Keyboard Test
    Input · Laptop keyboard

    Laptop keyboard test

    Press every key on your laptop. Each one lights up as it registers, so you can find dead keys, keys that stick and keys that type twice.

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    Keyboard check

    Step 1 of 4 · Every key, rollover, then your speed.

    1. 1Keyboard test
    2. 2Keyboard ghosting test
    3. 3Typing test
    4. 4Spacebar counter
    Next: Keyboard ghosting test

    About the laptop keyboard test

    Updated

    Laptop keyboards fail differently from desktop ones: a spill, a worn ribbon cable or a single broken switch can knock out one key or a whole row. This test shows every key your laptop sends to the browser on a full key map, counts presses and shows which keys are held, so you can tell a dead key from a sticky or repeating one before you pay for a repair or buy a used laptop.

    How to use it

    1. Click anywhere on the page so it receives your key presses.
    2. Press every key once, row by row, and watch each one light up.
    3. Hold a key down: it should stay lit and count once, not keep adding presses.
    4. Note any key that never lights up, or lights up without being pressed.

    Frequently asked questions

    Why do several keys in a row stop working at once?

    Laptop keys are wired in a grid. When a whole row or column fails together, the cause is usually liquid damage or a loose keyboard cable rather than the individual keys.

    One key types twice. What's wrong?

    That's key chatter, usually from dirt or a worn switch. On butterfly-switch MacBooks it's a known fault. Try compressed air first; if it continues, the key or keyboard needs replacing.

    Why don't Fn or brightness keys light up?

    Fn is handled by the laptop's firmware and never reaches the browser, and many media keys are captured by the operating system first. That's normal, not a fault.

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