Free Online Keyboard Tester
Test every key on your keyboard to check for dead or stuck keys.. Free, no signup, works in your browser.
About Keyboard Tester
This keyboard tester displays a virtual keyboard layout and highlights each key as you press it. Quickly identify dead, stuck, or ghosting keys on any keyboard. Runs entirely in your browser — no software downloads or uploads required.
Frequently Asked Questions
How do I test if all my keyboard keys work?
Press every key one by one. This tool highlights each key as it registers. Any key that does not light up may be dead or have a faulty connection.
What is keyboard ghosting?
Ghosting is when pressing multiple keys simultaneously causes some keys to not register. Gaming keyboards with N-key rollover (NKRO) prevent this by allowing every key to register independently.
Can I test my external keyboard with this tool?
Yes. This tool works with any keyboard connected to your computer — USB, Bluetooth, or built-in laptop keyboards. Just plug it in and start pressing keys.
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