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Keyboard test

Press any key. It lights up on the keyboard on screen, so you see right away which one stays silent.

Opens full screen and takes over every key. To leave: hold Esc. Print Screen and Fn stay with the system and no browser takes them over.

How to read the keyboard on screen

  • Held down now
  • Already answered
  • Dead key in this layout
  • Answered twice

Print Screen and Fn stay out of reach for any browser. Print Screen is taken by the system, so a screenshot happens during the test and that is fine; the key counts when you release it. Fn sends nothing, because the keyboard handles it on its own. On Windows 11 you can switch that screenshot off in system Settings, under Accessibility, Keyboard.

What the check found

Keys covered 0 / 0
Presses counted 0
Most keys at once 0 Hold several keys together. A good board keeps counting.
Double presses 0 A key answers twice within 15 ms although nobody released it. A worn switch behaves like this.
Time from press to mark on screen 0 ms

What next

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