Keyboard input tester
Press any key to see whether the browser receives the input and which physical key code is reported.
Local testing only Start testing
Key input, code, and button response test.
Keyboard Key Tester
Use this keyboard key tester to check every key press, keyboard input, and button response in real time without installing software.
The keypress log is local to this browser session and is not uploaded.
Start testingLive keypress diagnostics
Live keypress diagnostics
Run the Keyboard Key Tester
Shows the last key and currently pressed keysTracks tested and untested layout keysExports a local key test report
Inspection flow
Inspection flow
1. Full key pass
0/104Press every key in the selected layout until the progress reaches 100%.
2. Ghosting combos
0/4Hold each listed combo and confirm all keys appear together.
3. Chatter 10-tap check
0/10Tap Press a key ten times with normal pressure, then review possible chatter.
W + A + Shift + SpaceW + D + Shift + SpaceQ + W + E + RA + S + D + F
Live status
Test stats
0Tested keys
104Untested keys
0Pressed now
0Max simultaneous
0Possible issues
- Last key
- None
- Currently pressed
- None
Ghosting test
Rollover check
- Current pressed keys
- None
- Max simultaneous keys detected
- 0
Try common gaming combinations to check for possible ghosting.
W + A + Shift + SpaceW + D + Shift + SpaceCtrl + Shift + EscQ + W + E + RA + S + D + F
Diagnostics
Possible issues
- Possible chatter
- None detected
- Possible stuck keys
- None detected
These are browser-based estimates. Retest a suspicious key several times before treating it as a hardware fault.
Local report
Export results
Keyboard Tester Online Report ============================= Generated at: 2026-05-15T07:32:42.378Z Selected layout: Windows Full-size Browser / OS: Unknown browser on Win32 Tested keys: 0/104 Untested keys: 104 Untested key list: Esc, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, PrtSc, ScrLk, Pause, `, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, -, =, Backspace, Ins, Home, PgUp, Num, /, *, -, Tab, Q, W, and 64 more Max simultaneous keys detected: 0 Possible stuck keys: None Possible chatter keys: None Pass / fail checklist --------------------- All layout keys tested: CHECK No possible stuck keys: PASS No possible chatter keys: PASS Multi-key input detected: CHECK Issue summary: 104 layout keys were not tested; multi-key rollover was not meaningfully tested Notes: Browser-based estimate. Some hardware keys, Fn keys, media keys, and system shortcuts may not be detectable.
ChecklistAll keys: CHECKStuck keys: PASSChatter: PASS
Keyboard button tester
Use the virtual keyboard to confirm each button on the selected layout responds when pressed and released.
Keyboard keypress history
The tool keeps recent key events so you can compare active keys, tested keys, and possible repeated triggers.
How to find missing or broken keys
If a normal key never highlights after repeated attempts, test it in another layout or browser before treating it as a broken key.
Export a key test report
Download a TXT or JSON report with tested keys, untested keys, stuck-key flags, and possible chatter keys.
Help
What is a keyboard key tester?
It is a browser tool that shows whether individual key presses are detected and which physical key code fired.
Can it test every key?
It can test keys exposed to the browser. Some Fn, media, power, and system shortcut keys may be intercepted before the page receives them.