🔍 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.
🔍 FAQ
How long should I run the animation?
Most cases show results within 5-10 minutes of continuous use. Repeat 1-2 times if needed, with breaks between sessions to avoid excessive screen stress.
Is it safe for OLED/AMOLED screens?
The tool uses rapid bright color changes on a small area, creating localized light stress. On OLED/AMOLED displays, limit total sessions to around 30 minutes per area to minimize unnecessary wear.
Does it work on dead pixels?
True dead pixels—completely black and unresponsive—cannot be revived through color cycling. The tool targets stuck pixels only and cannot fix underlying hardware failure.
Before and After Tips
Before starting, clean the screen gently with a proper microfiber cloth to rule out dust or smudges. Disable sleep timers and power-saving modes to prevent interruptions during the session.
After use, test the pixel across solid color backgrounds for several minutes to confirm improvement. Avoid repeated long sessions, especially on OLED screens, to prevent additional stress.
Screen Type Warnings
LCD/IPS screens generally tolerate color cycling well during short, spaced sessions. OLED/AMOLED displays handle high local brightness better but require shorter sessions and temperature monitoring.
Skip physical methods promoted on forums (hard pressing, twisting, extreme heat/cold)—they often cause worse damage. This tool sticks to safe, software-only color stimulation without mechanical screen contact.
Troubleshooting
If the dot shifts position or vanishes after cleaning, it's surface dust, not a pixel defect—skip the tool. A careful wipe usually resolves these false alarms.
Multiple pixels or entire lines failing suggest broader panel or electronics issues. Check warranty terms and contact the manufacturer for repair or replacement in these cases.