Keyboard Ghosting Test

Hold multiple keys to check ghosting and NKRO.

Held

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Max together

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Status

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Hold several keys at once

If some keys drop while others stay held, your keyboard is ghosting those combos.

How to use

Hold multiple keys to check ghosting and NKRO. Free in your browser. No install required.

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Free in the browser

No signup. The mouse tester opens in the browser.

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FAQ

Keyboard Ghosting FAQ

+ What is key ghosting?

Ghosting is when extra keys fail to register, or a key you did not press appears, because the keyboard cannot read that combination.

+ What is NKRO?

N-key rollover means every key still registers when many are held. Gaming keyboards often promise this. This page lets you check.

+ How do I test?

Hold several keys at once, including WASD plus modifiers. Keys that never light are dropped by the keyboard or the browser.

+ Why do some OS shortcuts never show?

The operating system may steal the combo before the page sees it. Try a set of letter keys with no system shortcut.

+ Do I need an account?

No. The tool runs in your browser. There is no signup, and the result shows on this page.