Screen Test & Dead Pixel Checker
Check your monitor, laptop, tablet or phone screen for dead pixels, stuck pixels and color display issues.
Choose a screen test color
Clean your screen first, then select a color. The test opens in full screen when your browser allows it.
Look closely across the entire display. A pixel that stays dark, bright or shows the wrong color may indicate a pixel defect. This visual test does not repair hardware.
Free Online Screen Test
EKO24.NET Screen Test displays solid colors across your screen so you can visually inspect the display for unusual pixels, spots and color inconsistencies. It runs directly in your browser and does not upload files or require an account.
How to check for dead pixels
- Clean the display gently so dust is not mistaken for a bad pixel.
- Choose Black, White, Red, Green or Blue.
- Inspect the full screen carefully from edge to edge.
- Tap or click the test screen to move to the next color.
- Press the close button or Escape when finished.
Dead pixels and stuck pixels
A dead or stuck pixel can appear as a tiny point that does not behave like the surrounding pixels. Testing several solid colors makes these small display problems easier to notice.
Frequently asked questions
Does this test work on phones?
Yes. It works in modern mobile browsers. Full-screen behavior can vary by browser and operating system.
Does EKO24.NET record my screen?
No. This tool only displays test colors in your browser and does not need camera, microphone or screen-recording permission.
Can this tool fix a dead pixel?
No. It is a visual checking tool designed to help you inspect the display.