About KeyboardTestOnline

KeyboardTestOnline is a free, browser-based keyboard tester. Press any key and see whether it registers: no install, no account, and nothing you type leaves your device.

Why this site exists

Dead keys, stuck keys, and ghosting are the most common keyboard faults people hit, and diagnosing them shouldn't require installing software or signing up for a service. This site puts a working tester in the browser and pairs it with guides that walk you from diagnosis to a fix: test first, then decide.

What you get

• Free, forever. No paywalls, no sign-ups, no trial timers.
• No install. Runs in any modern browser on Windows, macOS, and Chromebook.
• Private by design. Key presses are processed locally and never sent to a server.
• Tools for real problems. Dead-key checks, polling rate, latency, ghosting, chatter, CPS, and switch testing.

How it works

The tester listens for real keyboard events in your browser and renders them on a virtual keyboard. The whole thing is a static site: no backend database receives your input. For more on what is and isn't collected, see the privacy policy.