Keyboard Tools
Keyboard Tester — Test Your Keyboard Online
Test your keyboard online for free. Press each key and watch it light up — keys you have pressed stay green, so you can quickly spot dead, stuck or non-responsive keys.
About this keyboard
A keyboard tester is the fastest way to check a new or second-hand keyboard for faults. This tool listens to your physical key presses and highlights each key on screen, marking it as tested. If a key never lights up, it may be dead or disconnected; if several keys fail together you may have a ghosting or rollover limit.
How to use
- Press any key — Press keys on your physical keyboard — each one lights up on the screen.
- Watch what stays green — Tested keys stay marked, so you can see which keys you have not pressed yet.
- Reset to test again — Press Reset to clear the marks and start a fresh test.
Frequently asked questions
How does the keyboard tester work?
It listens to the key-down and key-up events from your physical keyboard and lights up the matching key on screen, marking it as tested.
Can it find a stuck or dead key?
Yes. If a key never lights up when you press it, it is likely dead or disconnected; a key that stays lit may be stuck.
Do I need to install anything?
No. The keyboard tester runs entirely in your browser.