Mouse Tester: Check Every Button, Click and Scroll Online

People usually open a mouse tester when something already feels wrong, like files that open with one click, side buttons that stop working in games, or scrolling that jumps backward. Clear readings show whether mouse hardware is failing or whether software settings in Windows, macOS or brand apps are causing trouble, which can save you from buying replacements too early.

How to Use the Mouse Tester

Testing takes five simple steps, and none of them leave our page or install anything on your computer.

1. Move your pointer into the test area so our tool can capture every click and scroll.
2. Click left, right and middle buttons one at a time, and watch each one turn green on the mouse picture.
3. Press both side buttons, usually labelled Back and Forward, which our page blocks from changing tabs during testing.
4. Scroll up and down slowly, then check that counters add one step for every notch you feel.
5. Swing your mouse quickly in steady circles to read its polling rate, then note the highest value shown.

Test Every Mouse Button

Each button press appears on screen instantly, so a button that stays grey while you click it points straight to a hardware or mapping problem.

Left, Right and Middle Clicks

Main buttons use small mechanical or optical switches under each shell, and worn switches often fail by missing clicks or sending extra ones. Middle clicks come from pressing down on the scroll wheel, and our page blocks autoscroll so that press registers cleanly instead of opening scroll arrows.

Side Buttons (Back and Forward)

Gaming mice and office mice like Logitech MX models carry two thumb buttons that browsers read as Back and Forward. If they never light up, open Logitech G HUB, Razer Synapse or SteelSeries GG and check whether those buttons were remapped to macros, DPI changes or other actions.

Double Click Test: Is Your Switch Failing?

Worn switches can chatter, which means one press sends two clicks because metal contacts bounce before settling. That fault explains why folders open when you only meant to select them, or why dragged items suddenly drop halfway across the screen.

Click each button slowly and steadily, and watch for fault warnings from our mouse tester. Our tool flags any second click that arrives only milliseconds after release, faster than human fingers can move, and you can change its threshold from 80 ms if you want stricter or looser checks. Healthy mice show zero faults even after dozens of clicks, so even one or two warnings deserve a closer look. For per-button pass or fail verdicts and hold-and-release bounce checks, run our dedicated double click test.

When faults appear, raise debounce time in your mouse software if it offers that setting, and check warranty coverage because switch wear counts as hardware failure on most brands. Skilled users can also replace worn Omron or Kailh switches with fresh ones, although opening your mouse may void its warranty.

Scroll Wheel Test

Scroll wheels report movement in small steps, and this mouse tester adds one count for every notch your wheel sends in each direction. Counters that jump backward, skip notches or keep moving after you stop usually point to dust inside wheel encoders. Short bursts of compressed air around that wheel often fix this, while mice with worn encoders need repairs or replacement.

Mouse Polling Rate Check

Polling rate measures how many times per second a mouse reports its position to the computer, and we show it in hertz (Hz). Office mice usually run at 125 Hz, gaming mice at 500 or 1000 Hz, and newer models from Razer, Logitech and Pulsar go up to 8000 Hz.

Fast, steady movement gives the best results, because readings drop toward zero whenever movement stops. Chrome and Edge give our tool raw pointer updates through pointerrawupdate events, so their maximum values come closest to real settings. Firefox and Safari may round results down, so trust readings from Chromium browsers when numbers look low.

If results sit far below what the box promises, check polling settings in your mouse software and plug wireless receivers straight into your computer instead of USB hubs. Polling rate and DPI are different settings, since DPI controls how far the cursor travels while polling rate controls how often its position updates.

Testing a Laptop Touchpad

Touchpads work with this mouse tester too, and taps, clicks and two-finger scrolling all register like normal mouse input. Polling readings were built for mice, so touchpads often show lower numbers that do not mean anything is broken. Windows precision touchpads and MacBook trackpads both pass our click and scroll checks without extra drivers.

Online Mouse Tester vs Brand Software

Brand apps like Logitech G HUB, Razer Synapse and SteelSeries GG change DPI, polling rate and button mapping, but they rarely show live click faults or raw scroll counts. Our mouse tester gives you those readings in any browser without accounts or downloads, which also makes it handy for checking used mice before you buy them. Our page reads clicks and movement through standard Pointer Events, the same browser feature that drawing apps and web games rely on. Gamers testing full setups can check their controllers with our gamepad tester right after this.

Frequently Asked Questions

Can this page measure my mouse DPI?

No, DPI depends on how far your mouse physically travels, which browsers cannot measure without a ruler and manual setup. Check DPI inside your brand software, then use our page to confirm buttons, scrolling and polling rate.

Why does my polling rate number jump around?

Readings change with movement speed, background apps and USB port load, so live numbers rise and fall during testing. Your highest steady value reflects your real setting far better than any single reading.

Is a higher polling rate always better?

Higher rates make cursor movement smoother and cut input delay slightly, which helps in fast shooters such as Valorant or Counter-Strike 2. Rates of 4000 Hz and above also use more CPU power, so older computers may stutter and run better at 1000 Hz.

Are polling rate and report rate the same thing?

Yes, both names describe how often your mouse sends position updates, and brands simply choose different labels. Razer and Logitech usually say polling rate, while some other brands call it report rate.

Can I test wireless and Bluetooth mice?

Yes, wireless mice with USB receivers and Bluetooth mice both work normally on our page. Bluetooth connections usually report at lower rates than dedicated 2.4 GHz receivers, so expect smaller polling numbers over Bluetooth.

Does this test work on Mac and Linux?

Yes, it works in Safari, Chrome and Firefox on macOS, plus Chrome and Firefox on Windows, Linux and ChromeOS. Chrome and Edge still give you the most precise polling readings on every system.

Start Testing Your Mouse

Small mouse faults cost clicks, shots and time, and a mouse tester shows exactly which button, switch or wheel needs attention before you spend money. Place your cursor inside our test area, click every button, scroll both ways and check your polling rate within one minute. If games still stutter while your mouse tests clean, run our GPU test, or visit our hardware tester to check other devices on your setup.