Your mouse. A clearer answer.

Mouse Test

Free · No install

A quick check for the mouse on your desk. Start with the buttons, then take a closer look.

A desktop tool

A mouse needs a computer.

Open this page on a computer and connect your mouse to test it. You can copy the link below.

A connected mouse on a touchscreen device can also work. Touch taps cannot test physical mouse buttons.

Ready when you areLIVE INPUT
Each region lights up for a received button press. Counts below provide the same information in text. LRMBT
Total presses0
Short repeats0
Last inputWaiting
Start the test, then use your mouse inside this area.

Click left, right and middle 5+ times each. Pause about ½ second between clicks. Side buttons are optional.

Your events stay in this browser. Keyboard controls do not count as mouse samples.

Left / primary0
Middle / wheel0
Right / secondary0
Back0
Forward0
Read the evidence

How to read your result

A normal mouse test shows a press followed by a release for each button you deliberately use. Start the test, keep the pointer inside the dark area and click left, right and middle at least five times each. Leave about half a second between clicks. Ten clean cycles per button provides the larger sample used for the Excellent label. The response score describes the events received in this visit; it cannot certify the hardware or predict remaining switch life. Short repeat intervals are only suspicious when you meant to make single clicks. No event from a button is missing evidence until you confirm you physically pressed it. If you changed button assignments, the logical primary and secondary labels can differ from the physical left and right sides. Save the result and repeat after changing one thing, such as the USB port.

Your next check

What to do if something looks wrong

  1. Reconnect the mouse or receiver directly to a different USB port. Bypass an unpowered hub.
  2. Check charge, batteries and visible cable damage. Replace a detachable cable with a compatible known-good cable.
  3. Disconnect the mouse before gently clearing loose dust around buttons and the wheel. Follow the maker’s cleaning instructions; do not pour liquid into it.
  4. Check button assignments and install updates from your operating system or mouse manufacturer. Avoid third-party driver download sites.
  5. Repeat on another computer. A symptom that follows the mouse makes a hardware problem more plausible, but browser results alone cannot identify a worn switch or encoder.
One signal at a time

Take a closer look

A few useful answers

Frequently asked questions

Can this mouse button tester tell me my mouse is broken?

It shows the press and release events your browser receives. A repeat signal is a reason to investigate, not proof of a broken mouse. A missing signal may come from the connection, button mapping, browser or hardware. Compare another USB port and computer.

Why are left and right buttons labelled primary and secondary?

The browser reports logical button assignments. If you swapped buttons in your system settings, the primary signal can come from the physical right button. Match the result to your configured layout.

Can I test mouse side buttons?

Yes. Back and Forward signals are shown when your browser delivers them. Some operating systems, browsers and remapping software reserve those buttons for navigation. Unavailable side-button events do not establish a fault.

Will using the keyboard count as a mouse click?

No. You can start, finish and share a test with the keyboard, but keyboard activation and touch taps do not become mouse samples. Use your physical mouse inside the test area.

Sources and test limits

Methods are browser observations, not hardware certification. See the scoring formulas and limitations.