# MouseTester

> Free online mouse testing suite — check buttons, double-click issues, CPS, polling rate, and DPI directly in the browser. No download, no signup, all tests run locally.

## What this site does
Browser-based diagnostic tools for computer mice. Uses the Pointer Events, High-Resolution Time, and Pointer Lock APIs for accurate measurements — every test runs client-side, no data leaves the device.

## Pages
- Home: /
- Mouse Button & Movement Test: /mouse-test
- CPS (Clicks Per Second) Test: /cps-test
- Double-Click Test: /double-click-test
- Polling Rate Test: /polling-rate-test
- DPI Test: /dpi-test
- Scroll Wheel Test: /scroll-test
- Hold & Drag Test: /mouse-hold-drag-test
- Click Latency Test: /latency-test
- Accuracy & Aim Test: /accuracy-test
- Mouse Trail Test: /mouse-trail-test
- Reaction Time Test: /reaction-time
- All Tools: /tools
- About: /about
- Contact: /contact
- Privacy: /privacy
- Terms: /terms

## Key features
- Left, right, middle, and side button detection
- Double-click chatter / misfire detection
- Real-time CPS measurement with click history
- Polling rate measurement up to 8000 Hz
- DPI measurement via on-screen ruler calibration
- Scroll wheel direction and step-size test
- Multi-language UI (English, Chinese, and more)
- Light and dark mode

## Technical
- Pure browser-side: Pointer Events API + performance.now() + Pointer Lock API, no server processing
- Built with Astro 5 and React 19, deployed on Cloudflare Pages
- Works on Chrome, Firefox, Safari, Edge

## Companion
- MouseTester Chrome Extension — same tests packaged as a browser extension

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