How to use this test
- Reset the counters. Click the target once, then wait about a second before clicking again.
- Repeat 20 deliberate single clicks. Compare the number of physical presses with the recorded count.
- Inspect “Short intervals” and the minimum interval. The default 150 ms threshold is a viewing aid, not an industry fault limit.
- Repeat with another port or connection. Use a different mouse as a control and download the report if you need to compare sessions.
Read the observations
A short interval means that two left-button pointer-down events reached this page close together. Intentional rapid clicking also creates short intervals, so this is meaningful only when you are deliberately making separated single presses. Adjusting the threshold reclassifies the existing intervals without changing the observations. A missing first interval is normal: one click has no previous click to compare with. The JSON report includes the intervals in milliseconds.
What this test cannot tell you
There is no universal millisecond boundary that proves switch chatter in a browser. OS timing, accessibility settings, remapping software and device firmware can affect events. This tool records presses, not your intent or the switch voltage. Do not change mouse firmware debounce settings based solely on this number.
Need a closer comparison? Mouse double-clicking: build a controlled comparison.
Questions about the test
What threshold should I use?
Start with 150 ms and keep physical presses roughly one second apart. Treat the threshold as a filter, and compare the raw count with your deliberate presses.
Is a short interval always a fault?
No. It can be an intentional double-click. Only a controlled comparison can help distinguish unexpected extra events.
Technical references
Method version 2.0 · Page updated 2026-10-20