Dead pixel vs stuck pixel
A dead pixel usually stays black because it no longer lights up. A stuck pixel may stay red, green, blue, or another color. Solid color screens make these problems easier to see.
Dead Pixel Test
Cycle through solid colors and inspect your screen for dead pixels, stuck pixels, tinting, dust marks, and panel uniformity issues. This display test works on desktop, laptop, tablet, and mobile screens.
Display color checker
Click to change color
For the best inspection, clean your screen, increase brightness, and use browser full-screen mode.
How to inspect your monitor
Clean the screen first so dust is not confused with pixel damage. View white, black, red, green, blue, and yellow screens. Look carefully near edges and corners where backlight bleeding and uniformity issues are easier to notice.
Quick comparison guide
| Result | What it usually means |
|---|---|
| Low or unstable numbers | Check power mode, browser settings, drivers, background apps, and device temperature. |
| Different result in another browser | Browser engines, extensions, and hardware acceleration settings can change test behavior. |
| Good result but bad gaming feel | Game settings, ping, input lag, in-game FPS, or frame pacing may be the real issue. |
Frequently Asked Questions
Can this tool fix dead pixels?
No. This tool helps you find pixel issues. Some stuck pixels may recover, but dead pixels usually need panel repair or replacement.
What color shows dead pixels best?
White and bright colors make black dead pixels easier to see. Black screens help reveal bright stuck pixels and backlight bleed.
Should I use full-screen mode?
Yes. Full-screen mode removes distractions and lets you inspect the whole panel.
What is screen bleeding?
Screen bleeding is uneven light leakage, usually near edges or corners, especially visible on dark screens.
Can I test a phone screen?
Yes. Open the page on your phone and tap the color area to cycle colors.
Why do I see marks that disappear after cleaning?
Those are usually dust, fingerprints, or smudges rather than pixel defects.
Is one dead pixel normal?
Some manufacturers have pixel policies that allow a small number of defects. Check your warranty or return policy.
Can pressure damage pixels?
Yes. Avoid pressing hard on the panel during inspection.