Week Number by ANFC LLC

Shows the current week number on the toolbar and a popup with past/future week numbers. ISO or US rules.

Week Number (Badge + Weeks Popup) by ANFC LLC helps you stay organized by putting the current week number right where you need it—on your Chrome toolbar. The toolbar badge always shows today’s week number. With a single click, the popup opens to display past and upcoming weeks, complete with start and end dates. Whether you follow ISO weeks (Mon–Sun) or US weeks (Sun–Sat), the extension has you covered. Features 📅 Week number in the toolbar — always visible at a glance. 🔍 Popup list — see −10 to +10 weeks around today, with start and end dates. ⚙️ Customizable — switch between ISO (Mon–Sun, week 1 = first week with a Thursday) and US (Sun–Sat, week 1 contains January 1). 💾 Automatic sync — your chosen mode is saved to Chrome sync storage. 🔒 Privacy-first — no data collection, no analytics, no external connections. Permissions storage: used only to save your ISO/US preference. alarms: used to refresh the toolbar badge once per minute. Why use Week Number? Perfect for professionals, students, and project managers who work with week-based planning systems. Stay aligned with schedules, deadlines, or international colleagues who rely on ISO weeks.