Conversion from FreeCAD to SOLIDWORKS Composer is not supported yet :(

FreeCAD is a customizable, open-source paramentic 3D CAD and BIM software with FEM support, built on the Opencascade geometric kernel. It was created primarily for product design and mechanical engineering, but it can be used in a wide range of industries, such as electrical engineering, or architecture. It runs on Windows, Mac OS, and Linux.

FreeCAD is made to craft real-life objects of different sizes and is perfect for a home user/amateur, programmer, experienced CAD software user, or educator. This software provides tools similar to those of SolidWorks, Catia or Autodesk Revit.

SOLIDWORKS Composer is a SOLIDWORKS tool to create high-quality graphical assets from the 3D CAD designs for technical and marketing documentation.

It is used to make manufacturing assembly instructions, product manuals, installation instructions, service manuals, training guides, marketing brochures, and sales bidding kits. The available graphics vary from 2D content to interactive animations.

According to the package, SOLIDWORKS Composer allows users to interact with a model, use custom APIs to customize the player, launch CAD files batch conversion, support PMI data, and identify design errors.