Find out whether the mouse is actually broken before you reinstall drivers: check that every button and the scroll wheel register, catch a worn switch that double-clicks on its own, time your clicks per second, and get an estimate of the polling rate. Useful after a drink spill, when a game registers phantom clicks, or before buying a used gaming mouse.
Everything runs in your browser and no clicks or movement are sent anywhere. Checking the rest of your setup? The keyboard test finds dead keys and measures rollover, the gamepad tester checks controller buttons and stick drift, the touchscreen test paints out dead zones, and the screen test hunts for stuck pixels.
Not sure whether it's the switch or a setting? Read why mice start double-clicking by themselves for how switch chatter works, the Windows and macOS settings that cause look-alike problems, and what a browser can and can't tell you about polling rate.
Frequently asked questions
How can I tell a double-clicking mouse (switch chatter) from a software setting?
Open the Double-click tab and click the target slowly, once per second. A healthy mouse logs one press per click with intervals of hundreds of milliseconds. A worn micro-switch bounces and registers a second press a few milliseconds after the first — the tool flags any interval under the threshold (default 50 ms) in red. Humans cannot click that fast, so those flags point at the hardware. If single clicks never get flagged but files still open on one click, the culprit is a setting such as single-click-to-open in your file manager or an OS double-click speed set unusually long.
What is mouse polling rate, and why is the browser estimate approximate?
Polling rate is how many times per second the mouse reports its position to the computer — 125 Hz (every 8 ms) on basic mice, 1000 Hz on most gaming mice, and 2000–8000 Hz on recent high-end models. The tool measures the typical gap between pointer events while you move. Browsers normally merge those events to the display refresh rate, so it uses pointerrawupdate or getCoalescedEvents where available to reach the raw reports. Even then, a busy tab, battery saving, or Firefox and Safari rounding timestamps to 1 ms can lower the reading. Treat it as an estimate and trust your mouse software for the exact figure.
What is a good clicks-per-second (CPS) score?
Regular clicking lands most people between 5 and 8 clicks per second over a 5 or 10 second run. Scores of 8 to 10 CPS are fast; above 10 usually means a technique such as jitter clicking (tensing the forearm) or butterfly clicking (alternating two fingers on one button), and some games treat sustained double-digit CPS as suspicious. The tiers shown are rough labels, not a benchmark. The best one-second burst is reported separately because most people start fast and slow down — the burst shows your peak while the average shows what you can sustain.
Why does right-clicking open a menu elsewhere on the page but not inside the test?
The browser context menu is the normal default action of a right-click. The test areas cancel that default — along with middle-click autoscroll and wheel scrolling — only while your pointer is inside them, so each button can be counted without the menu getting in the way. Everywhere else on the page your mouse behaves as usual. Back and forward thumb buttons are also suppressed where the browser allows it, though some operating systems act on them before the page sees the event, in which case they may still navigate.
Is any of my mouse activity recorded or sent anywhere?
No. Button presses, scroll events, click timings, and pointer movement are processed entirely inside your browser tab to update the counters on screen. Nothing is stored between visits and nothing is transmitted to a server. The only tool-specific event the site records is an anonymous “click-speed run finished” with no timing data attached. Closing or refreshing the page clears every reading.