glTF to OBJ Converter
Processing entirely on your device — large files may take a moment.
glTF JSON Model and Wavefront OBJ Model exist for different jobs: glTF (JSON form) is the human-readable sibling of GLB: the same scene, meshes and PBR materials, but stored as JSON with separate binary and texture files. OBJ opens in Blender, Maya, 3ds Max, SketchUp and countless model viewers — the safest interchange format for meshes.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How glTF compares to OBJ
| glTF | OBJ | |
|---|---|---|
| Structure | JSON scene + external buffer | Mesh + UVs (+ groups) |
| Materials | PBR, textures as separate files | Via separate MTL file |
| Compatibility | All glTF loaders | Universal exchange veteran |
| Best for | Editing and debugging assets | Static model exchange |
How to convert glTF to OBJ
- 1
Select your files
Drag & drop your glTF files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to OBJ". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted OBJ file individually, or grab everything at once as a ZIP archive.
About the glTF format
glTF in its JSON form (.gltf) is the readable side of the glTF 2.0 family: scene graph, meshes, materials, cameras and animations described in JSON, with binary geometry in a separate .bin buffer and textures as their own image files. Seeing the structure as text is genuinely useful when you are debugging an asset pipeline or hand-editing a material.
The trade-off is portability: a .gltf is only self-contained when its buffers are embedded as data URIs, which bloats the file. Everywhere you just want to ship or drop a model into a viewer, GLB is the better answer — and that is exactly what the gltf-to-glb page does for you, in your browser, without uploading the model.
+ Strengths
- ✓Human-readable JSON structure
- ✓Same PBR materials and scene data as GLB
- ✓Easy to diff, debug and hand-edit
! Limitations
- −Usually needs separate .bin and texture files
- −Breaks when files are moved apart
- −Larger than GLB once buffers are embedded
About the OBJ format
OBJ (Wavefront, 1990s) is the veteran of 3D model exchange: a text file of vertices, UV coordinates and faces, optionally paired with an MTL material file and texture images. It predates every modern pipeline yet still opens everywhere, which keeps it as the default export of modeling tutorials, asset stores and scan software.
It is static by design — no animation, no rigging, no scene hierarchy beyond groups — and MTL's habit of referencing textures by relative path means a lonely .obj file often shows up untextured. For static meshes with appearance, it remains a dependable common ground.
+ Strengths
- ✓Opens in every 3D application, old and new
- ✓Text-readable and easy to generate programmatically
- ✓Carries UVs and materials via MTL
! Limitations
- −No animation, rigging or hierarchy
- −Texture references break when files travel alone
- −Text format is bulky for dense meshes
Why convert glTF to OBJ?
There is a concrete reason this conversion exists: Usually needs separate .bin and texture files OBJ sidesteps that — Opens in every 3D application, old and new If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this glTF to OBJ converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
What happens to colors and materials?
The OBJ format only stores geometry, so colors, textures and materials from the source file are dropped — the shape converts perfectly, appearance does not. If you need materials, convert to GLB instead.
How large can the glTF file be?
Everything runs on your device, so memory is the only ceiling. Dense meshes with millions of triangles convert fine on a desktop computer, just over a slightly longer coffee break.
Does the scale or orientation of the model change?
Vertex data is converted as-is. Formats without a unit system (like STL) are interpreted as millimeters by most 3D-printing tools — scale before converting if your model uses different units.