Chronos Timer

Manage multiple countdown timers and groups. Launch, track, and export with a premium dark/light UI.

Chronos Timer is a powerful, elegant multi-timer extension for Chrome that lets you create, manage, and group countdown timers without ever leaving your browser. ➤ ✨ Key Features ✓ Multiple Timers, Zero Friction Create as many countdown timers as you need. Each timer runs independently — start, pause, and reset with a single click. ✓ Timer Groups Organize related timers into named groups (e.g., "Pomodoro Cycle", "Morning Routine", "Meeting Buffer"). Launch all timers in a group simultaneously or with staggered starts. ✓ Staggered Group Launch Configure offset delays when launching a group so timers start sequentially instead of all at once — perfect for structured workflows. ✓ Side Panel Support Keep timers visible while you browse. Open Chronos Timer in Chrome's native side panel so it stays docked alongside your web content. ✓ JSON Backup & Restore Export all your timers and groups as a JSON file for backup or transfer. Import from any previously exported file to restore your setup instantly. ✓ Premium UI — Dark & Light Mode Toggle between a sleek dark theme with glassmorphism effects and a clean light mode. Smooth animations and modern typography (Outfit + Inter) make every interaction feel polished. ✓ Persistent Timer State Timer state survives popup close and browser navigation — your timers keep ticking in the background thanks to `chrome.alarms`. ✓ Desktop Notifications Get notified the moment a timer finishes, even when you're focused on another tab. ✓ 🎯 Perfect For - Pomodoro / deep work sessions - Meeting time management - Cooking and exercise routines - Any activity that benefits from structured time blocks ✓ 🔒 Privacy First Chronos Timer stores all data locally on your device using `chrome.storage.local`. No data is ever sent to any external server. No analytics. No tracking. See our full privacy policy for details.