InviteKit Calendar Files

An .ics file generator and add-to-calendar link maker for anyone sending an event: webinars, classes, parties, launches, deadlines, and course schedules.

Describe the event in plain words and InviteKit builds a calendar invite that imports cleanly into Apple Calendar, Google Calendar, Outlook and other calendar apps, plus ready-to-share add to calendar links for Google Calendar, Outlook.com, Office 365 and Yahoo Calendar. Paste the links into an email, a newsletter, an event page or a chat; attach the .ics file to an invitation.

Time zones are handled properly. Give the local time and the city (Warsaw, Chicago, Sydney) or zone name, and the file carries a full time zone definition, so attendees in other countries see the right local time, including the weeks when daylight saving time starts or ends. Times that are skipped or repeated when clocks change are explained. Optionally list your attendees' cities to see their local times next to yours.

Recurring meeting invites: daily, weekly on chosen weekdays (every Tuesday and Thursday), every other week, monthly by date or by weekday (the second Tuesday, the last Friday, the last working day of the month), and yearly (the fourth Thursday of November). End after a number of times or on a date, and skip holidays or cancelled dates. The card lists the next dates of the series and the last one.

Create an ics file with multiple events: give a list of session dates (a course, training plan, match fixtures, conference agenda) and get one file that adds every session at once.

Also included: all-day and multi-day events, events that end after midnight, location, details, a meeting or event link, organizer name, and up to three reminders.

Every file follows the iCalendar standard (RFC 5545): correct line folding and escaping for commas, semicolons and accented or non-Latin text, stable event IDs, and standard recurrence rules (RRULE) that calendar apps expand the same way.

Limitations: InviteKit makes files and links only. It does not email invitations, add attendees, track replies, or read or change your calendar. The Outlook.com, Office 365 and Yahoo links add the first date of a repeating event; the .ics file and the Google Calendar link add the whole series. Reminders are kept in the .ics file; web links use each calendar's default reminders.