Dead Pixel Test – Check Screen & Monitor For Dead Pixels

To tell if you have a dead pixel, run a fullscreen color test (like our online dead pixel tester). Cycle through solid colors such as black, white, red, green, and blue. A dead pixel will show up as a tiny, persistent black dot on a white or bright background because it does not receive power or light.

True dead pixels (pixels that are completely black and receive no power) are hardware failures and generally cannot be fixed by software. However, "stuck" pixels (pixels frozen on a specific color) can sometimes be revived by using screen fixing software that flashes colors rapidly, or by gently massaging the pixel area with a soft microfiber cloth.

While one dead pixel won't harm the rest of your screen, it can be annoying, especially if it is in the center of your display. Most manufacturers do not consider a single dead pixel a significant defect and require a higher count (usually 3 to 5) before offering a replacement under warranty.

Yes, in the vast majority of cases, true dead pixels are permanent. They are caused by a physical defect or transistor failure in the display panel. If a pixel is stuck (colored) rather than dead (black), it may resolve itself over time or be fixed, but a black dead pixel is typically permanent hardware damage.

A dead pixel is completely shut off, appearing as a permanent black dot regardless of what is displayed on the screen. A stuck pixel is stuck on a single sub-pixel color (usually red, green, or blue) because the transistor controls are frozen. Stuck pixels can sometimes be fixed, while dead pixels cannot.

No, dead pixels do not spread like a disease or a computer virus. A dead pixel is isolated hardware failure of a single sub-pixel or transistor. However, if your display suffered physical damage, pressure, or is aging, more dead pixels may develop over time in nearby areas.

It is rarely worth repairing a few dead pixels out of warranty, as fixing them usually requires replacing the entire display panel, which can cost almost as much as buying a new monitor or device. If your screen is still under warranty, check the manufacturer's dead pixel policy to see if you qualify for a free replacement.

True dead pixels are permanent and do not "go away" to return later. However, if you managed to fix a stuck pixel, there is a chance it could get stuck again if the screen is subjected to high heat, pressure, or if the underlying sub-pixel transistor remains weak.

Since fixing a dead pixel requires replacing the entire screen panel, the cost can range from $100 to over $600 depending on the device (e.g., smartphone vs. high-end OLED monitor). If the device is under warranty, it is free; if not, it is often more cost-effective to buy a new display.

To avoid dead pixels, handle your screens with care: avoid applying direct pressure to the panel, keep the screen clean using a soft microfiber cloth (never press hard), prevent overheating, turn off the screen when not in use, and buy displays from reputable brands with robust quality control.

To perform a dead pixel test, open an online dead pixel test website, enter fullscreen mode to hide browser UI, and cycle through solid backgrounds of Red, Green, Blue, White, and Black. This screen dead pixel test lets you spot persistent dark spots or stuck colored sub-pixels instantly.

To run a dead pixel test android check, open our online dead pixel test tool in your mobile browser (like Chrome), launch fullscreen mode, and swipe through the solid color test screens. Inspect the panel closely under different brightness levels.