An OBJ file is a standard 3D model format that is used in computer graphics and 3D modeling applications. It is a simple and widely supported file format that is used to store 3D geometry data, texture information, and other attributes related to a 3D model. OBJ files can be created and edited using a variety of software tools, and they are commonly used for exchanging 3D models between different applications. The OBJ file format is popular due to its simplicity and compatibility with many 3D modeling and rendering programs. OBJ files can store both geometry and texture data, making them suitable for representing complex 3D shapes and models. If you work with 3D modeling or computer graphics, understanding the OBJ file format is essential for exchanging and working with 3D models across different software platforms.