Utility
Keyboard Tester
Test every key, right in your browser.
Keyboard Tester shows you exactly which keys register as you press them — no install, no sign-up. Diagnose a sticky key, a dead switch or ghosting in seconds.
Overview
Find the faulty key in seconds.
Whether you're checking a used keyboard before you buy, chasing a key that double-types, or testing a brand-new board for dead switches, Keyboard Tester gives you a clear answer fast. Press keys and watch them light up on a full on-screen layout, each with its name and key code.
It runs entirely in your browser — nothing to install, no sign-up, and your keystrokes never leave your device. Hold several keys at once to test rollover and spot the ghosting your board can't handle.
Features
What's inside
Live key detection
Press any key and watch it light up instantly, with its name and key code.
Full-layout view
A complete on-screen keyboard so you can spot a missing or stuck key at a glance.
Rollover & ghosting
Hold several keys at once to test n-key rollover and find combinations your board can't register.
Nothing to install
Runs entirely in your browser. Your keystrokes never leave your device.
At a glance
- Price
- Free
- Install
- None
- Signup
- Not required
- Runs in
- Your browser
- Tests
- Keys · rollover · ghosting
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