Plug · Press · Test
Test every device connected to your computer
From keyboards to steering wheels and from headphones to MIDI keyboards, all your input and output devices are listed live below. Click a card to start testing right away. No installation, no sign-up — everything runs in your browser.
Connected devices
The list updates automatically when you plug in a new device.
Device not showing up? For game controllers, press any button. For microphone, camera and headphone names, grant access with "Show device names". For MIDI and USB HID devices, use the scan buttons.
Test catalog
What can you test?
KeyKey brings together every hardware interface a browser can access. Below you’ll find what each test measures, which devices it works with and how to read the results.
Supported device types
Almost anything your computer recognizes and your browser can access:
Frequently asked questions