Dead Pixel Check & Check Bad Pixels on Your Screen

I’ve seen screens with tiny dead spots that are hard to spot. Dead pixels are small dots that don’t show colors right. They can be black, white, or stuck on one color. Using a Dead Pixel Check helps you find these spots fast. The test changes the screen color so you can see dead or stuck pixels clearly. It’s a simple way to check if your screen has any bad pixels before you decide to fix or replace it.

How to Use the Dead Pixel Check Tool

Here’s what you do with Dead Pixel Check:

1. Click the colored box on the screen. This will make the test go full screen.
2. Press the spacebar to switch the screen color.
3. The screen will change between red, green, blue, black, and white.
4. Watch for tiny dots that don’t change color or look different.
5. Those are dead or stuck pixels on your screen.
6. Take your time and check each color carefully.

Comparison of Display Testing Tools

Feature	Dead Pixel Test	OLED Burn Test	Stuck Pixel Fixer	Backlight Bleed Test
Main Purpose	Identify dead (non-functional) pixels	Check for permanent screen burn-in	Try to revive stuck (frozen) pixels	Reveal light bleeding around screen edges
Best Used On	All display types (LCD, OLED, LED)	OLED displays	LCD and LED screens	IPS and LED panels in dark rooms
How It Works	Displays solid screens to reveal black/white spots	Shows solid colors to expose ghosting	Flashes rapid colors to unstick pixels	Dark screen with light border to reveal bleed
Can It Fix Issues?	No – detection only	No – detects only	Yes – sometimes unsticks pixels	No – only highlights the bleed
Test Duration	30 seconds to 1 minute	1–2 minutes	2–10 minutes depending on severity	30 seconds
User Recommendation	Check screens when buying or troubleshooting	Run monthly for OLED users	Try before replacing stuck screens	Use in dark environment for accuracy

What Dead Pixels Look Like on Different Colors

I’ve noticed dead pixels show up better on some colors than others. Usually, they stand out more when the screen is red, green, or blue. That’s because dead pixels don’t light up right, so they look like little black or bright spots on these colors. On white or black screens, they can be harder to spot. That’s why the test changes colors—it helps you catch dead pixels no matter where they hide

What Exactly Is a Pixel?

A pixel is a tiny dot on your screen. When all these dots light up, they make pictures and colors you see. Think of pixels like tiny building blocks for your display.

What Is a Dead Pixel?

A dead pixel is a small dot that stays black or doesn’t light up at all. It looks like a tiny dark spot that never changes, no matter what’s on the screen. My tool Dead Pixel Checker will help you to detect these pixels.

Comparison of Blue, Green, Black, Red & White Screens

Feature	Black Screen	Blue Screen	Green Screen	Red Screen	White Screen
Common Uses	Contrast checks, eye comfort, dark mode preference	Dead pixel detection, screen cleaning, gaming	Video compositing (chroma key), display calibration	Night light, eye strain reduction, screen testing	Pixel testing, lighting, photography, cleaning
Eye Comfort	Soothes eyes in low light, less strain	Medium brightness, can be calming	Often used in chroma key setups, moderate strain	Gentler on eyes, good for night use	Bright but can cause strain if too intense
Battery Consumption	Low on OLED, moderate on LCD	Moderate	Moderate	Moderate to low	High on OLED & LCD due to brightness
Use in Photography & Video	Used for contrast and silhouette effects	Good for color calibration and tests	Standard chroma key green screen	Used for creative lighting and effects	Excellent for even lighting and background
Typical Screen Color Value	#000000	#0000FF	#00FF00	#FF0000	#FFFFFF

How Are Dead Pixels Different from Stuck Pixels?

Dead pixels stay completely off — black all the time. Stuck pixels get stuck on one color like red, green, or blue and don’t change with the rest of the screen. Both are annoying, but stuck pixels still glow, while dead pixels don’t.

Can You Really Fix a Dead Pixel? Myths and Facts

I’ve seen lots of wild claims about fixing dead pixels. Some say just tapping or rubbing your screen will fix it. Others push special apps that flash colors fast. Honestly, these tricks might help stuck pixels sometimes, but dead pixels? Not so much.

You could try apps that cycle colors quickly to wake stuck pixels, but don’t expect miracles. Pressing the screen gently with a soft cloth might help, but be careful — too much force can damage your screen.

So yeah, maybe some dead pixels can be fixed, but often they’re just stuck that way. If the pixel really bugs you, replacing the screen might be the only real fix.

FAQs Dead Pixel Check