What is the difference between a dead pixel and a stuck pixel?

A dead pixel remains permanently black because its transistor is completely unpowered. A stuck pixel remains locked on a single color (red, green, or blue) because liquid crystal molecules failed to twist properly, which can often be revived with rapid color stimulation.

Can this tool fix a dead pixel?

Dead pixels (pure black transistors) are physical hardware defects that cannot be revived through software. However, stuck pixels (frozen RGB subpixels) can frequently be unstuck using the built-in 60Hz rapid color flasher.

How long should I run the stuck pixel flasher?

We recommend running the flasher box directly over the stuck subpixel for 15 to 30 minutes. If the subpixel does not respond, pause and try again in 1 hour.

What is Backlight Bleed on IPS monitors?

Backlight bleed occurs when light from the monitor's CCFL or LED edge backlights leaks around the borders of the panel. Use the pure black swatch in a darkened room to audit edge bleeding.

Does this tester work on phones and tablets?

Yes. The tester is 100% responsive and supports fullscreen touch controls on Android, iPadOS, iOS, and smart TV browsers.

PC Hardware & Gamers

Online Screen Dead Pixel, Stuck Subpixel & OLED Burn-In Tester

Name: Screen Dead Pixel & OLED Burn-In Tester
Author: AnshuTechy

Inspect desktop monitors, laptops, and mobile OLED displays for dead pixels, stuck RGB subpixels, backlight bleed, and ghosting with full-screen color test swatches and rapid-flash pixel revivers.Documentation & FAQs ↓

Screen Dead Pixel & OLED Burn-In Tester — Interactive Console

Runs locally in your browser • Instant output

Active Color:Pure White(Best for spotting dead black pixels)

Click canvas to cycle colors•1 / 10

Step-by-Step Instructions

4 Steps to Completion

1Phase 1

Click 'Launch Fullscreen Test' or select a solid color swatch from the palette.

2Phase 2

Press Arrow Keys or click to cycle through White, Black, Red, Green, and Blue test screens.

3Phase 3

Closely scan your display for dark specks (dead pixels) or bright discolored dots (stuck subpixels).

4Phase 4

If a stuck pixel is found, activate the 'Stuck Pixel Flasher' box and drag it directly over the spot.

Practical Use Cases & Real-World Scenarios

Testing Brand New Monitors

Inspect newly purchased gaming monitors or laptops during the store return window for defective pixels.

Reviving Stuck Subpixels

Run the rapid-cycle RGB flasher over stuck bright red or green pixels for 10–15 minutes.

OLED Second-Hand Inspection

Check used smartphones, Nintendo Switch OLED, or TVs for permanent HUD or status bar burn-in.

Online Screen Dead Pixel, Stuck Subpixel & OLED Burn-In Tester

Step-by-Step Instructions

Practical Use Cases & Real-World Scenarios

Fullscreen Color Swatches

60Hz Stuck Pixel Flasher

OLED Uniformity & Burn-In Check

Zero Download / Multi-Device

Frequently Asked Questions

10 Best Gaming Browsers To Use in 2026

Found this tool helpful? Share it with colleagues & friends: