Output
Steady colors, steps or fine-line patterns
UserBenchmark / All Tools / Monitor Test
Display
Monitor Test
Cycle through color, uniformity, grayscale and alignment patterns.
Free to useNo downloadNo sign-up
Monitor Test · At a glance
Quick answer: Cycle through color, uniformity, grayscale and alignment patterns. Different patterns answer different questions: a solid color helps spot pixel defects, while a grayscale shows tonal separation.
Monitor Test
The test loads when you open it. Device access is requested only after you choose to start.
Detailed guide
How to use this tool
- Start with solid colors, then inspect gray uniformity, black and white steps, and geometry.
- Note each observation separately.
Input
Manual visual inspection
Browser requirement
Native resolution; fullscreen support
Processing
Runs on your device; no tool-result upload
How it works and what the result means
These are visual inspection patterns. The page cannot read individual panel pixels, measure nits or contrast ratio, diagnose a panel automatically, or repair dead pixels.
Reading the result
Different patterns answer different questions: a solid color helps spot pixel defects, while a grayscale shows tonal separation.
Worked example and assumptions
A sequence of colors, steps and geometry patterns
Start with solid colors for pixel defects, gray for uniformity, then grayscale and alignment patterns. Record observed defects separately from software timing measurements.
Start with solid colors for pixel defects, gray for uniformity, then grayscale and alignment patterns. Record observed defects separately from software timing measurements.
What to check next
Keep the same picture mode and lighting throughout the sequence. Clean the panel before documenting a suspect point.
Use native screen resolution and 100% browser zoom for fine patterns. Disable adaptive brightness for comparisons. PWM inspection needs an external camera; banding can also be a camera artifact.
Frequently asked questions
Is one pattern enough for a complete monitor check?
No. Pixel behavior, uniformity, clipping and motion are separate properties. Use the related specialist tests for a closer inspection.
How do I start the Monitor Test?
Choose a pattern and open fullscreen. Inspect the entire panel, then click to cycle patterns. Press Escape to leave fullscreen.
Does this tool require a download or an account?
No. Open the interactive tool above in a modern browser. The instructions and explanations are available even with JavaScript disabled; running a test needs JavaScript.
Why can two attempts give different results?
Power settings, background tasks, browser scheduling, operating-system input processing and device settings affect measurements. Compare repeated attempts with identical settings rather than the single highest score.