⌨️Gaming Keyboard Diagnostic

Test for dead keys, ghosting, and mechanical switch health. Click anywhere to begin polling.

Esc

F10

F11

F12

Prt

Scr

Pau

Minus

Equal

Backspace

Tab

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Backslash

Caps

;

Enter

Shift

Ctrl

Win

Alt

Space

Alt

Win

Ctrl

Ins

Home

PgU

Del

End

PgD

↑

←

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→

Num

Ent

Live APM

ACTIONS / MIN

Max NKRO

SIMULTANEOUS

Keystroke Intensity

CLICKS PER SECOND

Keyboard Model

FOR GLOBAL STATS

Awaiting hardware events...

Keyboard Test Online – Check Every Key, Ghosting & Rollover Free

Verify Every Keystroke

One of the biggest frustrations in gaming is a key that doesn't register—or worse, a key that gets stuck during a match. This keyboard test utility identifies **dead keys** (switches that no longer fire) and **stuck keys** (one that fires without being pressed) immediately.

Our professional diagnostic suite highlights every input in real time. Instead of guessing if your 'W' key is failing, you get a clear visual confirmation for every single switch on your board, including function keys, numpads, and media keys.

Connecting through standard browser events means zero-delay diagnostics. Everything runs locally on your PC, ensuring total privacy and near-instant response times.

Knowing exactly which keys work takes moments. Use the Keyboard Test and get instant confirmation for every switch on your board right now.

High-end mechanical keyboard with glowing RGB and diagnostic UI

How to Use the Keyboard Test: Step-by-Step

Testing your keyboard at mygamepadtester.com is simple. Follow these six steps to diagnose dead keys, stuck switches, and ghosting issues.

Open & Focus

Open the tool and click anywhere on the page to focus. The browser only captures inputs when the tab is active.

Press Any Key

Observe the virtual layout. A healthy key will turn Dark Green immediately upon being pressed.

Check F-Keys

Function keys (F1-F12) often require the Fn modifier. Test them both ways to ensure the signal is sending.

Watch for Yellow

A yellow highlight indicates a **stuck key** that is sending repeating signals without being physically pressed.

Step-by-step mechanical keyboard testing infographic

Why Ghosting Is a Real Problem for Gamers

Matrix Limits

Most keyboards use a grid matrix. When you hold three or more keys that form a rectangle pattern, the controller can drop a key. This is called **Ghosting**.

Hold **W + A + Shift + Space** in our tool. If one key doesn't light up, your keyboard is ghosting. This can get you killed in FPS games when movement stops mid-jump.

If your ghosting looks fine but inputs still feel slow, you should test your input lag to measure actual hardware latency.

Side-by-side comparison of Keyboard Ghosting vs NKRO

Key Features of the Keyboard Tester

Feature	6KRO	NKRO
Simultaneous Keys	6 max	Unlimited
Typical Keyboards	Most budget / office boards	Most mechanical gaming boards
Gaming Impact	Can ghost on 4+ key combos	Every key registers independently
Connection	USB HID limit	USB or PS/2 passthrough

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Stuck Key Detection

Immediate visual color-coding for switches that are repeating or hardware-locked in the firing position.

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Polling Rate Benchmark

Monitor your Input Latency and Polling Rates to ensure zero-lag gaming performance.

Keyboard Polling Rate Latency Comparison

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Matrix Visualizer

Hold multiple keys simultaneously to verify N-Key Rollover (NKRO) and ghosting limits.

How to Fix a Keyboard That Fails the Test

Isolate the Cause

If it's a mechanical board, check for debris with compressed air or follow a guide from Cherry MX for proper cleaning and maintenance of mechanical switches.

For software issues, expand Keyboards in Device Manager, uninstall the driver, and restart. Windows will reinstall the standard HID driver automatically.

Console gamer too? Make sure to check your controller's deadzone to optimize your full peripheral setup.

Cross-section diagram of a mechanical keyboard switch

Who Should Run This Test?

Competitive gamers, typists, programmers, and hardware managers use this tool to verify hardware health. It's the standard for checking new keyboard baselines or testing used equipment before purchase.

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Keyboard Test FAQ

Yes. The tool reads standard browser keyboard events, which are sent by every keyboard regardless of internal switch technology. Mechanical boards will generally perform better on simultaneous 'Ghosting' tests.

Some keys are intercepted at the OS-level (like Print Screen or Windows Key). For F-keys, try holding the 'Fn' button. If they don't light up but perform their function, they are working correctly.

A yellow key is a 'Stuck Key'—it is sending repeating signals without being physically pressed. This usually points to debris in the switch or a mechanical failure requiring cleaning or replacement.

Hold multiple keys at once (e.g., W+A+Shift+Space). Check the 'Pressed now' counter. If you are holding 4 keys but only 3 are showing, your keyboard has hit its ghosting limit.

6KRO means you can press 6 keys at once. NKRO (N-Key Rollover) means every key on the board can register independently with no limit. Most gaming boards are NKRO.

No. All processing happens client-side in your browser. No data is ever uploaded to a server or saved in history. Privacy is 100% guaranteed.

This means your hardware is perfectly healthy! The problem is likely an in-game keybind conflict or a 'Steam Input' remapping issue. Check your game settings and disable keybind-modifying extensions.

Verify Every Keystroke.

Don't let a dead switch get you killed in-game. Run the test above and verify every key on your board right now.

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