Productivity

How to Use the Keyboard Tester

2026-11-124 min readBy Apex Tool Station Team

Press keys to test your keyboard. Each key lights up when it works — find stuck or dead keys quickly.

100% free No signup Works in your browser

1. What is the Keyboard Tester?

Check a new or second-hand laptop keyboard, or find out which key is not responding. Press each key and it turns green on the on-screen keyboard. The tester shows the exact key name and code, so you can also check special keys like Fn combinations and media keys.

2. How to use the Keyboard Tester

Here is the whole process, step by step. It takes less than a minute from opening the tool to seeing your result.

1Open the tool and use the on-screen controls — everything runs in your browser.
2Copy or download your result with the buttons under the output.

Your result updates as you type — there is nothing to press and nothing to wait for.

Everything runs in your browser — your files and text never leave your device.

3. What you can do with it

Start over any time with the "Reset" button — it clears the tool so you can begin again.

4. Tips for best results

Your text never leaves your device — The tool runs entirely in your browser using JavaScript. Nothing is uploaded, so you can paste private documents without worry. That also means there is no account to create and no file to upload.
It works on your phone too — Open the tool in any modern browser on Android or iPhone. The layout adjusts to the screen and everything works the same way on a small screen as on a desktop.