K KeyboardTester
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Switch testing for mechanical keyboards.

Mechanical Keyboard Tester

Use this mechanical keyboard tester to check every switch after a build, repair, cleaning, or keycap swap.

The report is generated locally and can be used as a build or repair checklist.

Start testingSwitch and chatter inspection
Switch and chatter inspection

Run the Mechanical Keyboard Tester

2. Start testing

Click here to start testing.
All processing is local
Highlights switch status and possible chatterWorks well for custom builds and used boardsExport a build inspection report

Inspection flow

Inspection flow

1. Full key pass

0/87

Press every key in the selected layout until the progress reaches 100%.

2. Ghosting combos

0/4

Hold each listed combo and confirm all keys appear together.

3. Chatter 10-tap check

0/10

Tap 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
87Untested 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: 2026-05-15T07:32:42.423Z
Selected layout: Windows TKL
Browser / OS: Unknown browser on Win32
Tested keys: 0/87
Untested keys: 87
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, Tab, Q, W, E, R, T, Y, and 47 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: 87 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

Mechanical keyboard switch tester

Press each switch after assembly, cleaning, or repair to confirm the browser sees a clean press and release.

Check for switch chatter

Use the chatter panel to spot keys that may trigger repeated inputs under normal tapping pressure.

Test after replacing switches

After hot-swap or soldered switch replacement, run a full pass and export the report before closing the build.

Test compact mechanical keyboards

Choose a compact layout such as 60 percent or 75 percent when testing smaller custom keyboards.

Export a build inspection report

Save a TXT or JSON report listing tested keys, missing keys, and possible switch issues.

Help

Can I use this after a keyboard build?

Yes. It is useful for checking switch response, missing keys, chatter flags, and reportable build issues.

Does it test switch feel or sound?

No. It tests browser-detected input events, not switch acoustics, force curves, or tactile feel.

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