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All Tools

All display tests, calculators, and device guides in one place.

Tools

All Tools

Screen TestFill your screen with solid colors and patterns to spot dead pixels, uneven areas, and color issues at a glance.Dead Pixel TestStep through fullscreen black, white, and RGB fields to find pixels that stay dark, bright, or one fixed color.Backlight Bleed TestInspect dark screens in a dim room for light leaking around edges and corners, and tell it apart from IPS glow.Screen Resolution TestSee the resolution, viewport, pixel ratio, and orientation your browser reports, with plain explanations.Refresh Rate TestMeasure the frame cadence your browser observes over five seconds and compare it with your display setting.Display Performance TestWatch observed FPS, frame time, and stability during a short browser animation test.Ghosting TestFollow moving patterns to spot trails, smearing, or inverse ghosting on your display.Screen Tearing TestRun a fullscreen motion sweep to check for visible breaks where frame parts fall out of alignment.Greyscale & Uniformity TestCheck gray shade separation across dark-to-bright ranges and test full-screen fields for uneven areas.Black Level TestInspect pure black depth, near-black steps, and shadow separation on dark patterns.Touch Screen TestCheck multi-touch tracking, drawing continuity, and dead zones using browser pointer events.Gamma TestCompare fine stripe fusion patterns against 1.8 to 2.4 references, plus shadow and highlight detail.Brightness TestObserve brightness behavior, dark and bright detail retention, and white consistency across settings.Aspect Ratio CalculatorReduce any width and height to the simplest ratio, solve missing dimensions, and compare common shapes.PPI & Screen Size CalculatorTurn diagonal size and resolution into PPI, physical dimensions, display area, and side-by-side comparisons.Color Banding TestJudge grayscale, RGB, shadow, and highlight gradients for visible steps or bands.Burn-In TestScan solid colors and gray fields for faint logos, bars, or outlines that stay visible.HDR TestCheck browser-reported HDR capability plus highlight, shadow, and gradient reference patterns.

Guides

Guides

Laptop Screen TestSeven ordered checks for laptop displays, from dead pixels to motion, with a progress checklist.Monitor Screen TestEight ordered checks for desktop monitors, including refresh rate and color banding.Mobile Screen TestSeven checks designed for phones, covering touch, burn-in, and both orientations.TV Screen TestEight checks for TV panels, with OLED, Mini LED, new-vs-used, and common display-issue guidance.OLED Screen TestEight checks for OLED burn-in, uniformity, and black levels across TVs, monitors, and phones.LCD Screen TestEight checks for LCD bleed, glow, uniformity, black levels, and motion across IPS, VA, and TN displays.