Test Your Screen for
Display Issues in Seconds
Detect dead pixels, backlight bleed, color accuracy issues, and more with our free, professional-grade testing suite. No downloads required.
Stuck Pixel Fixer
Rapidly cycle colors to unstick stubborn pixels. Our free pixel repair tool helps users avoid costly screen replacements.
All Screen Types
Compatible with LCD, LED, OLED, and AMOLED displays. (Most effective on LCD/LED screens)
Browser-Based
No downloads or installations required
Fast Results
Most repairs complete in 5-10 minutes
Screen Testing & Repair Tools
Diagnose display issues with our testing suite, then repair stuck pixels with our free repair tool.
Testing Tools
Repair Tools
Stuck Pixels vs Dead Pixels
Not sure what you're dealing with? Here's how to tell the difference and what you can do about it.
Stuck Pixels
A stuck pixel displays a constant color (usually red, green, or blue) because one or more sub-pixels are stuck "on."
- Shows as a colored dot on screen
- Often fixable with rapid color cycling
- 60-80% success rate with our tool
Dead Pixels
A dead pixel appears as a black dot because the pixel is completely non-functional and receives no power.
- Appears as a black dot on all colors
- Hardware failure, not fixable via software
- Test first to confirm the issue
Professional tools, zero cost
Everything you need to diagnose and repair your screen—completely free to use.
Start testing in seconds, completely free
No signup walls, no credit cards, no catches. Run unlimited tests on any device, whenever you need them.
Professional results without professional tools
Thorough testing using just your browser. Comprehensive color patterns help you spot issues that matter.
Fix problems before paying for replacements
60-80% success rate repairing stuck pixels. Try our free fixer before spending money on warranty claims.
How it works
Get accurate results in three simple steps—no downloads, no account required.
Choose Your Test or Repair
Select from our display tests or stuck pixel repair tool
Run Full-Screen Analysis
Follow on-screen prompts - tests take 30-120 seconds, repairs 5-10 minutes
Get Instant Results
View test results or attempt pixel repairs with our free tools
When should you test your screen?
Regular testing can save you money and catch issues before they become bigger problems.
Before Warranty Expires
Document screen issues while you can still get a free replacement or repair.
Buying Used Devices
Test secondhand phones, laptops, or monitors before you commit to the purchase.
Noticed a Spot?
Identify whether it's a stuck pixel (fixable) or dead pixel (hardware issue).
New Device Check
Verify your brand new screen is defect-free right out of the box.
Ready to fix your screen?
Start with a free test to identify the issue, then repair stuck pixels with our free fixer tool.
Frequently asked questions
Everything you need to know about testing and repairing your screen.
Still have questions?
Contact our support team