DeadPixelTest.net
Motion diagnostic tool

Screen Response Time Test

Observe motion blur, ghosting, overshoot and pixel-transition behavior at several controlled speeds.

Follow the moving shapes with your eyes
Pixel transitions

Color transition test

Stopped
Fine detail

Moving pattern test

Check whether the fine checker pattern remains recognizable while moving.

Direct answer

What does a screen response-time test show?

It helps you visually observe how a display handles moving objects and color transitions. Visible trails, smearing, inverse ghosting or lost detail may indicate slower pixel transitions or aggressive overdrive, but this browser test cannot calculate a certified millisecond value.

✓ Multiple speeds✓ Transition patterns✓ Full-screen mode

How to get useful results

  1. Use the display’s native resolution and normal refresh-rate setting.
  2. Disable unusual browser zoom and compare with your normal overdrive setting.
  3. Follow the shapes with your eyes instead of staring at one fixed point.
  4. Repeat at slow, medium and fast speeds on light and dark backgrounds.
  5. Compare settings, not marketing claims; browser tests are observational.

Frequently asked questions

Does this page measure response time in milliseconds?

No. A browser alone cannot provide a reliable panel response-time measurement. The tool helps you visually compare blur, trails, overshoot and transition behavior.

What should I look for during the motion test?

Watch for duplicate trails, smearing, colored edges, loss of detail and bright or dark halos around moving objects.

Why do results change between browsers or refresh rates?

Browser rendering, operating-system composition, display refresh rate, scaling, variable refresh rate and power settings can all affect visible motion.

Explore more diagnostics

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Move between screen, camera, audio and device checks without returning to the homepage.

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Dead Pixel TestInspect solid colors for dead, stuck, bright or dark pixels. Touch Screen TestCheck touch coverage, dragging continuity and dead zones. Keyboard TesterTest a full-size keyboard and confirm every key press. Mouse TesterTest buttons, wheel, movement, dragging and double-clicks. Audio TesterCheck speakers, stereo channels, tones and microphone input. Camera & WebcamTest built-in, USB, phone, tablet and compatible TV cameras. Microphone TesterView microphone levels, waveform, recording and playback. Pixel ExerciserExercise a suspected stuck-pixel area with changing colors. Gradient TestInspect gradients, tonal transitions and visible banding. Brightness & ContrastCheck black levels, white saturation and contrast separation. Screen Size TestView viewport, resolution, pixel ratio and display data. Text SharpnessInspect text rendering, browser scaling and clarity. Motion & GhostingObserve motion blur, ghosting and response behavior. Resolution & ScalingCheck screen resolution, CSS pixels and scaling. Device InformationReview screen, browser, hardware and platform information. Browser CapabilityCheck which browser APIs and hardware features are supported. Network TestCheck connection status, latency and estimated download speed. GPS & LocationTest browser geolocation, accuracy, altitude and speed. Sensor TesterTest orientation, motion, acceleration and rotation sensors. Multi-Touch TesterTrack multiple touch points, pinching and rotation gestures.Screen Color ToolsOpen exact full-screen color pages for pixel, uniformity and lighting checks.Response Time TestObserve ghosting, blur and pixel-transition behavior at several speeds.Stylus Drawing TestCheck pen, touch, pressure, tilt and drawing continuity in your browser.
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