Monitor & Screen Tester Pro
Complete suite for testing dead pixels, ghosting, backlight bleed, screen uniformity, and sharpness.
💡 Tip: Press ESC or click anywhere on the screen during the test to exit fullscreen mode.
Free Online Monitor & Screen Diagnostic Suite
Test your PC monitor, laptop screen, TV, or mobile display instantly in full-screen mode. The OneGames Monitor & Screen Tester Pro offers comprehensive diagnostic tools to identify hardware defects, ghosting, motion blur, color banding, and backlight bleed without downloading software.
Comprehensive Display Test Modes
- Dead & Stuck Pixel Test: Cycles through solid primary and secondary colors (Red, Green, Blue, White, Black, Yellow, Cyan, Magenta) to locate dead sub-pixels.
- Motion Blur & Ghosting (UFO Speed Test): Animated high-speed moving bars evaluate response time (GtG) and panel pixel responsiveness.
- Backlight Bleed & OLED Test: Evaluates dark-room light leakage around IPS/VA panel borders or tests pure blacks on OLED displays.
- Color Gradient & Banding: Evaluates color bit-depth accuracy (8-bit vs 10-bit) to ensure smooth tonal transitions without banding.
- Contrast & Gamma Calibration: Displays a 16-step grayscale spectrum to verify proper contrast ratio configuration.
- Text Sharpness & ClearType: Tests font rendering sharpness and readability at various font sizes.
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