Question 1

How do I test my keyboard for broken keys?

Accepted Answer

Simply press each key on your keyboard. The visual layout highlights every key you press in real time. If a key doesn't highlight when pressed, it may be broken, stuck, or not registering. The tester works with all keyboard layouts.

Question 2

What is keyboard ghosting?

Accepted Answer

Ghosting occurs when pressing multiple keys simultaneously causes unintended key registrations. Test it by pressing 3+ keys at once — if extra keys appear highlighted that you didn't press, your keyboard has ghosting issues. Gaming keyboards with anti-ghosting circuitry handle this better.

Question 3

What is N-key rollover (NKRO)?

Accepted Answer

NKRO means every key press is registered independently, no matter how many keys you press simultaneously. Our tester shows a real-time count of pressed keys. Mechanical keyboards typically support full NKRO via USB, while membrane keyboards may be limited to 6-key rollover.

Question 4

Does this work with mechanical keyboards?

Accepted Answer

Yes! The keyboard tester works with all keyboard types — mechanical (Cherry MX, Gateron, Kailh), membrane, scissor (laptop), and optical switch keyboards. It detects key events via the browser's KeyboardEvent API.

Question 5

Can I test keyboard input latency?

Accepted Answer

The tester shows key press and release events with timestamps. While browser-based tests can't measure hardware latency precisely (display and OS add overhead), you can compare relative response times between different keyboards.

Question 6

How do I reset the keyboard test?

Accepted Answer

Click the 'Reset' button to clear all highlighted keys and start fresh. This is useful when you want to systematically test every key from scratch.

Question 7

Does it work with non-English keyboard layouts?

Accepted Answer

Yes, the tester detects physical key positions using key codes, so it works regardless of your keyboard layout (QWERTY, AZERTY, QWERTZ, Dvorak, etc). The visual display shows the standard US layout as a reference.

Question 8

Can I test my laptop keyboard?

Accepted Answer

Absolutely. The tester works with laptop keyboards including special function keys (Fn key combinations may not register in browsers). External keyboards connected via USB or Bluetooth also work perfectly.

Keyboard Tester

Frequently Asked Questions