Keyboard Tester
Press any key to check it works
Last key
Waiting…
Code
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Keys tested
0
Pressed keys light up below and stay marked once tested.
Is every key on your keyboard alive
Every key you press lights up on the on-screen keyboard in real time, and tested keys stay green so you can see coverage at a glance. Great for checking a used keyboard before buying, after a spill, or verifying gaming keys. It also shows the key name and event code (e.code), which developers will appreciate. Everything runs in your browser.
Keys light up on screen the instant you press them.
Tested keys stay green so you can spot the ones you missed.
Shows both e.key and e.code — handy for developers too.
Frequently asked questions
Press every key in order. Any key that never turns green on screen is not registering physically.
Keys like power, volume and Fn may be intercepted by the OS or browser and never reach the page — that is not a hardware fault.
Yes — hold several keys at once and all registered keys stay highlighted, useful for checking N-key rollover on gaming keyboards.