Loading keyboard tester…
0Keys tested
0Held now
0Max rollover
0Key presses
Some hardware keys, especially Fn and certain media keys, are handled by the keyboard or operating system and may never reach the browser.
How to check your keyboard
- Press each physical key once and make sure its on-screen key turns green.
- For gaming combinations, hold keys together. Try W + A + Shift + Space and watch “Held now”.
- If a key stays gray, test it in another app or browser before treating it as a hardware fault.
What a failed key looks like
A dead or blocked key produces no browser event, so its tile never changes. Missing keys only during multi-key combinations point more toward rollover or ghosting limits than a dead switch.
What this means
Run the test to interpret your result
Your result will be explained here, including what is normal, what may indicate a problem, and the most useful next step.
Contextual replacement recommendation
Reserved for a relevant product recommendation when a result suggests a hardware issue.
View options →