The OBJ file format is a simple data format that represents 3D geometry alone - namely, the position of each vertex, the UV position of each texture coordinate vertex, vertex normals, and the faces that make each polygon defined as a list of vertices, and texture vertices. The file format is open and has been adopted by other 3D graphics application vendors. obj) is a geometry definition file format first developed by Wavefront Technologies for its Advanced Visualizer animation package. Blender uses this format to save nearly everything, including objects, scenes, textures, lightning data, vertexes, sounds, and user interface settings.
The BLEND file is the major file format used by the program. Blender is a free and open-source 3D graphics software toolset used for creating animated films, visual effects, art, 3D printed models, motion graphics, interactive 3D applications, and computer games.
