Digital Clock Online turns your browser into a beautiful, customizable clock. Enjoy fullscreen digital and flip clocks, light and dark themes, world time zones, alarms, timers, a stopwatch, and Pomodoro sessions. Choose 12/24-hour formats, show or hide seconds, and personalize your display. Install the free extension for Chrome, Edge, or Firefox to bring a clean, distraction-free clock to every new tab. No signup required.