ICS Validator
Validate an iCalendar (.ics) file and get a clear list of issues that commonly break
imports or cause events to show at the wrong time.
What this ICS validator checks
-
Required structure and fields (
VCALENDAR/VEVENT,DTSTART,UID,VERSION) -
Timezone correctness (
TZID, missing/brokenVTIMEZONE, DST drift) - Formatting that breaks imports (line folding, encoding, invalid characters)
Fastest path
Upload your file to /fix, review the first error, and download a repaired file when fixes
are available.