Keyboard Chatter Test: Check Repeated Key Events
Start and focus the test area. Press physical keys or hold combinations. Automatic key repeats are identified separately. Browser and operating-system shortcuts may not reach the page.
Results
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How to use this tool
Start and focus the test area. Press physical keys or hold combinations. Automatic key repeats are identified separately. Browser and operating-system shortcuts may not reach the page.
| Results | Method and units |
|---|---|
| Close pairs | keyup → keydown: Δt < threshold |
| Threshold | 50 ms |
| Events | repeat = false |
Example
Recent events: KeyA keyup: 1000 ms → keydown: 1020 ms · Threshold: 50 ms · Close pairs: 1
What this test can and cannot tell you
Results reflect events and signals available to your browser. Settings, permissions and device support can affect them; they do not certify that hardware is healthy or faulty.
Short click or key intervals are observations, not proof of a fault