اختبار لوحة المفاتيح.

Uses a US full-size physical layout; ISO and other extra keys are listed separately. Fn, Windows/Command, Print Screen, media keys and some browser shortcuts can be handled by the operating system or browser and never reach the page. Press Esc three times to leave the test area.

The page reads KeyboardEvent.code to identify physical key positions independently of your language layout, and shows the key, code and location of the last key. Nothing you type is stored or sent.

Holding A, S, D and F together should show 4 keys held; a lower number suggests a ghosting or rollover limit.