Dead Pixel Checker
Detect dead or stuck pixels on your monitor by cycling through 8 solid-color fullscreen tests. Any pixel that doesn't match the background color indicates a defect.
The test fills your entire screen with one solid color at a time. Scan your screen carefully for any dot that looks different — that's a dead or stuck pixel.
Current: — | —
Click or press → / Space to advance · ← to go back · Esc to exit
How to Use
- Click Start Full-Screen Test to enter fullscreen mode.
- Your screen turns solid black first — look carefully for any pixel that isn't black.
- Click or press → to advance through all 8 colors.
- Press Esc to exit when done.
Features
- 8 solid-color test screens: black, white, red, green, blue, cyan, magenta, yellow
- Fullscreen mode for maximum coverage
- Click or keyboard navigation between colors
- Works on any monitor, laptop, or external display
Online dead pixel test: practical uses
Use online dead pixel test when you need a fast, clear, private result without creating an account. This page also supports related needs like online dead pixel test, online dead pixel test checker so you can choose the right workflow.
When it helps
- Best for: Checking your browser, device, network, screen, microphone, camera, keyboard, or password strength quickly.
- Helpful details: Review permission prompts carefully, then use the result and troubleshooting notes to narrow down the issue.
- Next step: Use another diagnostic when the problem involves connection speed, display size, input devices, pixels, or browser data.
For the next step, try Internet Speed Test, Webcam Tester, Microphone Tester, Keyboard Tester.
Frequently Asked Questions
What is a dead pixel vs a stuck pixel?
A dead pixel is permanently off (appears black on any background). A stuck pixel is permanently on in one color (e.g., always red). Dead pixels typically cannot be fixed; stuck pixels sometimes recover with pixel-refreshing tools or pressure techniques.
How many dead pixels is acceptable?
Monitor manufacturers use ISO 13406-2 standard which allows Class II monitors to have up to 2 completely dead pixels. However, many retailers accept returns for any dead pixels, especially in the center of the screen.
