WAVESPEED AI KEYBOARD TEST Nothing leaves your device

100% FREE

Keyboard TestFind dead, stuck and double-pressing keys.

Press keys and watch them light up on a full keyboard: every key you test turns green, so a key that doesn’t work stands out at once.
Check how many keys register together, spot ghosting, stuck keys and chattering switches, and measure key repeat.

ANSI, ISO, JIS and MacRollover and ghostingStuck and double presses

No sign-up No upload No install

Listening: press any key

Keys tested0 / 104Turn every key green

Held now0none

Most keys at once0Hold several keys together

Repeat delay—Hold one key down

Repeat rate—

Double presses0None faster than 20 ms

Last key

Press any key. Its details appear here.

The page keeps keys like F5, Tab, Space and Backspace from doing anything else while you test. Some shortcuts belong to the browser or system and no page can catch them: Ctrl+W, Ctrl+T, Ctrl+N, Alt+F4, Alt+Tab, the Windows key and Cmd+Q. Fn and many media keys are handled inside the keyboard and never reach the browser.

Rollover and ghosting

Combination to check

WAShiftSpace

Registered together: 0 of 4

Press and hold all the keys of the combination. A key that never lights up while the others are held is blocked by the keyboard (ghosting).

Count as double press under

Typing area (optional)

Event log

Event	key	code	keyCode	Location	Modifiers	Held (ms)

Runs in your browser. Nothing is recorded, stored or uploaded unless you download it yourself.

THREE SIMPLE STEPS

How to test your keyboard online

Pick your keyboard

Choose ANSI, ISO or JIS, the size (full, TKL, 60 % or numpad) and PC or Mac so the picture matches your keyboard.

Press every key

Each key lights up while held and turns green once it has worked. Keys that stay gray haven’t sent anything.

Check the details

Hold combinations for rollover and ghosting, hold one key for repeat timing, and watch for stuck-key and double-press warnings.

How to use the keyboard test

How to read the results

Gray key that never turns green

The key sent nothing. Press it firmly a few times; if it still stays gray, the switch, its contact or the keyboard’s wiring is faulty — or it is a key the system keeps for itself, like Fn.

Orange key: double presses

The key went down twice within a few milliseconds of being released. That is switch chatter, a common sign of a worn or dirty mechanical switch. Compressed air or a switch replacement often fixes it.

Rollover and ghosting

“Most keys at once” is how many keys the keyboard reported together. If a combination stops at 2 or 3 of 4 keys, the missing one is blocked — that is ghosting, typical of cheaper keyboards.

WaveSpeed AI

Made for gaming and creating?

Create thumbnails, clips and artwork for your setup or channel with WaveSpeed AI.

Start creating Explore 1,000+ AI Models

1,000+ AI models
Image, video and 3D
Pay as you go

$1 in free credits for eligible new accounts. No card needed. Generators have separate account and credit requirements. The keyboard test is free.

Keyboard test FAQ

How do I test my keyboard online?

Open this page and press each key. Keys light up while you hold them and turn green once they have worked, so any key that stays gray isn’t sending a signal. The counter shows how many keys of the chosen layout you have tested.

How do I find a stuck key?

A key held down for more than three seconds turns red and a warning names it. If you aren’t pressing it, the key or its switch is stuck. The event log also shows a key that keeps repeating on its own.

What is keyboard ghosting and how do I test for it?

Ghosting (or key blocking) is when a keyboard can’t register some keys while others are held. Pick a combination such as W + A + Shift + Space, hold all of its keys and see whether every one lights up. The result shows how many registered together and which key was missing.

What is N-key rollover?

Rollover is how many keys a keyboard can report at the same time. “Most keys at once” shows the highest number seen. Many office keyboards stop at 2 to 6 keys; gaming keyboards often handle all of them (NKRO). Some keyboards report more keys only in a special mode or over a different connection.

Why does one key type two letters?

That is switch chatter: the contact bounces and the keyboard sends a second press a few milliseconds later. The test flags presses closer than 20 ms (you can change it) and marks the key orange. Cleaning or replacing the switch usually fixes it.

Why don’t Fn, Print Screen or media keys show up?

The Fn key is handled inside the keyboard and is almost never sent to the computer. Some media and system keys, and shortcuts such as Ctrl+W, Alt+Tab or the Windows key, are taken by the system or browser before any web page sees them. Keys the browser does send but that aren’t on the picture are listed under “Keys not on this layout”.

What is the difference between ANSI, ISO and JIS?

They are the three common physical layouts. ANSI (US) has a wide one-row Enter key and a long left Shift. ISO (most of Europe) has a tall Enter and an extra key next to the left Shift. JIS (Japan) adds keys for input-mode switching and has a shorter space bar.

Is anything I type sent anywhere?

No. The test runs entirely in your browser; key presses and the typing area are never stored or sent.

All Free Tools