Testeur de Clavier

Press any key to verify it works - with key history

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À propos de cet outil

Press keys on your keyboard and see them register visually, with a history of recently pressed keys - useful for testing whether all keys on a keyboard actually work correctly, especially useful when buying a used keyboard or diagnosing a suspected faulty key.

Comment utiliser cet outil

  1. Focus keyboard test areaClick test panel so key events are captured correctly.
  2. Press every keyCheck alphanumeric, modifiers, arrows, and function keys.
  3. Review key historyDetect missed or repeated unintended keystrokes.
  4. Diagnose hardware issueConfirm dead/sticky keys before repair or replacement.

Pourquoi l’utiliser

  • Quickly detects non-working or stuck keys.
  • Useful for QA of new/used keyboards.
  • Captures unexpected repeat events for troubleshooting.
  • No software install needed for diagnostics.

Usages courants

  • Testing a used keyboard before purchase.
  • Debugging missing hotkeys in workflow tools.
  • Verifying laptop keyboard after spills/repairs.
  • Checking gaming keyboard macro/key rollover behavior.

Conseils pour de meilleurs résultats

  • Test both left and right modifier keys separately.
  • Toggle NumLock/Fn layers if keys seem unresponsive.
  • Clean physically sticky keys before retesting.
  • Try another USB port/device to isolate hardware path.

Erreurs à éviter

  • Not focusing test window before key checks.
  • Skipping function and modifier key combinations.
  • Confusing OS shortcut interception with key failure.
  • Assuming one missed press always means hardware defect.

Questions fréquentes

Common reasons: checking a new or used keyboard for dead/faulty keys, diagnosing a key that seems unresponsive, or verifying all keys work correctly after a spill or repair.

It typically identifies and displays the specific key pressed, so you can confirm each individual key registers correctly rather than just generic keyboard activity.

The key history log can help you notice if a key is registering repeatedly without you pressing it multiple times, which would suggest a stuck or faulty key.

Yes. Keyboard Test is free for normal use with no account required, and ToolBox does not add a watermark to your result.

Most tools in this category run in your browser so the file stays on your device. If a tool needs a temporary server job, files are handled for that job only and are not kept as a lasting archive.

No install needed. Open Keyboard Test in your browser, add your file or paste your input, then download or copy the result.

Yes on modern mobile browsers. For large files, a desktop browser is usually faster and more reliable.

Try a different quality or format setting, use a smaller input, or open a related tool (for example compress before convert). Keep a copy of the original file before replacing it.

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