Keyboard Ghosting & N-Key Rollover (NKRO) Tester
Press multiple keys simultaneously to test matrix anti-ghosting and rollover capacity.
Keyboard Ghosting & N-Key Rollover (NKRO) Tester
Press multiple keys simultaneously to test matrix anti-ghosting and rollover capacity
How to Use Keyboard Ghosting & N-Key Rollover (NKRO) Tester
1. Focus Testing Area
Click inside the interactive virtual keyboard to focus the browser key listener.
2. Press Multiple Keys Simultaneously
Press gaming combinations (e.g. WASD + Shift + Space) or type chords with all fingers at once.
3. Verify N-Key Rollover (NKRO)
Active keys illuminate green in real time to confirm zero dropped inputs, matrix blocking, or ghost keys.
How This Utility Works
Interactive mechanical keyboard matrix testing tool. Detects simultaneous key presses, tests N-Key Rollover (NKRO) and 6KRO limits, highlights held keys on a visual keyboard layout, and records peak simultaneous actuation counts.
Hardware testers communicate strictly with browser Gamepad, Canvas, and Display APIs. No background drivers or telemetry are installed.
Frequently Asked Questions
What is keyboard ghosting?
Ghosting occurs when certain multi-key combinations fail to register due to hardware matrix wiring limitations.