How to Check for Dead Pixels Online (No Download)
Dead pixels are stuck or unlit dots on an LCD/OLED panel. You can spot them in a browser — no software install required. Quick online check Open a full-screen screen test in your browser. Cycle through solid
Dead pixels are stuck or unlit dots on an LCD/OLED panel. You can spot them in a browser — no software install required.
Quick online check
- Open a full-screen screen test in your browser.
- Cycle through solid colors (white, black, red, green, blue).
- Look carefully for dots that stay the wrong color or stay dark/bright on every screen.
- For a focused walkthrough, see the dead pixel guide.
Tips
- Dim the room lights and sit close to the display.
- Test at native resolution (not scaled).
- Note which color fails — that helps when talking to support or a retailer.
More free tools and guides: Screen Issues.
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