Clock Tab

Clock Tab: a big fullscreen clock on every new tab, with seconds, a countdown timer, stopwatch and world clocks. No ads.

Clock Tab is a free Chrome extension that replaces your new tab page with a big, beautiful clock. Every new tab becomes a clock tab with seconds, plus a countdown timer, a stopwatch and world clocks one key away. No account, no ads, nothing to set up. WHAT YOU GET 🕒 Big clock: digital or analog, in Minimal, Bold or Mono style. Show seconds and the date, pick 12- or 24-hour time, size and accent color. 🖥️ Fullscreen clock: press F and the tab clock fills the whole screen. It works as a desktop clock on a second monitor, in a presentation or in a meeting. ⏳ Tab timer: type the time like on a microwave (130 means 1:30) or pick a preset from 1 to 60 minutes. A soft chime rings when time is up, and the tab title counts down while you work in other tabs. ⏱️ Stopwatch with laps: your fastest lap is green, your slowest is red. 🌍 World clocks: add up to 6 cities and see their time and the difference from yours next to the main clock. 🖼️ New tab wallpaper: set your own photo, or pick a gradient or a solid color. Your images stay on your device. 🔗 Most visited sites under the clock, one click away. 🧘 Zen mode: when the mouse rests, extras fade one by one and only the clock remains. Move the mouse and everything comes back. 🌗 Light and dark themes that follow your system. MADE FOR ✅ Deep work and study: start a 25-minute pomodoro focus session right in your new tab. ✅ Remote teams: keep your colleagues' cities on screen and stop doing time zone math. ✅ Presentations and meetings: a fullscreen clock with seconds keeps everyone on time. ✅ A calm desk: a clean, minimal new tab page instead of clutter. HOTKEYS F fullscreen, T theme, comma settings, 1 clock, 2 timer, 3 stopwatch, Space start or pause, R reset, L lap. They work in any keyboard layout. PRIVATE AND FAST No ads, no trackers, no account. Your settings and images stay in your browser. Clock Tab opens instantly, even offline. FAQ Can I show seconds? Yes, turn on "Show seconds" in settings. Does the timer ring if I switch tabs? Yes, as long as the timer tab stays open: the chime plays and the tab title says when time is up. How do I add a city? Open settings, go to World clocks and type a city name, e.g. Tokyo. Can I use my own photos? Yes, upload them in Background. They never leave your device. New in 2.1: timer, stopwatch, world clocks and zen mode. If Clock Tab makes your day a little calmer, please leave a review. It helps a lot.