Diagnostic Terminal
Diagnostic Tools Index
Select a tool to analyze calendar data.
RFC 5545 ICS Validator
Paste raw ICS data to check for structural compliance.
Unix Epoch to Local Timezone Converter
Convert Unix timestamps into localized VTIMEZONE strings.
RRULE Generator & Parser
Build and validate complex Recurrence Rules.
RFC 4122 UUID Generator
Generate universally unique identifiers for events.
VTIMEZONE Block Builder
Construct valid IANA timezone definitions for iCalendar.
Absolute Time Difference Calculator
Calculate exact time between two offsets.
VALARM Syntax Generator
Generate valid reminder definitions.
CalDAV REPORT Request Builder
Build XML payloads for CalDAV sync requests.
Base64 Attachment Decoder
Decode inline ATTACH elements.
RFC 5545 DURATION Parser
Parse iCalendar duration strings (e.g. PT1H30M).