Test the keys your browser receives
Focus the pad, then press keys or combinations. Every browser-exposed physical code and key value appears below.
Focus here and press keys
Ready. Nothing is uploaded.
Event trace
Recent events appear here. Export keeps the full capture until the capture limit is reached.
What does rollover mean here?
The pressed-key map shows keys currently down. Maximum simultaneous keys is the largest set of distinct codes held together during this capture. Repeat events are marked separately; releasing a key removes it from the held set.
What this browser can measure
The operating system can reserve shortcuts, and layout changes key values. Missing or ghosted events cannot certify an electrical keyboard fault. Tab still leaves the pad. See the event and timing rules.
Try the related task
- Keyboard speed test: Choose a key or use the whole keyboard, then see presses per second, APM, per-key counts and your best run.
- Keyboard double press test: Test one key at a time, inspect same-key intervals and flag suspected chatter without claiming a browser can prove switch failure.
- Typing test: Type a licensed prompt, review WPM, accuracy and every error, then practise the missed words locally or export the measured result.
- Gamepad test: Connect a controller and inspect every button, trigger and stick value live, including drift and browser-support limits.