About Keyboard Tester
Keyboard Tester is a free online tool that lets you test every key on your keyboard instantly.
It is designed to help users quickly identify faulty, stuck, or unresponsive keys without installing any software.
What does Keyboard Tester do?
- Detects key presses in real time
- Highlights pressed keys visually on a full keyboard layout
- Shows the last key pressed and keeps a key press history
- Counts total and unique keys pressed
- Supports both Windows and Mac keyboard layouts
Who is this tool for?
Keyboard Tester is useful for:
- Checking laptop keyboards
- Testing mechanical and gaming keyboards
- Diagnosing hardware issues before repair or resale
- Verifying keys after spills or physical damage
- Ensuring all keys work before purchase
Why Keyboard Tester?
- 100% Free: No ads, no sign-up, no hidden costs
- Privacy Focused: No keystrokes are collected or stored
- Lightweight: Built with vanilla JavaScript for instant loading
- Browser-based: Works on any device with a web browser
- Comprehensive: Tests all keys including function keys, numpad, and special keys
How it Works
The tool runs entirely in your web browser using JavaScript. When you press a key,
your browser detects the event and highlights the corresponding key on the screen.
No data is sent to a server — everything happens locally.
Privacy & Security
Your privacy is important to us:
- No keystrokes are recorded or stored
- No data is sent to external servers
- No accounts or downloads required
- No tracking of personal input
You can safely use this tool to test keys without worrying about data collection.
Supported Devices & Browsers
- Windows keyboards
- Mac keyboards
- Laptop keyboards
- Mechanical and gaming keyboards
- Modern browsers (Chrome, Edge, Firefox, Safari)
Why Keyboard Tester?
- 100% Free: No ads, no sign-up, no hidden costs
- Privacy Focused: No keystrokes are collected or stored
- Lightweight: Built with vanilla JavaScript for instant loading
- Browser-based: Works on any device with a web browser
- Comprehensive: Tests all keys including function keys, numpad, and special keys
Our Goal
Our goal is to provide a fast, simple, and reliable keyboard testing tool that works
instantly for everyone. No ads that get in the way, no unnecessary complexity —
just a useful utility that does one job well.
Contact Us
If you have feedback, suggestions, or questions, feel free to reach out via the
contact page.