Left, middle, and right buttons
Press the three standard buttons one at a time. Each detected press changes the status and increments a counter, which makes an intermittent click easier to spot.
BROWSER INPUT TESTER
Mouse Tester — Check Every Button, Scroll & Click
Use this free mouse tester online to check buttons, scrolling, movement, dragging, double-click behavior, and browser-estimated event frequency in seconds.
No download
No sign-up
Local browser test
LIVE MOUSE TESTER
Use this mouse tester in the browser
Move into the dark test area, then click, scroll, drag, and double-click. This mouse tester shows which events the browser receives, so you can check a mouse button, wheel, side key, or movement signal without installing software.
The tester keeps readings in this browser tab.
INTERACTIVE TEST AREA
Waiting for input
Move your mouse here, then test each button
Right-click is contained in this area
Position: —
Works best with a physical mouse on desktop
On a phone or tablet? Connect a physical mouse and use a desktop-style browser for the full test.
WHAT IT CHECKS
What this mouse tester checks
Use this free mouse tester online to read ordinary pointer events from the page. It helps you check common buttons and movement quickly, while separating a browser result from a hardware diagnosis.
Back and forward buttons
Try Back and Forward on a five-button mouse. Browsers, operating systems, and mouse software can intercept side keys, so a missing row is a visibility limit—not proof that the switch is broken.
Scroll direction and middle click
Scroll in both directions, then press the wheel. Separate up and down counts show whether the page receives the expected wheel events while the test area contains right-click behavior.
Double-click timing
Double-click inside the surface to see the browser event and observed interval. It can reveal unusual timing, but it cannot confirm switch bounce or physical wear.
Movement, dragging, and frequency
Move across the surface and drag with the left button held. Movement counts and a short event-frequency estimate help diagnose delivery, not certified sensor performance.
QUICK START
How to use this mouse tester online
This tester needs no account, download, or special driver for the basic check. Keep the pointer inside the marked surface so every action belongs to the same session.
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01
Enter the test area
Move into the dark panel. The coordinate readout and surface label confirm that the page is receiving movement events.
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02
Press every button
Click left, right, and middle, then try Back and Forward if your mouse has side keys. Each row should change from Not tested to Detected.
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03
Test the wheel
Scroll up and down several times and press the wheel once. Compare the two direction counts instead of relying only on page movement.
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04
Try motion and drag
Sweep across the surface, hold the left button, and drag. The movement count and Drag detected state show whether those events arrive.
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05
Reset and repeat
Use Reset test before checking another mouse or repeating an intermittent test. Clear log removes recent events without changing button counters.
READ THE SIGNAL
How to read this mouse tester's results
When you use a mouse tester online, the result panel separates an observed browser event from an assumption about the physical device. That distinction matters for gaming mice, office mice, replacement parts, and setups affected by remote desktop software.
Waiting
The input has not been tried in this session. This is a neutral starting state, not an error.
Detected
The browser received the expected event. The counter and recent-event list provide a second confirmation.
Not visible
The browser, operating system, extension, or button mapping may have handled the input before the page could observe it.
Browser estimate
The frequency card summarizes movement events delivered during a short sample. Treat it as a rough browser result.
Example
The starting card explains the output before you interact. It never pretends to be your live reading.
WHEN SOMETHING LOOKS WRONG
Why a mouse button may not register
This browser mouse tester is quick, but it can report only the events the browser is allowed to receive. Use these checks to separate a page limitation from a possible device problem.
One button remains Not tested
Try it in another browser, reconnect the mouse, and review operating-system settings. Side buttons are most likely to be intercepted or remapped.
Right-click opens a menu elsewhere
Keep the pointer inside the dark test surface. MouseTester contains the context menu only there; the rest of the page keeps normal browser behavior.
The wheel feels uneven
Scroll slowly in both directions and compare counts. Skips can come from the wheel encoder, a driver setting, an extension, or an input issue.
Double-click happens unexpectedly
Use the timing readout as a clue, then test single clicks in another app. A web result cannot prove switch bounce or physical wear.
You are testing on a phone
Touch input is not the same as a physical mouse. Connect a mouse and use a desktop-style browser for buttons, a wheel, and side keys.
HONEST LIMITS
What this mouse tester can and cannot tell you
This mouse tester is a fast first check for input delivery, not a replacement for a driver utility, an oscilloscope, or a hardware laboratory test.
- It reports browser mouse events, not switch condition, click lifespan, debounce quality, or internal electrical faults.
- A normal web page cannot read your exact physical DPI or CPI setting directly.
- The hertz value is a browser-delivery estimate, not a certified hardware polling-rate measurement.
- Back and Forward buttons may be handled by the browser, operating system, extension, or mouse software first.
- A clean result means the browser saw the action; another game or application may still behave differently.
NEXT ON THE BENCH
Focused mouse tools planned for later
The homepage handles the common check first. Later tools can give high-intent tasks a dedicated tester without changing this general mouse tester.
Planned
Double Click Test
A focused view for click intervals and browser-visible double-click behavior.
Planned
Polling Rate Test
A sampling view for browser-estimated movement frequency and its limits.
Planned
Scroll Wheel Tester
A compact check for direction, middle click, and skipped wheel input.
COMMON QUESTIONS
Mouse tester FAQ
When you use this free mouse tester online, this FAQ explains what a browser mouse test can verify, what it cannot access, and how to interpret a result that differs from your expectation.
How do I use this free mouse tester online?
Move into the test area, then click each button, scroll up and down, press the wheel, double-click, and drag. The live result card updates as the browser receives each event.
Can this mouse button tester find a faulty button?
This tester can show whether the browser receives a button event and how many times it arrives. If a button stays Not tested, try another browser or application before deciding that the hardware has failed.
Can this mouse tester check a double-click problem?
Yes, this tester can show a browser double-click and the observed interval when available. It cannot diagnose switch bounce, debounce settings, or physical wear by itself.
What is a mouse polling rate test?
A polling-rate test estimates how often movement events reach the browser. This page labels the value as a browser estimate because scheduling, throttling, drivers, and the test surface affect the sample.
Why does my mouse wheel or side button not register?
The operating system, browser, extension, or mouse software may intercept the input first. Test slowly in both directions, try another browser, and check the same control in another application.
Does MouseTester save my clicks?
Counters and the event log stay in the current browser tab for the session. Reset test or closing the page clears them; the readings are not sent to a MouseTester test endpoint.
Can I use this mouse tester on a phone or tablet?
Touch screens do not provide the same buttons or wheel events as a physical mouse. Connect a mouse and use a desktop-style browser for a full check.