# MouseTester — Full Reference

> Free online mouse testing suite. Diagnose buttons, double-click chatter, click speed, polling rate, and DPI directly in the browser. Every measurement runs locally via the browser's Pointer Events, High-Resolution Time, and Pointer Lock APIs — nothing is uploaded.

Site: https://mousetester.xyz
Stack: Astro 5 + React 19, deployed on Cloudflare Pages
Browsers: Chrome, Firefox, Safari, Edge (desktop and mobile where pointer APIs apply)

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## /mouse-test — Mouse Button & Movement Test
URL: https://mousetester.xyz/mouse-test

Detects every mouse button (left, right, middle, side back / forward, and any extra buttons reported by the browser) plus scroll-wheel direction and step size. Live cursor coordinates and movement deltas are shown in real time.

How it works:
- Listens to `pointerdown` / `pointerup` / `wheel` / `pointermove` events
- Maps `event.button` (0=left, 1=middle, 2=right, 3=back, 4=forward) to on-screen indicators
- Uses `event.movementX/Y` for raw movement and `deltaY` sign for wheel direction

## /double-click-test — Double-Click Chatter Detection
URL: https://mousetester.xyz/double-click-test

Measures the interval between consecutive clicks on the same button. A "double-click" issued from a single physical press (chatter) is the classic symptom of a worn micro-switch.

## /cps-test — Clicks Per Second Test
URL: https://mousetester.xyz/cps-test

Measures how many clicks the user can produce in a fixed window (1s, 5s, 10s, 30s, 60s).

## /polling-rate-test — Polling Rate Test
URL: https://mousetester.xyz/polling-rate-test

Measures how often the mouse reports its position to the OS. Common values: 125 Hz, 500 Hz, 1000 Hz, 4000 Hz, 8000 Hz.

## /dpi-test — Real DPI Measurement
URL: https://mousetester.xyz/dpi-test

Measures the actual DPI the mouse reports, which can differ from the advertised value.

## /scroll-test — Scroll Wheel Test
URL: https://mousetester.xyz/scroll-test

Verifies scroll wheel direction, distance, and encoder health.

## /mouse-hold-drag-test — Hold & Drag (Switch Dropout) Test
URL: https://mousetester.xyz/mouse-hold-drag-test

Detects micro-switch dropouts that surface when the user is mid-press.

## /latency-test — Click Latency Test
URL: https://mousetester.xyz/latency-test

Measures end-to-end click latency from the OS/browser boundary to the JavaScript handler.

## /accuracy-test — Accuracy & Aim Test
URL: https://mousetester.xyz/accuracy-test

A 30-second aim trainer. Tracks hits, misses, accuracy %, and average reaction time per target.

## /mouse-trail-test — Mouse Trail (Drawing) Test
URL: https://mousetester.xyz/mouse-trail-test

Renders the cursor's path as a continuous canvas line for diagnosing micro-stutter, angle snapping, and drift.

## /reaction-time — Visual Reaction Time Test
URL: https://mousetester.xyz/reaction-time

Measures visual reaction time. Five trials make a session with an SSS–C rating.

## /tools — Tool Index
URL: https://mousetester.xyz/tools

Landing page linking to every test with one-line descriptions.

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## Internationalization
Default locale `en` is served at the root (e.g. `/mouse-test`). Other locales are served under a prefix (e.g. `/zh/mouse-test`).

## Privacy
- No analytics on test data. No mouse events leave the browser.
- See https://mousetester.xyz/privacy

## Contact
Website: https://mousetester.xyz
Contact form: https://mousetester.xyz/contact