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

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.

A PRT format is used to store components of 3D CAD models. It may contain lines, surfaces, textures, dimensions, and metadata.

The .prt extension is mostly associated with the Siemens NX Part (PRT) file type as an acronym for "part". PRT files may be exported to various standard CAD and 3D modeling formats (e.g. OBJ and STL) in addition to being utilized natively in Siemens NX.

The PRT file is also a part created by PTC Creo Parametric 3D software. In PTC Creo, project part files can be combined in a single assembly file with an ASM extension.

Despite the same extension name different CAD software produce PRT files differently, i.e. PRT files produced with Creo are not the same as PRT files generated from NX.

The PRT extension is also compatible with Dassault Systèmes SOLIDWORKS.