Utilore

Keyboard Test

Press the keys one by one: each one lights up the moment the browser sees it. A key that stays dark is either broken, or one the browser never gets — and the page says plainly which is which.

Press the keys one by one — each one lights up when the browser sees it.

What the browser received

    Fn, the brightness keys and the power button never reach the browser at all: the keyboard controller and the operating system take them first. If one of those does not light up, that says nothing about the key.

    Combinations with Ctrl, Alt and Cmd are left to the system on purpose — otherwise you could not refresh the page or close the tab. Press those keys on their own to check them.

    Nothing leaves this tab: key presses are read by the page itself and are not sent, stored or logged anywhere. The page works with the network switched off.

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    How to use

    1. Press the keys one at a time. Each key turns green once it has been pressed, and blue while you hold it down.
    2. Watch the counter: it shows how many keys of the layout you have already covered.
    3. If a key keeps glowing after you lift your finger, the page warns you — that is a stuck key, and it is what makes a keyboard type by itself.
    4. Press «Start over» to clear the marks and check another keyboard.

    Good to know

    The test reads the physical key, not the letter

    The page counts by the key's position on the board, not by the character it produces. On a Russian or French layout the same key gives a different letter, and with Shift it gives another one still — but the key is the same. That is what you are checking when the keyboard is at fault, so the layout you have switched on does not matter here.

    Some keys never reach the browser

    Fn is handled by the keyboard's own controller and never leaves it. Brightness, volume and the power button are taken by the operating system before any page sees them. If one of those does not light up, it says nothing about the key — a test that claimed otherwise would be lying to you.

    Why combinations are left alone

    Ctrl, Alt and Cmd combinations are passed on to the browser on purpose. If the page swallowed them, you could not reload it or close the tab. Press those keys on their own and they will register normally.

    Frequently asked questions

    A key does not light up — is it broken?

    Most likely yes, but check two things first. If it is Fn, brightness or volume, the browser never receives it and the test cannot see it. And if the key works in another program but not here, tell us — that would be our bug, not your keyboard's.

    How do I know a key is stuck?

    Lift your finger. If the key stays blue and a warning appears, the keyboard is still reporting it as held down. That is exactly what makes text repeat itself or shortcuts fire on their own.

    The keyboard types the wrong letters. Is it broken?

    Usually not. Wrong letters almost always mean the wrong layout is selected in the system, not a hardware fault. This test shows the physical key, so you can tell the two apart: if the right key lights up but the wrong letter appears, the keyboard is fine and the layout is not.

    Does it work with an external keyboard?

    Yes. The browser does not distinguish between a laptop keyboard and a plugged-in one, so both are tested the same way. To find out which of the two is faulty, unplug the external one and repeat the test.

    Is what I type sent anywhere?

    No. The key presses are read by this page and go no further: nothing is sent, stored or logged. The page keeps working with the network switched off — you can check by disconnecting.

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