Test Your Display For Dead & Stuck Pixels
Find faulty pixels that can ruin your viewing experience. Fast, accurate and distraction-free.
Fullscreen Accuracy
Eliminates distractions for the most accurate test
Pixel Precision
Click to mark suspicious pixels with coordinates
Auto Color Cycle
Cycle through colors automatically
Keyboard Shortcuts
Full control with intuitive keyboard commands
Export Results
Save your pixel list as CSV or JSON
How it works
Enter fullscreen mode
Click the button above to start the test.
Check each color
Look for pixels that don't match the background.
Mark suspicious pixels
Click on any pixel that looks dead, stuck or hot.
Review & export
Save your results for reference or support.
The Ultimate Guide to the Dead Pixel Test
What is a Dead Pixel Test?
A dead pixel test is an essential diagnostic procedure used to check the health and integrity of your display. Whether you have a brand-new monitor or an older device, a screen dead pixel test helps identify manufacturing defects, screen degradation, or physical damage. Using our dead pixel test website, you can instantly run a dead pixel test online without downloading any software. Our tool is a comprehensive online dead pixel test tool designed to support all major screen technologies and operating systems, making it a reliable dead pixel test screen assessment utility.
How Does a Screen Dead Pixel Test Work?
Our dead pixel test tool operates by filling your display with solid primary colors (Red, Green, Blue) along with black, white, and other custom colors in a distraction-free, fullscreen environment. Under normal circumstances, each pixel on your screen—composed of three sub-pixels (red, green, and blue)—should change color in unison. If a pixel remains black when the screen is white, it is a dead pixel. If a sub-pixel is stuck on a specific color (often bright red, green, or blue), it is a stuck or hot pixel. By conducting an online dead pixel test website check, you can cycle through these solid colors to easily spot anomalies.
Perform a Monitor Dead Pixel Test on Any Display
Whether you are a creative professional, gamer, or office worker, display clarity is paramount. Running a dead pixel test monitor scan is the first thing you should do after purchasing a new monitor.
- LCD Dead Pixel Test: Older liquid crystal displays are prone to dead pixels due to transistor failures. A targeted lcd dead pixel test will help you determine if your monitor qualifies for a warranty replacement.
- OLED Dead Pixel Test: OLED panels feature self-lit pixels that can degrade over time or experience burn-in. Our oled dead pixel test ensures that your premium panel displays dark tones and vibrant colors flawlessly, with no dark spots or stuck sub-pixels.
Dead Pixel Test on Mobile: iPhone & Android
Dead pixels aren't limited to desktop monitors. Mobile screens are highly susceptible to damage from drops, pressure, or liquid exposure.
- Dead Pixel Test iPhone: If you recently bought a new or refurbished iPhone, running a dead pixel test iPhone is crucial. Simply open our website in Safari, hit start, and check the panel in fullscreen. A quick iphone dead pixel test can save you from keeping a defective unit.
- Dead Pixel Test Android: Our tool is mobile-responsive and works perfectly on mobile browsers. Perform a dead pixel test android on your Samsung, Google Pixel, or OnePlus phone to ensure the touchscreen panel is in pristine condition.
Why Choose Our Online Dead Pixel Test Tool?
This dead pixel test website is designed for developers, testers, and everyday users who value simplicity, speed, and privacy:
- No Installation Required: Runs entirely in your web browser with zero software downloads.
- Comprehensive Color Palettes: Cycle through Red, Green, Blue, Yellow, Cyan, Magenta, White, and Black to cover all sub-pixel channels.
- Interactive Coordinates Locator: Tap or click the screen to register coordinates and export reports as CSV or JSON.
- 100% Free and Private: No personal data or display images are collected.
How to Fix Stuck or Dead Pixels
If your screen dead pixel test reveals a faulty pixel, you can check:
- Stuck Pixels: Since stuck pixels are caused by a sub-pixel that is temporarily frozen, they can often be revived. You can try running a rapid color-flashing utility for 10-20 minutes, or gently apply pressure with a microfiber cloth.
- Dead Pixels: True dead pixels (transistor is completely off and dead) are usually permanent hardware defects and cannot be fixed by software. In this case, you should check your manufacturer's warranty policy regarding dead pixels.
Frequently Asked Questions
Find answers to common questions about dead, stuck, and hot pixels, screen testing, and device troubleshooting.
How do I tell if I have a dead pixel?
To tell if you have a dead pixel, run a fullscreen color test (like our online dead pixel tester). Cycle through solid colors such as black, white, red, green, and blue. A dead pixel will show up as a tiny, persistent black dot on a white or bright background because it does not receive power or light.
Can dead pixel be fixed?
True dead pixels (pixels that are completely black and receive no power) are hardware failures and generally cannot be fixed by software. However, "stuck" pixels (pixels frozen on a specific color) can sometimes be revived by using screen fixing software that flashes colors rapidly, or by gently massaging the pixel area with a soft microfiber cloth.
Is 1 dead pixel bad?
While one dead pixel won't harm the rest of your screen, it can be annoying, especially if it is in the center of your display. Most manufacturers do not consider a single dead pixel a significant defect and require a higher count (usually 3 to 5) before offering a replacement under warranty.
Are dead pixels permanent?
Yes, in the vast majority of cases, true dead pixels are permanent. They are caused by a physical defect or transistor failure in the display panel. If a pixel is stuck (colored) rather than dead (black), it may resolve itself over time or be fixed, but a black dead pixel is typically permanent hardware damage.
What is the difference between a dead pixel and a stuck pixel?
A dead pixel is completely shut off, appearing as a permanent black dot regardless of what is displayed on the screen. A stuck pixel is stuck on a single sub-pixel color (usually red, green, or blue) because the transistor controls are frozen. Stuck pixels can sometimes be fixed, while dead pixels cannot.
Do dead pixels spread?
No, dead pixels do not spread like a disease or a computer virus. A dead pixel is an isolated hardware failure of a single sub-pixel or transistor. However, if your display suffered physical damage, pressure, or is aging, more dead pixels may develop over time in nearby areas.
Is it worth repairing a few dead pixels?
It is rarely worth repairing a few dead pixels out of warranty, as fixing them usually requires replacing the entire display panel, which can cost almost as much as buying a new monitor or device. If your screen is still under warranty, check the manufacturer's dead pixel policy to see if you qualify for a free replacement.
Will dead pixels return?
True dead pixels are permanent and do not "go away" to return later. However, if you managed to fix a stuck pixel, there is a chance it could get stuck again if the screen is subjected to high heat, pressure, or if the underlying sub-pixel transistor remains weak.
How much does it cost to fix a dead pixel?
Since fixing a dead pixel requires replacing the entire screen panel, the cost can range from $100 to over $600 depending on the device (e.g., smartphone vs. high-end OLED monitor). If the device is under warranty, it is free; if not, it is often more cost-effective to buy a new display.
How to avoid getting dead pixels?
To avoid dead pixels, handle your screens with care: avoid applying direct pressure to the panel, keep the screen clean using a soft microfiber cloth (never press hard), prevent overheating, turn off the screen when not in use, and buy displays from reputable brands with robust quality control.
How to test for dead pixel?
To test for dead pixels, go to an online dead pixel test website, switch your browser to fullscreen mode to hide tabs and margins, and cycle through solid backgrounds of Red, Green, Blue, Black, and White. Inspect the screen closely for any dots that remain black or display a different color than the background.
How to test dead pixel on android?
To test for dead pixels on Android, open a mobile-friendly online dead pixel test in your browser (like Chrome or Firefox), enter fullscreen mode, and cycle through different colored screens. Look closely for any dark spots or stuck sub-pixels. Alternatively, you can use specialized diagnostic apps or dial code *#0*# on some Samsung devices to access the built-in screen test menu.