Dead Pixel Test

Dead pixels stay black, while stuck pixels stay lit, often red, green, or blue. Switching solid colors makes them easier to spot.

• Solid color set (white/black/RGB and more) • Fullscreen toggle + UI hide mode • Keyboard shortcuts for fast cycling • Shows HEX value for the current color

1) Enter fullscreen. 2) Cycle colors with ←/→. 3) Scan the screen slowly. 4) Hide UI for a clean view if needed.

• This tool renders flat colors using a CSS background • Results depend on panel type and viewing angle • Uniformity and backlight bleed are easier to see on black or gray in a dark room

• Check a new monitor or laptop screen right after purchase • Inspect for stuck pixels after transport or pressure • Verify uniformity and backlight bleed for content creation • Quick test before and after monitor settings changes

Q: What's the difference between dead and stuck pixels? A: Dead pixels are always black, while stuck pixels stay lit in one color. Q: Can this fix dead pixels? A: No. It only helps you detect them. Q: How should I check the screen? A: Use fullscreen, set brightness to a normal level, and scan slowly, especially edges and corners. Q: Is fullscreen safe for OLED? A: Yes for quick checks, but avoid leaving a single bright color on OLED for a long time. Q: Can stuck pixels recover? A: Sometimes. Rapid color cycling or gentle pressure may help, but permanent defects require panel replacement. Q: Why does it look different at an angle? A: LCD panels have viewing-angle characteristics, so check from your normal viewing position.