Step 01
Choose layout
Start with a Windows full-size board, then switch to compact, Mac, or laptop layouts when needed.
Local testing only Start testing
100% FREE - WORKS IN YOUR BROWSER
Keyboard Tester Online
Test every key instantly.
Find broken or stuck keys, and run quick ghosting, rollover, and double typing checks right in your browser. No installation required.
Start testing nowNo install. No signup.Runs locally in your browser.
Live diagnostics
Run a complete keyboard tester check
Ghosting detectionRollover checkStuck-key detectionDouble typing checkLocal TXT & JSON export
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: 2026-05-15T07:32:42.363Z 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
Workflow
How to use keyboard tester
Pick a layout, press keys, and review hardware signals without leaving the testing surface.
Step 02
Press and compare
The virtual board responds to browser key events so missing, stuck, or repeated inputs are easy to spot.
Step 03
Export evidence
Save a local TXT or JSON report for repair notes, support tickets, or device inspection records.
Features & Diagnostics
Advanced keyboard testing features
More than just a key press checker. Diagnose complex mechanical switch issues directly in your browser.
Input map
Full keyboard layout test
Test function keys, navigation keys, arrows, modifiers, and the numpad all on one visible surface.
Ghosting
Keyboard ghosting & NKRO test
Hold multiple keys simultaneously to check your keyboard's N-Key Rollover capabilities.
Chatter
Key chatter & double typing
Identify faulty mechanical switches by flagging repeated key events that happen too quickly.
Stuck keys
Stuck key detection
Easily spot keys that register continuous input, helping you find sticky switches or liquid damage.
Privacy model
Is keyboard tester safe?
All keystrokes are processed locally in your browser. We do not upload, store, or share what you type.
100% localNo account, install, or upload step.
No data collectionKeystrokes update the UI only in this session.
Transparent reportsExports are generated on your device.
Help
Common keyboard testing questions.
How do I test my keyboard online?
Click the testing area, then press each key on your physical keyboard. A working key should highlight on the virtual keyboard while pressed and stay marked after release.
Does this keyboard tester record what I type?
No. Keystrokes are processed locally in your browser to update the on-screen keyboard, stats, and local report.
Can this tool detect double typing?
It can flag possible chatter when the same key triggers repeated keydown events very close together. Retest suspicious keys before assuming a hardware fault.