Dead Pixel Test – Online Check

If you see a small dot on your screen or if you have a new display, you can test for dead pixels and stuck pixels in seconds with PixelTest.net. No application is required; it works directly in your browser.

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What Is a Dead Pixel Test?

Each display contains millions of pixels. Sometimes a pixel becomes a dead pixel or a stuck pixel that shows only one color. The Pixel Test displays solid full-screen colors to help you detect these small dots with your eyes.

How to Do the Dead Pixel Test

  1. Clean the display surface — dust or smudges can mimic dead pixels or stuck pixels.
  2. Set screen brightness to medium–high and, if possible, dim the room lights.
  3. Click “Check Your Screen Now” and switch to full-screen mode.
  4. The test will show solid full-screen colors in sequence: black, white, red, green, and blue.
  5. Inspect closely: if the same dot remains visible on every color, double-check that exact spot for a dead or stuck pixel.

Note: The test does not automatically label the pixel — detection is visual and manual.

Why It Matters

Detecting dead pixels or stuck pixels early is important for returns and warranty claims on displays such as phones, monitors, and TVs. Finding the issue quickly makes resolving or replacing the screen much easier.

FAQ

Not exactly. A dead pixel doesn’t light up (often looks black). A stuck pixel is locked on a single color, like always red or green.

Truly dead pixels rarely recover. Stuck pixels sometimes respond to rapid color-cycling methods.

Yes. It runs in mobile browsers too. Full-screen mode makes spotting issues easier.

Policies vary by brand. Some accept a single pixel, others set a minimum threshold. Check your product’s warranty terms.
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