Mouse Double Click Test — Catch a Faulty Switch
Test every mouse button online: left, right, middle and side buttons light up on a mouse graphic, with press counters, a scroll check and a double-click detector.
Processed entirely in your browser — nothing you enter here is ever uploaded.
Result
About this tool
This page opens the mouse tester with the click interval log highlighted: single-click in the test area repeatedly and watch the milliseconds between consecutive clicks of the same button.
The diagnosis rule is simple and honest: a human double-click takes roughly 150–500 ms, and a clean single click produces no short interval at all. If entries under 80 ms appear while you were single-clicking, the switch contacts are bouncing — your mouse is double-clicking by itself, and the flagged entries are the proof.
Switch bounce gets worse with wear, so test the button you use most. If the left button shows flagged intervals and the right one never does, the hardware verdict is clear: the switch needs cleaning or replacement, and no driver setting will fix it.
Example. A left click increments the left-button counter, and a second click of the same button sooner than 80 ms is logged as suspected switch bounce.
Limit. Only left, middle, right, back, and forward buttons are tracked, and the event log keeps 20 lines.