An OBJ file is a standard 3D model format used in computer graphics. It stores information about the geometry, textures, and materials of a 3D model. OBJ files are widely supported in 3D modeling and animation software, making them a popular choice for sharing and transferring 3D models across different applications. The file format is simple and human-readable, making it easy to work with and understand. OBJ files can contain data such as vertices, faces, normals, textures, and material properties, allowing for complex and detailed 3D models to be accurately represented. Whether you're a graphic designer, game developer, or 3D artist, understanding the OBJ file format is essential for working with 3D models in your projects.