Gaming Keyboard Tester — Test Keys & Rollover

For competitive FPS games like Valorant, CS2, or Apex Legends, 6KRO is sufficient. The most inputs you will typically need simultaneously are: W (forward) + A or D (strafe) + Shift (walk) + Space (jump) + Ctrl (crouch) = 5 keys. Most gaming keyboards with 6KRO handle this combination without ghosting. NKRO provides a meaningful advantage only in rhythm games (osu!, Clone Hero) and MMOs with macro-heavy builds requiring 6+ simultaneous presses.

Hold W + A + Shift + Space simultaneously — the classic gaming movement combination. If all four keys show in the Keys Held Now counter, your keyboard handles this anti-ghosting case. Next try adding Ctrl and one more key. A 6KRO keyboard will handle all six. Then try 7+ keys — if one drops, you have found your rollover limit. Proper anti-ghosting means no false inputs appear when multiple keys are held, even if the maximum count is reached.

Polling rate determines how frequently the keyboard sends its state to the PC — a 1000Hz keyboard reports every 1ms, while a 125Hz keyboard reports every 8ms. The tester measures key registration, not polling latency. For practical gaming, 1000Hz polling (standard on all modern gaming keyboards) ensures your keypresses are registered within 1ms. The tester will detect all keys regardless of polling rate.

If keys register correctly in this browser tester but are dropped in-game, the issue is with the game's input handling, not your keyboard. Common causes: (1) the game uses DirectInput or RawInput and handles held-key repeat differently; (2) in-game keybind conflicts — two actions on the same key; (3) anti-cheat software interfering with key event delivery; (4) the game's tick rate is low enough to miss very fast taps. Test by holding the key for 500ms+ — if it registers consistently, the hardware is fine.

Modern wireless gaming keyboards (Logitech Lightspeed, Razer HyperSpeed, Corsair Slipstream) achieve wireless latency of 1ms or less — indistinguishable from wired in blind tests. Bluetooth keyboards have higher latency (7–20ms) and are not recommended for competitive gaming. The key registration in this tester will be identical between wired and 2.4GHz wireless keyboards.

Macro keys (G-keys on Logitech, M-keys on Corsair, etc.) send custom keycodes that may or may not be forwarded to the browser. If your macro key is programmed to a standard key (e.g., G1 = F13), it will light up on the tester if your OS passes that keycode to the browser. If the macro sends a proprietary code that Windows handles internally (e.g., launch application), the browser will not receive it. To test macro keys, program them to standard F-keys in your keyboard software, then run the tester.