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Laptop keyboard test

A compact laptop layout: press every key, including the function row and arrows, and see which ones respond.

0/ 104keys tested
Keyboard type
Click here, then press every key

Hold Esc for 1 second to stop

Last key: none yet

Event logShown only on this page, never saved or sent.

keycodelocationrepeatheld, ms
Press a key to see its events here.

Chatter (double input)0

No double inputs so far.

    A worn switch can send a second press right after you release a key. Press the suspect key many times; real chatter shows up again and again on the same key.

    Keys a browser can’t detect

    If one of these stays dark, it is not broken: the browser simply does not get it.

    • Fn is handled inside the keyboard and is never sent to the computer.
    • Print Screen: Windows sends only the release, so the key lights up when you let go (or not at all if a screenshot tool takes it).
    • Windows / ⌘ key: the system may open the Start menu or a shortcut first. On a Mac, other keys pressed while ⌘ is held do not report their release.
    • Media, brightness and volume keys go to the system, not to web pages.
    • Input-method keys (한/영, 한자, 変換, かな) may be taken by the system’s input method.

    This test runs in your browser and needs JavaScript. Turn JavaScript on to start it; the explanation and the checklist below work without it.

    How the laptop keyboard test works

    This page draws a laptop-style board: a short function row (Esc, F1–F12, Print Screen, Delete), the main block of your language's layout, a bottom row with Fn, and the small inverted-T arrow keys. There is no numeric keypad and no Insert/Home/End cluster, because most laptops don't have them as separate keys.

    1. Press Start keyboard test, or click the drawing.
    2. Press every key once. It glows while held and stays marked after release; the counter shows how many are done.
    3. Keys that stay dark are the ones to look at. Hold Esc for one second or press Stop capturing keys when you are done.

    Your laptop has a numpad or a different bottom row? Switch Keyboard type to Full size, or open the main keyboard test. On a MacBook use the Mac keyboard test.

    The Fn key and the function row

    On most laptops the top row does double duty: brightness, volume and media on one layer, F1–F12 on the other. Which one you get by default depends on the maker's Fn lock (often Fn + Esc, or a setting in the BIOS or the maker's app).

    The Fn key itself never reaches the browser, so it stays dark and is not counted. Brightness, volume and media actions also go straight to the system. To test the F keys, hold Fn while pressing the top row, or switch the Fn lock: when F1–F12 light up here, both the keys and Fn work.

    What a dead key pattern tells you

    The laptop keyboard guide covers drivers, Filter Keys and the other software causes. To see how many keys work together for games, try the rollover test; for typing speed, the typing test. Nothing you press is recorded or uploaded. More tools: device tests.

    Frequently asked questions

    How do I test my laptop keyboard online?

    Open this page, click the keyboard drawing and press every key once. Working keys light up and stay marked. Fn and media keys never reach a browser, so they stay dark even when they work.

    Why do F1–F12 change brightness instead of lighting up?

    Your laptop's top row is set to media keys. Hold Fn while pressing them, or turn on the Fn lock (often Fn + Esc), and test again.

    Several keys in one row stopped working. What does that mean?

    Laptop keys share circuits, so a group failing together usually means a loose ribbon cable or liquid damage rather than individual keys. A repair shop or the maker's service can check the connection.

    Can I test a Chromebook keyboard here?

    Yes. The letters, numbers and arrows test the same way. The Chromebook's special top-row keys (back, refresh, brightness) are handled by the system and may not light up.

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