Test your hardware, right in the browser.
A small bench of tools for checking whether your mouse, keyboard, display, speakers, controller, or touchscreen are actually doing what they should. Nothing to download — everything runs locally on this page.
// Select a module
Double-Click Test
Catch mouse switch chatter and phantom keyboard repeats — logs the interval between every click and keypress.
Run testMouse & Scroll Test
Buttons, scroll wheel direction, cursor trail, and live movement speed / polling estimate.
Run testKeyboard & Rollover Test
Full-layout key tester — see which keys register, how many register at once (n-key rollover), and ghosting.
Run testDisplay & Dead Pixel Test
Full-screen solid colors and gradients to spot dead or stuck pixels, backlight bleed, and banding.
Run testRefresh Rate Test
TestUFO-style moving object plus a live Hz reading, measured straight from your browser's frame timing.
Run testAudio & Channel Test
Confirm left/right stereo channels are wired correctly and sweep tones across the frequency range.
Run testGamepad Test
Live view of every connected controller's buttons, triggers, and analog stick drift via the Gamepad API.
Run testTouchscreen Test
Multi-touch point tracker — checks simultaneous touch count, pressure, and tracking accuracy.
Run test