offlinewebtools.com browser-local workbench
Keyboard Latency Tester
Measure browser-visible keydown, keyup, hold, repeat, and rhythm timing locally without storing typed text.
Shipped
Browser local
Recent key codes
Key codes only; typed characters are not stored.
No keydown events yet.
Timing summary
- Presses
- 0 presses · 0 repeats
- Average hold
- 0.0 ms
- Average rhythm
- 0.0 ms
- Rhythm jitter
- 0.0 ms
Currently held: none.
What this tool does
Keyboard Latency Tester helps you measure browser-visible keydown, keyup, hold, repeat, and rhythm timing locally without storing typed text.
What you get
Keyboard Latency Tester produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.
Report a bug
If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.