GLB vs OBJ
OBJ is decades old and readable almost everywhere, but it only describes static geometry with basic materials, and its textures live in separate files. GLB stores modern PBR materials, embedded textures, scene hierarchy and animation in one compact binary. For web, AR and engines, GLB is the stronger format; OBJ's advantage is that very old or very simple tools still accept it.
Side by side
| GLB | OBJ | |
|---|---|---|
| Full name | binary glTF | Wavefront OBJ |
| Created by | Khronos Group | Wavefront Technologies |
| Introduced | 2017 (glTF 2.0) | late 1980s |
| Encoding | binary, one file | plain text, with a separate .mtl file |
| File size | small; textures stored compressed | large for dense meshes, because it's text |
| Materials | Yes | Yes |
| Textures | Yes | No |
| Animation | Yes | No |
| Colour | PBR materials and embedded textures | basic materials in a separate .mtl file |
| Units | metres by convention | unitless |
| Best for | the web, Godot, three.js, Android AR and general sharing | older 3D software and CAD-adjacent tools |
Choose GLB when
- •You want materials and textures to travel in one file.
- •The model has animation or a node hierarchy.
- •It's going on the web or into a real-time engine.
Choose OBJ when
- •The target tool is old or only reads OBJ.
- •You want to read or tweak the geometry as text.
- •You only need the shape and simple colours.
Which apps open them
Of the 15 3D apps in our software guides, 9 open GLB without conversion and 14 open OBJ. Only GLB opens directly in Shopify. Only OBJ opens directly in Maya, 3ds Max, Bambu Studio, OrcaSlicer, PrusaSlicer, UltiMaker Cura.
Questions
- Is GLB better than OBJ?
- Neither is better everywhere. You want materials and textures to travel in one file: choose GLB. The target tool is old or only reads OBJ: choose OBJ.
- Can I convert GLB to OBJ?
- Yes. Our GLB to OBJ converter runs in your browser. Textures are dropped, because OBJ can't store them.
- Which file is smaller, GLB or OBJ?
- GLB: small; textures stored compressed. OBJ: large for dense meshes, because it's text. Actual size depends mostly on polygon count and texture resolution.
Written with AI assistance by the Renderlyst team in October 2026. Format support reflects each app's current release as we understand it, and we link the official documentation so you can confirm it for your version. Spotted something out of date? Email alishbakhalid766@gmail.com.