Response Time Test
Test your monitor response time visually. Check for ghosting, smearing, and overshoot caused by slow pixel transitions.
Watch the moving bar. If you see a trail or shadow behind it, your monitor has ghosting (slow response time).
How does this test work?
A response time test moves objects across your screen. Trails behind moving objects indicate slow response time. Inverse ghosting (bright halos) indicates overdrive is set too high.
How to use the Response Time Test
Open the Response Time Test on any device with a modern browser — desktop, laptop, tablet, or phone. No downloads, plugins, or signup required. The tool loads instantly and works in Chrome, Firefox, Safari, Edge, and other Chromium-based browsers.
Follow the on-screen instructions to run the test. Results are displayed immediately in your browser. You can repeat the test as many times as needed. For the most accurate results, close other tabs and applications to reduce interference.
Privacy: This test runs entirely in your browser using standard web APIs. No data is collected, uploaded, or stored on any server. Camera, microphone, keyboard, mouse, and controller inputs are processed locally and never leave your device. DeviceKit does not use analytics cookies or tracking scripts.
Browser note: Some hardware values are estimated because browsers limit direct access to device hardware for security and privacy reasons. Results may vary slightly between browsers and operating systems. For the most reliable measurements, use an up-to-date version of Chrome or Edge on a desktop computer.
Frequently Asked Questions
What is a good response time?+
For gaming, 1-5ms GtG (gray-to-gray) is ideal. For office use, anything under 8ms is fine. VA panels typically have 4-8ms, IPS 1-5ms, and TN 1-2ms.
What is overdrive?+
Overdrive speeds up pixel transitions by applying extra voltage. Too much overdrive causes inverse ghosting (bright halos around moving objects). Moderate overdrive settings are best.
Related Tests
Monitor Ghosting Test
Test your monitor for ghosting and slow response time. See if fast-moving objects leave visible trails.
Motion Blur Test
Test your display for motion blur with moving stripe patterns. Check if fast motion appears sharp or blurry.
Refresh Rate Test
Measure your display's refresh rate in Hz using your browser. Check if your monitor is running at 60Hz, 120Hz, 144Hz, 240Hz, or higher.