Last reviewed Mar 27, 2026

Export an .ics backup before big imports or any change where you want your own restore point.

The easiest backup: export an .ics file

The most portable backup format is iCalendar (.ics).

See: Export calendars as ICS

What gets exported?
ICS export includes the standard calendar event fields (like titles, times, locations, notes, recurrence, and reminders). Some app-specific settings (like theme and view preferences) are not part of the iCalendar format.
Keep backups private
ICS backups are plain text. They are portable, but they are not protected by NimbleCal's end-to-end encryption once they are downloaded or copied somewhere else.

When you should export a backup

Export first if you're about to:

  • Clear browser storage / site data
  • Move to a new computer or browser profile
  • Do a big import (so you have a rollback point)
  • Make lots of edits you can't easily undo

Restoring from a backup

To restore, import the .ics file back into NimbleCal:

Heads up: imports can create duplicates
If you import the same backup more than once, you'll likely see duplicate events. If you're unsure, import into a new calendar first so it's easy to clean up.