Refreshing the page resets the stopwatch and clears laps; progress is not saved.
Yes. No sign-up required. The stopwatch runs entirely in your browser.
Yes. Click Lap while the stopwatch is running to record each lap. Lap durations are shown in the list.
Yes. Once the page is loaded, the stopwatch runs locally with no server needed.
No. Refreshing or closing the page resets the stopwatch and clears all laps; progress is not saved.