Keyboard Tester Online — Test Every Key

Press keys and watch the on-screen map react instantly. The tester tracks physical key codes, keys tested during this session, currently held keys, maximum simultaneous keys and possible rapid repeat symptoms.

FreeNo installNo accountLocal-firstMobile-aware

LIVE DIAGNOSTIC

Live keyboard tester

Click the keyboard panel to focus it, then press keys. Browser-reserved shortcuts may not be exposed to the page.

Input stays in this page

Ready.

WHAT IT CHECKS

What this keyboard tester checks

Keydown and keyup events
Physical KeyboardEvent.code values
Keys tested during the current session
Currently held keys and maximum simultaneous count
Possible rapid repeated non-auto-repeat events that may deserve a retest

READ THE RESULT

How to interpret the result

A working physical key normally creates a keydown event and later a keyup event. Missing events can come from the keyboard, connection, remapping software, browser shortcuts, accessibility settings or the operating system. Some special media/vendor keys are not standardized and may not appear on a generic map.

QUICK WORKFLOW

How to use this test

Use repeatable conditions. One browser result is a diagnostic clue, not a complete hardware verdict.

Focus the tester

Click or tap inside the keyboard panel.

Press each key

Work across your keyboard row by row. Tested keys remain marked so you can see what is left.

Check problem keys repeatedly

If a key misses, sticks or types twice, press it several times and compare another browser or application.

Open the rollover test

For gaming combinations and simultaneous-key limits, use the dedicated NKRO / rollover test linked below.

METHOD & LIMITATIONS

What the browser can — and cannot — tell you

This browser test listens for KeyboardEvent data. The code value is intended to identify physical key position, but support and special-key behavior vary across devices and browsers. Passwords or text fields are not part of this tester — do not type sensitive information here.

Technical reference: MDN — KeyboardEvent.code ↗

HELP

Common questions

Does this keyboard tester record what I type?

No. The key events update the local visual tester. NovaTools does not send the key stream to a server.

Why does a shortcut key not appear?

The browser or operating system can reserve combinations such as system shortcuts, media keys or security commands before the page receives them.

Can it detect keyboard chatter or double typing?

It can flag very rapid repeated non-auto-repeat key events as a clue. Retest suspicious keys because browser scheduling and the operating system can affect event timing.

How do I test NKRO or ghosting?

Use the dedicated Keyboard Rollover Test, which focuses on simultaneous key combinations and reports the maximum keys observed together.