SZ Display Tester - Free Online Monitor Test with 51+ Test Patterns

A comprehensive display and monitor testing tool with 51+ test patterns across 8 categories for evaluating display quality, calibrating settings, and diagnosing issues like dead pixels, backlight bleed, and color accuracy problems.

Features

• Dead pixel detection with solid red, green, blue, white, black, and cyan screens
• Color tests: RGB gradient, grayscale, color checker, gamma, color bleed, banding, and dithering detection
• Uniformity tests: white/gray uniformity, 5-point brightness, sweep, viewing angle, and burn-in check
• FPS and refresh rate tests: frame counter, UFO motion test, and VSync tear detection
• Motion and response tests: moving crosshair, black-white flash, pursuit camera, input lag, gray-to-gray
• HDR tests: gradient, highlight clipping, contrast ratio, and shadow detail
• Geometry tests: pixel grid, checkerboard, circle/line, text sharpness, aspect ratio, subpixel layout, moire pattern
• Calibration tools: gamma, RGB balance, sharpness pattern, contrast, brightness, keystone grid, overscan, color temperature, convergence, backlight bleed, screen ruler, pixel clock
• Fullscreen mode for accurate testing with interactive controls per test