Test any device in your browser — free, instant, private.

Free, instant and private hardware checks — keyboard, mouse, controller, mic, webcam, screen and more. Nothing leaves your device.

No uploads
No installs
No sign-up
Works on mobile

Input

Keyboard Tester Test every key, rollover and chatter Gamepad Tester Buttons, sticks, triggers and vibration Controller Drift Test Detect stick drift in 10 seconds Mouse Tester Buttons, scroll, double-click bug Polling Rate Test Measure your mouse Hz live Click Test CPS test with shareable ranks Spacebar Counter How fast can you tap Space? Keyboard Latency Test Key response consistency check

Audio

Mic Test Waveform, levels and playback Headphone Test L/R channels, sweep and bass

Video

Webcam Test Preview, resolution and FPS check

Display

Dead Pixel Test Fullscreen color sweep for bad pixels Monitor Test Banding, gamma, sharpness patterns Refresh Rate Test Detect your real display Hz Touch Screen Test Find dead zones, count touch points

Frequently asked questions

› Are these tests really free?

Yes — every tool on PeriphCheck is free, with no sign-up, no download and no usage limits.

› Is my data private?

Completely. All tests run 100% in your browser using native web APIs. Audio, video and keystrokes are processed locally and never uploaded — there is no server to send them to.

› Do the tools work on mobile?

Yes. Touch, mic, webcam and screen tests are fully mobile-ready. Keyboard and gamepad tests need a physical device connected, so they are best on desktop.

› Which browsers are supported?

Any modern browser — Chrome, Edge, Firefox and Safari. A few niche APIs (like controller vibration) vary by browser, and each tool explains its limitations inline.