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.
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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
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.
Click the 'Start Gray Test' button to enter fullscreen mode. The test will display grayscale levels from black to white.
Watch carefully for any areas that appear discolored, show ghost images, or have uneven brightness on each gray level.
Pay special attention to mid-tone grays (40-60%) where burn-in damage is most visible. Look for faint outlines or shadows.
If you detect issues, note the affected gray levels and areas. Press ESC to exit and consider adjusting display settings.
Ghost images or discoloration visible on gray backgrounds. Most noticeable on mid-tone grays where pixel degradation becomes apparent.
Uneven brightness or color across the display. Visible as patches or bands on solid gray backgrounds.
Pixels that appear different from the surrounding gray level. Dead pixels stay black; stuck pixels show constant color.
Color shifts or tinting on gray levels. Gray should appear neutral without color casts.
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.
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.
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.
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.