.appFree tool
Online keyboard test
Press any key and it lights up on the drawing. That’s how you check that every key works and how many keys your keyboard handles at once. Nothing to install, nothing is saved.
Press any key.
If F1-F12 change the volume or brightness instead of lighting up, press them while holding Fn.
- Keys checked
- 0 of 78
- Most keys pressed at once
- 0
- Keys not on the drawing
- none
How to test your keyboard
- Press every key in turn, row by row.
- If a key didn’t light up, press it again, harder and in the middle. Still nothing? The key doesn’t work.
- Hold down several keys at once, for example a s d f j k l. The counter shows how many of them the keyboard sees at the same time.
- Check Shift, Ctrl and Alt on both sides - each one lights up separately.
Your keyboard works - what’s next?
A good keyboard is half the job. The other half is fingers that know where the letters are. See how many words per minute you type in the free typing speed test, or start with finger placement on the keyboard.
Frequently asked questions
- How do I check that all keys work?
- Press each key in turn. A working key lights up red on the drawing and stays dark once it’s checked. A key that stays light after you press it sends no signal - it’s broken or stuck.
- Why doesn’t the Fn key light up?
- Fn is handled by the keyboard itself, not by the computer - it changes what other keys do, for example turning F1-F12 into volume or brightness keys. No signal reaches the browser, so no online test can see it. You can check it by pressing Fn together with a key it changes.
- Why doesn’t F10 (or another F1-F12 key) light up, but switches windows or changes the volume instead?
- On a Mac and on many laptops, F1-F12 control brightness, volume and windows by default. The system handles them itself, so the browser never gets them. Hold Fn and press the F key - then it lights up on the drawing.
- What is keyboard ghosting?
- A keyboard with ghosting loses some of the keys you press at the same time. Hold down several keys at once and compare the “most keys pressed at once” counter with the number of fingers on the keys. For typing, 3-4 keys at once is enough; games need more.
- Does the test work on a laptop and on a Mac?
- Yes, it works in the browser on any computer. On a Mac the drawing shows a Mac keyboard, with command and option - if your system was detected wrong, switch it above the drawing. Laptops usually have no numeric keypad - if yours has one, its keys show up below the drawing.
- Is this a typing speed test?
- No - this test only checks whether your keys work. You can measure your typing speed in words per minute in the free typing speed test.