Diagnostic Tools

Free browser-based tools to test your devices. No download needed.

Monitor

Dead Pixel Tester

Cycle through solid colors fullscreen to spot dead, stuck, or hot pixels on any display.

Monitor Refresh Rate Tester

See the actual FPS your display is rendering right now, live in your browser.

Screen Ghosting Tester

A fast-moving bar reveals ghosting and slow pixel response time on your monitor.

Monitor Viewing Angle Tester

Check how colors and contrast shift as you tilt your screen. 4 test patterns for IPS, VA, and TN panels.