Convert PMX to FBX for free

PMX is a model file format used in Japanese MMD (MikuMikuDance) software, the full name is Polygon Model eXtended. The PMX format has better extensibility and functionality than the original PMF (Polygon Movie Format) and PMD (Polygon Model Data) formats of MMD. The PMX format file contains all the information of the 3D model, including the model's mesh, materials, bones, weights, animation data, etc. In MMD, users can create their own 3D characters and make various animations by importing model files in PMX format. The PMX format supports more types of materials, including specular reflection, transparency, glow and other effects, as well as a variety of bone types and animation interpolation methods, which can more flexibly express various movements and postures.

The FBX format of AutoDesk was originally developed by Kaydara in the 1990s for storing 2D or 3D content with motion data. Over the years, due to its 3D animation capabilities, it has evolved into a widely used format for 3D modeling applications such as Blender, 3D Studio Max, and others.

This format is used to contain 3D models, including vertices, faces, and other 3D geometric graphics, as well as animation data. The format is proprietary, but there is a publicly available API for development purposes. The file content can be either text or binary, and the Blender Foundation has worked to document the format.