Timerjar is a free set of clocks for a browser tab: countdowns from one second to twelve hours, a stopwatch, a Pomodoro cycle, a countdown to a clock time, and an interval timer. It was built for classrooms, kitchens, and workouts, which are places where the timer needs to be readable from across the room and done when it says it is done.
The pages are ordinary HTML. The interactive clock starts when you press the button. Nothing about your timer is sent to a server. Theme, sound, and volume stay in local storage on your device. The alarm is synthesized in the browser.
Timerjar is independent. The durations are the ones people actually search for, and each duration has its own page so a five minute timer and a twenty-five minute timer are not the same heading with a different number dropped in. If a page is wrong or thin, the contact page is the way to say so.
Questions
Who runs Timerjar?
Timerjar is an independent site. The contact page is the way to reach the person who publishes it.
Do I need an account?
No. The tools run in the browser you already have open.