Online Keyboard Tester
Test your keyboard online and see which keys respond. Check letters, numbers, arrows and modifiers individually, or hold several keys to test a combination.
Choose a layout and press keys to spot missing inputs before you type, code, or game.
Keyboard layouts by family
Find a keyboard layout by country or language.
QWERTY20 layouts
QWERTZ9 layouts
AZERTY4 layouts
Cyrillic6 layouts
Greek1 layout
Arabic2 layouts
How to test your keyboard keys
- Select the layout and language that match your keyboard.
- Click an empty area of the tester and press each physical key. Watch the matching key highlight and check Last key, Total detections and Keys held.
- Use Stay lit to keep a record of pressed keys, or Find missing to start with the keys marked and clear them as you test. Reset highlights to repeat the check.
Check letters, modifiers and combinations
Work through the letter and number rows, then test Shift, Ctrl, Alt, arrows and the spacebar. Hold several keys together to see which inputs the browser receives. Hide the numpad for a laptop or tenkeyless keyboard, and show it again when testing a full-size board.
When a key does not light up
First check that the page has focus and the selected layout matches your keyboard. Try the key on its own and in another application. Fn, media keys and some operating-system shortcuts are handled outside the page, so a missing browser highlight alone does not prove a broken switch. If an ordinary key also fails in other applications, reconnect the keyboard or test it on another device to narrow down the problem.
You can also check repeated spacebar presses with the spacebar counter.
For combinations that fail only when held together, follow the keyboard ghosting and rollover test guide.
If a key registers but produces an unexpected symbol, follow the wrong-character and keyboard-layout guide.
Keyboard tester questions
How can I check whether every key works?
Use Stay lit and press keys one by one, or use Find missing and work through the keys that remain marked. Test left and right modifiers separately. Some system-reserved keys may not reach the browser even when the hardware works.
Which keyboard layouts can I test?
The tester supports QWERTY, QWERTZ, AZERTY, Cyrillic, Greek, Japanese, Korean and Arabic mappings with regional variants. Open a family in the layout directory to find options such as Finnish, German or Japanese. Selecting a layout changes the visual mapping; it does not change your operating-system keyboard settings.
Can I use this with a laptop or a Mac keyboard?
Yes, when the browser receives the key events. Use your matching regional layout, and hide the numpad if your keyboard has none. Built-in laptop keyboards and external USB or Bluetooth keyboards use the same browser-based test. Fn-layer and system shortcuts can behave differently between devices.
Can this test keyboard ghosting or rollover?
Hold the combination you want to check and watch the highlighted keys and Keys held count. Missing inputs can reveal a combination that the browser did not receive. Browser and operating-system shortcuts can also intercept keys, so compare suspicious combinations in another application before drawing conclusions.
What is the difference between the highlight modes?
Live highlight shows keys while they are held. Stay lit keeps a key highlighted after release. Find missing starts with keys marked and clears a mark when that key is detected. Reset highlights restarts the selected mode without changing your layout.
Are my keystrokes uploaded?
Key events update this tester in your browser. We do not store individual keypress sequences in our own database. Hosting and analytics may process standard request data as described in the Privacy & Data Policy.