Click anywhere on this page, then press keys.
Check whether every key on your keyboard is working with this instant online tester. Press any key and it shows you the key name, the physical key code, and the numeric code, and it lights up the most recent keys you pressed so you can spot ones that are dead or sticky. This is genuinely useful when you have spilled something on a laptop, bought a used keyboard, or are troubleshooting a key that seems to repeat or not register. Developers can also use it to grab the exact event codes for a key binding. Nothing you type is stored or sent anywhere, it is only read to display the key information, so it is safe to hammer away. Just click into the page and start pressing keys to see them respond in real time.