Convert OBJ to GLB - Free Online Converter
Drop a .obj file below and download it as .glb in seconds. The conversion runs entirely in your browser - no upload, no signup, no watermark. The output is a single self-contained GLB that loads in every modern viewer and engine.
Updated July 2026
Done in seconds
Your OBJ converts to GLB locally in your browser - no upload queue, no waiting.
Private by design
Your file never leaves your device. Nothing is uploaded, nothing is stored.
Free, no strings
No signup, no watermark, no file limit - convert as many files as you need.
How to convert obj to glb
Drop your OBJ file
Drag the .obj file into the converter above or click to browse. No account and no upload - the file stays on your device.
Conversion runs in your browser
The model is parsed and rewritten locally, in seconds for typical files. Geometry is carried over 1:1 - no remeshing, no quality loss.
Download the GLB
The .glb download starts from the same spot. Convert as many files as you like - there is no limit or watermark.
OBJ and GLB, explained
What is OBJ?
OBJ is the plain-text workhorse of 3D interchange. It stores vertices, faces, UV coordinates, and normals in a human-readable file, with materials referenced from a companion .mtl file. Practically every 3D application of the last 30 years can read it.
Because OBJ splits materials and textures into separate files, a bare .obj carries geometry and UVs but shows up untextured unless the .mtl and texture images travel with it. It has no units, no rigging, and no animation - which keeps it simple and universally compatible.
- Developed by
- Wavefront Technologies (circa 1990)
- Structure
- Plain-text geometry, with materials in a separate .mtl file
- Used by
- Blender, Maya, 3ds Max, ZBrush, game engines, 3D scanners
What is GLB?
GLB is the binary form of glTF, often called "the JPEG of 3D". One file packs the full scene: meshes, PBR materials, embedded textures, animations, and a real unit scale (meters). It is the standard for 3D on the web and the default output of most AI 3D generators.
Because everything is embedded in a single binary file, GLB transfers cleanly between tools with nothing lost in transit. glTF/GLB is an open Khronos standard, loads fast, and is supported by every modern engine, DCC tool, and web viewer.
- Developed by
- Khronos Group (2015)
- Structure
- Single binary file: JSON scene + buffers + textures
- Used by
- Web viewers, Three.js, Unity, Unreal, AR apps, e-commerce platforms
What survives the obj to glb conversion
Format conversion is honest work: some data has nowhere to go in the target format. Here is exactly what carries over.
Mesh geometry
All groups and faces are carried over exactly; polygons triangulate the standard way.
UV coordinates & normals
UVs survive into the GLB, so texturing the result (by hand or with AI) maps correctly.
Materials & textures (.mtl)
OBJ keeps materials in a separate .mtl plus image files - not part of the single file you drop, so the GLB arrives with a neutral material.
Object structure
OBJ groups become GLB meshes; the assembled layout is preserved.
Vertex colors
Standard OBJ has no vertex colors, so there is nothing to carry.
When should you convert OBJ to GLB?
Convert to GLB when a classic mesh should meet the modern stack: web product viewers, AR previews, game engines, or AI texturing tools that expect glTF input. One file, no sidecars to lose.
Keep the OBJ for legacy and specialist tools (sculpting, CAD, renderers, scripts) - its plain-text universality is still unmatched there.
And if what you actually need is a new model rather than a new file format: 3D AI Studio's main tool can generate 3D models from photos with AI - with exports to every format on this page.
OBJ to GLB - frequently asked questions
Made with 3D AI Studio
Need new game assets, not just a format swap?
3D AI Studio creates game-ready 3D assets from images or text with AI - textured, exportable to GLB and FBX, and usable in Unity or Unreal. 100 free credits per month.