One-Touch Calendar

One-Touch Calendar is a Chrome extension that lets you add events to Google Calendar in just a few seconds from the toolbar icon, without opening the Google Calendar page. Minimal functionality — it just adds events, nothing else. ■ Who it's for - People who find it tedious to open the calendar, click a date, and go through the whole process - People who want to quickly add an event while browsing - People who want to complete event registration using only the keyboard ■ Main features ▼ Choose from 3 input methods - Standard mode: intuitive input via date/time pickers - Text input (by field): quickly enter the title, date, and time as text - Text input (all-in-one): enter everything on one line, e.g. "Shopping 7/9 2000 2100" ▼ Smart time completion - Enter only a start time, and the end time is automatically calculated based on a default duration you set (15–120 minutes) - If no time is entered, the event is registered as an all-day event ▼ Undo function - Instantly delete an event right after adding it with the "Undo" button - The time window during which the popup stays open for undoing (3–10 seconds, or never auto-closing) is configurable ▼ Usability - Dark mode support - Switch between Japanese/English display (can also follow your browser settings automatically) - Reset your Google account connection with one click ■ Privacy This extension requests only the minimum necessary permissions. - Only permission to add/delete events on Google Calendar (the calendar.events scope). It does not view your events or access any other information. - No personal information collected is sent to external servers. All communication goes directly from your browser to Google's official API.