IFC Format Transcoding

Convert an IFC model between its on-disk encodings without losing data, and pick the right encoding for an exchange. The governing fact : IFC is one EXPRESS schema with several derived encodings. Transcoding re-renders the SAME model population in a different encoding. It NEVER changes the schema version and NEVER changes the geometry.

This skill is encoding-level. For a schema-version change (IFC2x3 to IFC4) see ifc-impl-version-migration ; that is migration, not transcoding. For the encoding syntax itself see ifc-syntax-step-physical-file, ifc-syntax-ifcxml, ifc-syntax-ifcjson.

Quick Reference

The four encodings