Calendar & Subtitles

Calendar and subtitle tools convert, check and repair two common timed-text formats: iCalendar (.ics) files and subtitle files. For calendars, the CSV to ICS converter turns spreadsheet rows into events, ICS to CSV exports a calendar for review, the ICS validator checks structure and event fields, the ICS merger combines several exports, and the RRULE generator builds a recurrence rule with a preview of dates.

For subtitles, the SRT to VTT converter and VTT to SRT handle web captions, while ASS, SBV and TTML converters turn other formats into SRT. The SRT time shift tool fixes timing and frame-rate drift, subtitle repair normalizes broken timestamps, the SRT merger joins parts or languages, SRT to TXT extracts dialogue, and SRT to FCPXML creates Final Cut titles.

Files are processed in your browser. Each tool lists its supported subset, so keep the original file and test the output in the app you plan to use.