OBJ

OBJ is an open 3D geometry format introduced by Wavefront in the 1980s. It records vertices, normals, UVs, and face connectivity in human-readable text and is supported by nearly all 3D software, making it a safe option for cross-software mesh exchange. Its materials and textures are typically defined in a companion .mtl file, and both must be placed in the same directory.

OBJ does not include animation or skeletal data; it only represents static meshes, so it is not suitable as a final format for character animation workflows. Additionally, the text encoding results in large file sizes for complex models, leading to slower loading. If you need a single-file delivery with embedded textures, GLB is a better choice.