⌨️ Keyboard Test
Press any key and it lights up on the on-screen keyboard, turning green once tested. Hold several keys at once to check key rollover and ghosting on gaming keyboards. See the exact key and its physical code, count how many keys you've verified, and find dead or stuck keys — all in your browser.
Press any key — it will light up below. Hold several at once to test rollover.
🔒 Runs 100% in your browser. Your data never leaves your device.
How to use
- Click anywhere on the page, then press keys.
- Each pressed key lights up blue and turns green once tested.
- Hold multiple keys to test rollover and ghosting.
- Any key that never lights up may be dead.
FAQ
What is key rollover (NKRO)?
Key rollover is how many keys can be pressed at once and still register. Test it by holding several keys together — if some don't light up, your keyboard has limited rollover or ghosting.
Why doesn't a key light up?
If a key never lights up when pressed, it may be physically dead, or the keypress is being intercepted by the OS or another app.
Does the layout match my keyboard?
The on-screen keyboard uses physical key codes, so positions match a standard QWERTY layout regardless of your language.