# Hardware & Peripheral Testing

> Verify your mouse, keyboard, gamepad, and monitor are performing as expected with free browser tools that test hardware locally without any drivers.

## Tools in this collection

- [Mouse Acceleration Detector](https://www.teafun.cyou/tools/mouseaccel/) — Find out if your OS mouse acceleration is active. Move slowly then quickly — we analyze your cursor's nonlinearity.
- [Mouse Sensitivity Converter](https://www.teafun.cyou/tools/sensitivity/) — Convert your mouse sensitivity across 50+ games instantly. Enter your DPI and sensitivity to see your cm/360° and equivalent settings in every game.
- [Gamepad Tester](https://www.teafun.cyou/tools/gamepad/) — Test your controller inputs, check for stick drift, and set custom deadzones. Runs entirely in your browser.
- [Keyboard Heatmap](https://www.teafun.cyou/tools/keyboard-heatmap/) — Track your most-used keys in real time, build a heatmap from actual typing, and export the result as a PNG.
- [Monitor Refresh Rate](https://www.teafun.cyou/tools/monitor/) — Detect your monitor's refresh rate in your browser.

## FAQ

### Do I need to install drivers or software?

No. All tools run directly in your browser using standard web APIs. No downloads, extensions, or admin rights are required.

### Can these tools replace manufacturer software?

For quick diagnostics and verification they work well. For advanced configuration like custom DPI curves or RGB lighting you still need the manufacturer app.