Device Tester
Test your hardware in the browser — keyboard keys, a tone generator, a metronome, and a webcam/mic check. Everything runs locally, nothing is recorded.
Keyboard tester
Click the pad, then press keys. Hold several at once to check ghosting / n-key rollover.
Click here and press any key…
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Everything runs locally in your browser. No audio, video, or keystrokes are recorded or uploaded.