OLED Gray Test - Free Burn-In Checker & OLED Uniformity Test
Professional online OLED gray test tool for detecting screen burn-in, checking display uniformity, and identifying pixel degradation. Test your OLED display with 21 grayscale levels from pure black to pure white. Works on smartphones, tablets, monitors, and TVs.
Mobile Friendly
Monitor Test
TV Compatible
Instant Results
21 Grayscale Test Levels
From pure black (0%) to pure white (100%) - click Start to begin testing
Click to enter fullscreen mode and begin testing your display with grayscale levels
What is OLED Gray Test and Why Use It?
An OLED gray test displays various shades of gray across your screen, which is the most effective way to detect screen burn-in and uniformity issues. Burn-in damage becomes most visible on mid-tone gray backgrounds, making grayscale testing essential for OLED display health assessment. Our free online gray test tool helps you identify early signs of pixel degradation before they become permanent.
Unlike solid color tests, the grayscale gradient test reveals subtle display issues that might otherwise go unnoticed. Each gray level tests different pixel intensities, allowing you to spot color shifts, brightness inconsistencies, and uneven wear patterns across your OLED panel. This comprehensive test is crucial for maintaining optimal display quality.
Why Use Our OLED Gray Test Tool?
- 100% free online tool - no downloads, registration, or installation required
- 21 grayscale levels from 0% (black) to 100% (white) for comprehensive testing
- Automatic cycling mode with adjustable timing for thorough burn-in detection
- Works on all devices - smartphones, tablets, laptops, monitors, and OLED TVs
How to Perform an OLED Gray Test
Start the Test
Click the 'Start Gray Test' button to enter fullscreen mode. The test will display grayscale levels from black to white.
Observe Each Level
Watch carefully for any areas that appear discolored, show ghost images, or have uneven brightness on each gray level.
Check for Burn-In
Pay special attention to mid-tone grays (40-60%) where burn-in damage is most visible. Look for faint outlines or shadows.
Document Findings
If you detect issues, note the affected gray levels and areas. Press ESC to exit and consider adjusting display settings.
What Can You Detect with OLED Gray Test?
Screen Burn-In
Ghost images or discoloration visible on gray backgrounds. Most noticeable on mid-tone grays where pixel degradation becomes apparent.
Screen Uniformity Issues
Uneven brightness or color across the display. Visible as patches or bands on solid gray backgrounds.
Dead or Stuck Pixels
Pixels that appear different from the surrounding gray level. Dead pixels stay black; stuck pixels show constant color.
Color Accuracy Problems
Color shifts or tinting on gray levels. Gray should appear neutral without color casts.
Tips for Accurate OLED Gray Testing
Testing Environment
- •Test in a dimly lit room to reduce reflections and improve visibility of subtle issues
- •Clean your screen before testing to avoid confusing dust with pixel defects
- •Let your display warm up for 15-30 minutes before testing for accurate results
Viewing Techniques
- •View the screen from different angles to catch all types of uniformity issues
- •Get close to the screen to spot individual pixel problems
- •Compare different gray levels side by side to identify inconsistencies
Frequently Asked Questions About OLED Gray Testing
Why is gray test best for detecting OLED burn-in?
Burn-in damage is most visible on mid-tone gray backgrounds because the affected pixels show different brightness or color than surrounding pixels. Pure black or white tests can miss burn-in that becomes obvious on gray levels. Our 21-level grayscale test provides comprehensive coverage for detecting all types of display degradation.
How many gray levels do I need to test?
We recommend testing all 21 gray levels for comprehensive coverage. However, if you're short on time, focus on the mid-tone grays (40-60%) where burn-in is most visible. The 50% gray level is particularly effective for revealing screen uniformity issues and pixel degradation.
What's the difference between gray test and solid color tests?
Solid color tests (red, green, blue, white, black) are best for detecting dead pixels and stuck pixels. Gray tests are specifically designed for detecting burn-in and uniformity issues. The grayscale gradient reveals subtle problems that solid colors might miss, making it an essential complement to other display tests.
Can gray test detect issues on LCD screens too?
Yes, the gray test works on all display types including LCD, LED, QLED, and OLED. While LCD screens don't experience traditional burn-in, they can develop image persistence and uniformity issues that are visible on gray backgrounds. The test is equally valuable for assessing any display technology.
Ready to check your OLED display for burn-in and uniformity issues? Start the comprehensive gray test now.