Input
Keyboard test
See whether keys stick, miss, or respond as you press them.
Start the test, then press keys. Input is recorded only while focus is in the test area. Results are browser observations, not hardware certification.
Sizes are visual layout previews only — not exact physical keyboard models. Legends and arrangements vary by product.
- Not pressed yet
- Pressed now
- Confirmed in browser
- May be reserved (unverified)
Keys confirmed in browser 0 / 104
On small screens, scroll the keyboard sideways (keys keep their size). A physical keyboard is needed for a real check.
This diagram uses a common 104-key ANSI reference. Laptop and language-specific keys may differ. Mac changes the key labels, not the physical layout.
Keys confirmed in browser: 0
Keys held now (browser): 0 · Max simultaneous observed (browser): 0
Win, Print Screen, some function keys, and OS/browser global shortcuts may never appear here. Treat those as UNVERIFIED — not automatic hardware failure.
Details and limits
How to check
Start the test, keep focus in the test area, then press keys. Pressed, confirmed, and untested keys use color plus shape marks. Leaving the window or test area clears only the pressed highlight. While the region is active we try to suppress page defaults for Escape, function keys, arrows, and similar keys — but OS/browser global shortcuts may still win.
Limits
Win, Print Screen, some Fn/function keys, and browser global shortcuts may never reach the page. Those are marked reserved; missing events alone are not hardware failure. This tool only observes what the browser receives.
If something feels wrong
If one key never responds, try another port, a wired connection, and conflicting app shortcuts first.
FAQ
Hangul/English or Fn keys are not detected.
Many environments handle them in the OS or firmware first. Unobserved is not always broken.
A key looks like it fired many times.
We separate held-key auto-repeat from odd repeats. Try a short retest.