Universal mesh
Almost every 3D and rendering tool can read and write OBJ.
Format Guide中文
What is OBJ?
OBJ is a simple, widely supported 3D mesh format originally from Wavefront. It stores geometry, UVs and normals, and pairs with an MTL file for basic materials, making it a dependable interchange format across nearly every 3D tool.
Published Jun 10, 2026Updated Jun 10, 2026
MTL materials
OBJ references an .mtl file plus textures for basic material definitions.
Simple & stable
OBJ is plain-text and easy to parse, but lacks animation and PBR.
Where OBJ fits
OBJ is excellent for static geometry exchange between rendering and DCC tools.
It does not carry animation, scene graphs or modern PBR materials, so it is less suited to real-time web delivery.
Converting OBJ
For the web and AR, convert OBJ to glTF / GLB to gain PBR materials and compact packaging.
You can also convert STL to OBJ to add UVs and materials to a bare print mesh.