Mouse Test
Press each button and roll the wheel. For the left, right, middle and side buttons you see how many presses registered and any click that came in twice from a single press (a double-click fault, or chatter).
Press the mouse buttons one at a time and roll the wheel inside this area
Suspected double clicks
Recording starts as soon as you press a button inside the area. Press one button at a time, as you normally would.
No suspected double clicks so far. Some faults only show up now and then, so press each button many times.
Some clicks look like a single press that came in twice. Go through 'Mouse double clicking: what to check, in order' below.
Touch and pen input do not test mouse buttons. Please use a mouse.
| Button | Presses | Suspected | Shortest gap (ms) |
|---|---|---|---|
| Left | 0 | 0 | - |
| Right | 0 | 0 | - |
| Middle | 0 | 0 | - |
| Back | 0 | 0 | - |
| Forward | 0 | 0 | - |
- Wheel up
- 0
- Wheel down
- 0
Rule: a press that comes within 25 ms after the same button was released counts as a suspected double click. 'Shortest gap' is the shortest time from a release to the next press.
Inside this area the back and forward buttons do not change the page, and the right-click menu and middle-click autoscroll stay off.
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How to test your mouse
- Press each button several timesInside the box, click each button several times as you normally would. Some double-click faults only appear now and then.
- Roll the wheel one wayRoll the wheel slowly in one direction only. If you only scroll down but the "Wheel up" count also rises, the wheel may be skipping backwards.
- If something is flagged, checkIf the "Suspected" column shows a number, go through the checks below.
Mouse double clicking: what to check, in order
- Windows click settingCheck File Explorer Options (General tab) isn't set to open items with a single click. With that setting one click opens files, which looks like a double-click fault.
- Other programs and portsSee if it happens in other programs too, and plug straight into the PC without a hub or extension. If only one program does it, check that program's or the mouse software's button settings.
- Another PCOpen this page on another PC and test again. If suspected double clicks show up there too, the problem is in the mouse.
- Manufacturer supportA switch that sends several signals per press is a hardware fault. Software can hide the symptom, but the switch stays faulty, so use the maker's warranty service if you can.
Cursor going farther than your hand? Check acceleration
Windows 'Enhance pointer precision' (mouse acceleration) may be the cause. Lutimize (our app) turns it off, and you can undo it anytime. Faults like double clicking can't be fixed by an app.
How it works and its limits
It counts the button and wheel signals the browser receives in the box. A press within 25 ms of releasing the same button is a suspected double click; it reads browser signals, not the mouse itself, so it has these limits.
- If the mouse software assigns another function (a key, a macro and so on) to a button, that button reaches the browser as a different signal and may not show up here.
- Very fast deliberate clicking can be counted as a suspected double click even when nothing is wrong. Press normally, one at a time, while testing.
- A fault that only happens now and then may not show up in a few presses.
- Your presses are counted only inside this browser. Nothing is sent to our server or added to the address.
Common questions
My mouse clicks twice when I press once. Why?
The switch sends press, release, press very quickly for one press, so the PC sees two clicks; this hardware symptom is called chatter. Check whether this page flags it, then follow the steps above.
Can software fix a mouse that double clicks?
If the switch sends several signals per press, software can't change the switch. Anti-chatter programs only hide it by ignoring a very quick second click, so use the maker's warranty service if you can.
Can I check the side (thumb) buttons for double clicks?
Yes. The back and forward buttons are counted per button with the same rule as the left and right buttons, and they do not change the page inside the box.
Can I check whether my scroll wheel skips backwards?
Yes. Roll the wheel slowly in one direction only and see whether the count for the other direction rises. If it keeps rising, the wheel may be at fault.
Pressing the wheel switches the page into a scrolling mode
That is the browser's autoscroll feature. It is turned off inside the test area, so press the wheel there.
The back and forward buttons do not register
The mouse may not have side buttons, or the mouse software may have given those buttons another function. Set them back to the default (back and forward) in the software and try again.
Does it work on a phone or tablet?
Touch and pen input are not mouse button tests, so they are not counted. Test on a PC with the mouse connected.
Are my results saved?
No. Everything is counted only inside this browser and nothing is added to the address. Reloading the page or pressing 'Start over' clears it.
Last reviewed 2026-11-08