Mouse Test
Check five mouse buttons, pointer movement, drag, wheel direction, double click and pointer type inside one private test area.
Open test →MSMouse Button Test
Focus on left, middle, right, back and forward button events with a clear per-button status.
Open test →MSDouble Click Test
Measure intervals between clicks and flag unusually short pairs that can resemble an unintended double click.
Open test →MSScroll Wheel Test
Check upward and downward wheel events, raw delta, direction changes and the middle button.
Open test →MSClick Speed Test
Measure clicks per second, click intervals and the fastest one-second segment in a distraction-free test pad.
Open test →MSReaction Time Test
Measure the delay between a random visual signal and your click or tap, entirely in the browser.
Open test →MSMouse Polling Rate Estimator
Estimate browser pointer-event frequency and timing stability without claiming to measure certified USB firmware polling rate.
Open test →What these browser tests can tell you
These tools show events, streams and capability values made available by your browser. They are useful for reproducing a problem and comparing behavior, but they do not certify a component or replace repair diagnostics.
Run a test more than once and, when practical, compare another current browser, port, cable or device. Each tool page gives a more specific interpretation and troubleshooting sequence.