Select a color and go full screen to run a dead pixel test on your screen now.

What Is the Dead Pixel Test?

The dead pixel test is an AI based tool that lets users check for any dead pixels present on their monitor screen. Dead pixels are nothing but faulty pixels on the display that fails to change their color and appears as a stain of dirt present over the monitor.

The tool has an easy-to-use working algorithm. All you have to do is click on 'Start Monitor Test' and look for the dead pixels on various colored screens. So run the Dead Pixel Test today to find dead and stuck pixels on your screen.

How To Use the Dead Pixel Test?


Launch Dead Pixel Finder Tool

Firstly, go to the Device Checker website and navigate to the dead pixel test page. As this is a web-based tool, it will hardly take a few seconds to open the test.


Clean Your Display

After launching the tool, the foremost essential thing is to clean your display with a lint-free cloth. We suggest a lint-free cloth because it does not leave any thread residue and makes your monitor squeaky clean. If even a tiny dust particle is stuck on your monitor, you might mistake it for a dead pixel.


Find Dead Pixel

The final step is to find dead pixels on your screen by clicking on the 'Start Monitor Test' button. You can either use your keyboard button or the screen's arrows to switch colors. Once done, press 'Esc' on your keyboard to return to the home screen.


Changes Colors

There are different types of dead pixels, such as black, white, and colored. So, you will have to test your screen on multiple screens. Please start with the white screen and look for black dead pixels; they are most noticeable. Likewise, keep switching between the primary colors and look for the 'dot' on your screen.

Causes Of Dead Pixel

The following points might be the cause behind the dead pixels on your screen:

Failed Power Connection

The most common reason behind a dead pixel is a failed power connection. Pixel tends to change color with different frames, which requires a stable power connection. Millions of pixels on your screen use equal amounts of power to light. If the power connection to even a single pixel is cut-off, it results in dead pixels.

Manufacturing Defect

Another customary cause of dead pixels is manufacturing defects. A component that is flawed or poorly built will malfunction or completely fail. However, you may miss the fault at the time of purchase and notice after losing your system for a few hours.

Physical Damaged

Finally, physical damage during shipment or after starting the system can cause dead or stuck pixels to appear. For instance, when a display device is bumped into or knocked over, the power connection to the pixels may get harmed, resulting in a dead pixel.


Following are some unique features of our dead pixel checker that makes it stand out among others:

feature 1

One Tool For All Screen

Yes, you heard it right! Our dead pixel finder is designed to suit all devices, including laptops, smartphones, PC, tablets, etc. You can spot the dead pixels hassle-free on your screen without installing the tool of downloading any additional files. Launch the dead pixel test on your browser to get started!

feature 2

Easy & Free

This dead pixel checker is 100% free and does not come with any additional fees or hidden costs. In less than 2 minutes, you get updated with your monitor screen's status. This tool is suitable for finding all types of dead pixels, including white, black, and colored.

feature 3

Safe To Use

As we have already mentioned, this tool is web-based, and you will not require to download/install it; this makes it safe to use. As this test is conducted on your browser, there is no space for malware or virus installation on your system.

feature 4

100% Accurate Results

This dead pixel test provides 100% accurate results. There is no chance of any misleading factors. The only condition is to clean your screen thoroughly before the test. Otherwise, you may mistake a stuck particle for a dead pixel.

Dead Pixel and Stuck Pixel: How Are They Different?

People get confused between a dead pixel and a stuck pixel. To know the difference, you must know about the pixels first. Pixel is a dot on your screen that uses the power to change color with different frames or turn on/off. Pixels are made of three solid colors: green, red, and blue. When all these are lit together due to malfunctioning, it results in a white pixel. If all three of them are turned off simultaneously, it results in black pixels. And if some random color shuts, this results in a colored pixel.

The difference between the Dead pixel and the Stuck pixel.

The dead or stuck pixels have some minor differences. A dead pixel is an irreparably broken pixel that does not receive electricity, frequently producing a black 'Dot' on your monitor screen. Dead pixels are mostly permanent, and only some parts are repairable.

In contrast to dead pixels, stuck pixels maintain their color (red, green, blue) from image to image. However, stuck pixels are not always present, unlike dead pixels, and may eventually vanish. Stuck pixels always receive power, which is why they do not change their color with screens.

How To Fix Dead Pixels?

There is no way of getting permanently rid of the dead pixels. However, some methods can help prevent dead pixels from spreading to neighboring pixels.

Here’s how:

Using Pressure Method

Firstly, you can try the pressure method, aka Screen Massage.

Here's how:

  1. Mark the locations of the dead pixels with a reusable post-it note, then turn the LCD panel off.
  2. Wet a cloth. Use one finger to apply some pressure to the location of the dead pixel.
  3. Restart the LCD while maintaining pressure on the area.
  4. Release the screen's pressure. The dead pixels will now stop spreading.

Using Tapping Method

The following fix is to try the tapping method. The tapping method is easier than the pressure method but if you tap forcefully, it may result in permanent damage.

Here’s how you can try the tapping method:

  1. Gently tap on the dead pixel using the back of your pen or any small, blunt item.
  2. Wherever you tapped, you would notice a white area. If not, press the button a bit harder.
  3. Continue tapping, pressing a little harder each time. It should take only 5–10 taps to complete.

Use JScreenFix

A professional way to get rid of the dead pixels is by using an online dead pixel fixer tool. And right now, the JScreenFix is one of the most effective online dead pixel fixer tools. Unlike stuck pixels, dead pixels cannot be removed permanently.

This JscreenFix tool helps to remove the stuck pixels permanently, and you can also try it in case of dead pixels. It is compatible with LCD and OLED screens and doesn't require downloading or installing software.

Check For Warranty

No matter what the cause is behind the dead pixels in your screen, if it is in warranty, this issue might be fixed for free. If your screen also has 1-2 dead pixels, the monitor is most unlikely to be replaced. However, if the pixels are spreading with passing days, you can have it fixed or ask for a replacement during the warranty period.


As a user, there is no direct way to fix the dead pixels permanently. Because most of the time, the dead pixels are caused due to manufacturing defect power or loose power connection. The only thing left to do at that point is to check your screen's warranty and check if dead pixels are covered in the benefits.

Yes, the dead pixels may spread in some cases, resulting in a 'Hole' on your LCD/OLED screen.

An extended warranty may occasionally cover dead pixels. Even yet, some extended warranties do cover dead pixels. You can speak with customer service to learn more about the specifics.