What is a .IFB file?
IFB is an iCalendar free/busy file, sharing when someone is available.
- Did you know
- Free/busy files let calendars show availability without revealing event details.
- An IFB file uses iCalendar’s VFREEBUSY component, the same RFC 5545 standard as event files but carrying only blocks of busy and free time.
- VFREEBUSY data can be a request for someone’s availability, a reply to such a request, or a simply published schedule of busy periods.
- What Analyser reads
- Open personal-information files: iCalendar .ics/.ical and .vcs (events, times, recurrence, organiser/attendees), vCard .vcf contacts (fields + inline base64 photo), LDIF directory exports and Windows .contact - with Outlook .msg/.pst, IBM Notes .nsf, Exchange .edb and Outlook Express .dbx identified. Email messages (.eml/.emlx/.mbox) now open in a full viewer - see Email above.
- Depth of analysis
- .IFB is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .IFB file
- Drag a .IFB file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.