Hereās a short, informative piece on ā suitable for a blog, FAQ, or knowledge base. Converting DWF to IFC: Why and How In the world of BIM (Building Information Modeling), DWF (Design Web Format) and IFC (Industry Foundation Classes) serve very different purposes. DWF is primarily a lightweight, publishāonly format for design review and markup, while IFC is an open, dataārich standard for exchanging BIM information between different software platforms.