you have a dead pixel on your monitor. The reason is simple: dead pixels or stuck pixels are mechanical defects of your screen.
To test your screen for dead pixels, you will need to inspect it carefully using a solid color screen. Start by making sure your screen is clean, as dust or dirt can be mistaken for dead pixels. You can do this by gently wiping the screen with a soft cloth.
Next, set your screen to display a single color, either by using a dead pixel testing app or video. Carefully inspect each color displayed on your screen, keeping in mind that a dead pixel will appear black and a stuck pixel will appear as a specific color.
It is important to note that a pixel is composed of three sub-pixels - red, green, and blue - that light up to create different colors. A dead pixel occurs when all three sub-pixels are not functioning, resulting in a black dot on the screen. A stuck pixel occurs when one or more sub-pixels are not functioning properly, resulting in a dot stuck on a specific color.
Once you have completed the test, you can compare your results to others to determine if you have a high number of dead pixels or if your screen is functioning properly.
First, it is necessary to say that you have way more chances to fix stuck pixels than dead pixels. Stuck pixels can technically still light up, while dead pixels seemingly cannot. In both cases, there are a few things worth trying.
DeadPixelTest.org have collected a lot of statistics since it was launched in 2021. After performing a dead pixel test on our website, users can state how their test went, and report any dead pixels. Therefore, we are able to let you know which brands produce the safest buying option in terms of dead pixels. Please acknowledge that our data rely on our users' inputs and are for indicative purposes only. They don't guarantee anything about the conditions of the screens you will buy in terms of dead pixels.