Test display contrast, sharpness, and edge clarity
This tool uses black and white contrast patterns to help you test your display's contrast, sharpness, and response time. A high-quality display should show crisp edges on these patterns.
Select a test pattern
Click the 'Enter Fullscreen Test' button
Observe if the black-white boundaries are sharp and clear
Switch between different patterns for comprehensive testing
Observe if black-white boundaries are sharp and clear. Blurry edges may indicate insufficient display resolution or improper scaling settings.
Black should be deep enough and white should be bright enough. Low contrast results in flat, lifeless images.
When quickly switching patterns, you should not see obvious trailing. Ghosting indicates slow display response time.
Quick browser-based visual diagnostics
Simple controls for repeatable screen checks
Helpful for troubleshooting monitors and displays
No installation required before testing
Use Contrast Test to test display contrast, sharpness, and edge clarity.
Use it when you want a fast visual check before calibration, troubleshooting, or buying a new display.
Open the test in a stable viewing environment and compare multiple patterns or levels for more reliable results.