Tool StudioTest your mouse or trackpad — buttons, scroll, drag
Click and hold each button, and scroll inside this box — works the same for a mouse or a trackpad's tap-to-click and two-finger scroll.
Click every button
Click and hold Left, Middle, Right, Back, and Forward inside the test box.
Scroll to test the wheel
Scroll inside the same box to check x/y scroll values update live.
Switch to Cursor Tracking
Move your mouse or trackpad across the box and check for skipping or jitter.
Switch to Select & Drag
Click, hold, and drag to check the button stays held and tracks smoothly.
Click every button — including side/thumb buttons most testers miss — scroll, and check your cursor tracking and drag-select, all in one place. Works the same whether you're testing a mouse or a trackpad's tap-to-click and two-finger scroll.
This also catches something most mouse testers don't: a worn switch firing two clicks from one press. If that happens while you're clicking around, you'll see a warning — that's a hardware defect, not something you did. Double-click twice on purpose with the Left button and you'll also see the gap between your clicks and whether it's fast enough to register as a real double-click.
Switch tabs for cursor tracking (checking for skipping or jitter) and a drag test (does the button stay held and the cursor track smoothly through a click-and-drag, like selecting icons or highlighting text).
Looking for full click-speed (CPS) testing instead? That's its own dedicated tool, Click Speed Test — this page focuses on whether your hardware itself works correctly.
Everything runs entirely in your browser — nothing is uploaded, no account needed.
Click and hold each button in the test box, scroll to check the wheel, then switch tabs for cursor tracking and a click-and-drag test.
Yes — free, no sign-up, and it works with any mouse or trackpad, not just specific brands like Logitech or Razer. It reads standard browser input events, the same ones every mouse produces regardless of manufacturer.
Yes — a trackpad's tap-to-click and two-finger scroll fire the same browser events a mouse click and scroll wheel do, so the button test, scroll test, cursor tracking, and drag test all work the same way. Browsers can't reliably tell a trackpad apart from a mouse, and most multi-finger gestures (three/four-finger swipes) aren't exposed to web pages at all — Safari is a partial exception, with its own non-standard pinch-gesture events — so full gesture testing isn't something this tool covers.
They're in the same test box as the main three — labeled Back and Forward. If your mouse has them but they don't light up here, they may need vendor software installed before the OS recognizes them as mouse buttons at all.
That's how browsers number mouse buttons internally: 0=Left, 1=Middle, 2=Right, 3=Back, 4=Forward. This tool shows you the live number next to whichever button you last pressed, which is exactly what a web page sees.
Two systems are both common, and they only partly agree. Browsers (and this tool) number by a fixed internal list: 0=Left, 1=Middle, 2=Right, 3=Back, 4=Forward. Mouse driver software and many games instead number in click order: 1=Left, 2=Right, 3=Middle, 4=Back, 5=Forward. Both agree that Right is "button 2" — but they disagree on Middle and the side buttons, which is where most of the confusion comes from.
Shorthand for Mouse Button 1/2/3, used in game keybind menus — MB1 is left/primary click, MB2 is right/secondary click, and MB3 (or MMB) is the middle button. This matches the click-order numbering system, not the browser's internal one.
Typically Left, Right, Middle (wheel click), Back, Forward, plus one more — often a DPI-cycle button on gaming mice. Exact layouts vary by manufacturer.
Just a basic or standard mouse — one with only Left and Right, no middle-click wheel or side buttons. Increasingly rare now that even budget mice usually include a scroll wheel.
Click normally anywhere in this tool — if you ever see the warning banner about a click registering twice, that's this tool catching it live, in any tab. It flags any second press on the same button arriving faster than about 50 milliseconds after the first, well under what's humanly possible to do on purpose.
This tool can only detect it, not fix it — the cause is physical wear on the switch. Some manufacturers' software (like Logitech's or Razer's) offers a debounce/delay setting that can mask it temporarily; otherwise, replacing the switch or the mouse is usually the real fix.
Yes — double-click the Left zone in the button test above and you'll see the gap between your two clicks and a badge showing whether it's fast enough to register as a real double-click, using the same ~500ms rough threshold most operating systems default to.
Not sustained clicks-per-second testing — that's its own dedicated tool, Click Speed Test, since it's a much bigger feature (duration presets, live speed, its own countdown) built for a different, largely gaming audience. This tool focuses on buttons, scroll, tracking, drag, and single double-click speed checks.
Scroll inside the main test box — the x and y values update live and briefly highlight, so you can confirm both vertical and horizontal scroll (including a tilting wheel, if yours has one) register correctly.
No — browsers can't read a mouse's raw USB polling rate or true DPI at all; they only see the movement and click events the OS already translated. Any "polling rate test" done in a browser is really timing JavaScript events, which reads meaningfully lower than the real hardware rate. Cursor tracking is the closest honest alternative — it shows tracking smoothness, not a fabricated Hz or DPI number.
It draws a line following your cursor as you move it. A smooth, unbroken line means your mouse or trackpad is tracking cleanly; visible gaps or sudden jumps can point at a sensor or surface problem.
Click and hold, then drag across the box — a live selection rectangle follows your cursor, and the button should stay registered as held the whole time. If the drag stutters, jumps, or the button seems to release on its own mid-drag, that points at a tracking or switch problem specifically during sustained movement, which the basic button test (press-and-release only) and cursor tracking (movement without a held button) can each miss on their own.
Button and scroll testing need a real mouse or trackpad — a touchscreen tap doesn't distinguish left/right/middle the way a mouse does. The site itself works on mobile, but this specific tool is built for a device with an actual pointing device attached.
Most mouse switches are rated by their manufacturer for somewhere between 10 and 50 million clicks, though real-world lifespan varies a lot with click force and build quality. That's roughly why older mice start double-clicking on their own — the switch is wearing out, not you clicking wrong — so the chatter detector above is the practical way to check if yours has already reached that point, rather than trying to count total lifetime clicks.
The context menu is intentionally disabled inside the test boxes so it doesn't interrupt testing.
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