🔍 Dead Pixel Test & Stuck Pixel Repair
If you’ve noticed a small, persistent dot on your screen—especially one that appears red, green, or blue against a dark background—you may be dealing with a stuck pixel. While true dead pixels (typically black and unresponsive) generally require hardware-level intervention, stuck pixels can sometimes be improved using software-based methods.
This free browser-based tool helps you identify and attempt to restore stuck pixels—directly in your browser, with no installation required.
Understanding Pixel Issues
- Stuck pixels remain lit in one color (e.g., red, green, blue, or combinations like yellow or magenta) because one or more sub-pixels are continuously receiving voltage.
- Dead pixels are usually black and occur when a pixel no longer receives power — these are not fixable through software.
- A simple dead pixel test (displaying solid-color screens) can help distinguish between the two.
⚠️ Not every colored dot is permanently stuck—temporary image retention can mimic the appearance. Likewise, not all black dots are dead; some may be stuck in the “off” state.
How the Tool Works
The repair process uses a well-documented technique: rapidly cycling a localized area through high-contrast colors (red, green, blue, yellow, magenta, cyan, white, and black). This may help recalibrate the transistor controlling the affected sub-pixel.
Key features:
- Targeted repair zone — drag the flashing square directly over the suspect pixel.
- Client-side execution — all processing happens in your browser; no data is transmitted.
- Fullscreen support — press Space to toggle controls.
- Cross-device compatible — works on phones, tablets, laptops, and smart TVs.
Important Notes
- ✅ Allow 5–10 minutes per attempt. Some users report improvement within this window — but results vary.
- ⚠️ No guarantee of repair: Success depends on hardware condition, age, and pixel type.
- 🔧 Check your device’s display and sleep settings to prevent screen from dimming or turning off.
- ⏳ Avoid sessions longer than 30 minutes to reduce screen stress (especially on OLED displays).
This tool is provided for informational and experimental purposes. Use at your own discretion.