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Device tests

Keyboard test

Press keys — each one that registers lights up on the layout and the counter shows how many you have tested. The test flags a key that won’t release and shows how many keys your keyboard handles at once, which matters for gaming.

Keystrokes are processed on this page only and never sent anywhere. While the test is on, shortcuts like F5 or Ctrl+W are blocked so you don’t close the tab by accident; exit with the “Exit” button or a double Esc.

Press “Start test”, then press keys.

Key log

    Everything runs in your browser: sound, video and keystrokes are never sent or stored.

    What next

    How to read the result

    • Green key — press and release registered. Grey keys are untested.
    • Red key — stayed down for over three seconds while you pressed others: a sign of a sticky key.
    • Rollover — the W+A+S+D test should register 4 of 4. Fewer means the keyboard blocks combinations (ghosting).
    • Fn, Power and some media keys are invisible to browsers — that’s not a fault.

    More tests

    Frequently asked questions

    What if a key doesn’t light up?
    Press it again firmly in the centre. If it never registers, there is dirt under the keycap or the switch is faulty. On laptops, check that Fn Lock is not on.
    What are ghosting and anti-ghosting?
    Ghosting is when a keyboard ignores the third or fourth key pressed at once. Anti-ghosting and N-key rollover remove that limit, which matters for games.
    Why doesn’t the test work on my phone?
    It needs a physical keyboard. Connect one to your tablet or phone over Bluetooth and the test will work.
    Is anything I type saved?
    No. The key log is visible only to you and disappears when you leave the page.