Add your OBJ file
Drop one or more .obj files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
OBJ to GLB
Converting a .obj mesh to .glb rewrites the same triangles for a different toolchain. Free, private, and validated — the file never leaves your browser.
100% private for supported formats
Runs on your deviceConvert supported files
Drop OBJ files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting Wavefront OBJ model to glTF binary mesh
Converting a .obj mesh to .glb rewrites the same triangles for a different toolchain. The .obj extension marks a Wavefront OBJ model, a plain-text 3D format that lists vertex positions, texture coordinates, normals, and the faces connecting them. It comes from the film-graphics world rather than engineering, which shows in its focus on appearance: materials and textures live in a companion .mtl file.
A .glb file is the binary packaging of glTF 2.0: JSON scene description, mesh buffers, and optional textures packed into one little-endian container with a fixed header and typed chunks. It is the usual way to ship a self-contained realtime 3D asset without sidecar .bin files. For this route the practical draw is single-file, widely supported realtime mesh container and efficient binary buffers with predictable alignment — balanced against scene graph, materials, and animations are richer than many converters preserve, which is worth knowing before you commit a large batch.
Why convert OBJ to GLB?
The practical trigger for this conversion is usually a mismatch: with .obj, dependence on external .mtl and texture files means models routinely arrive gray and broken. Switching to .glb buys you single-file, widely supported realtime mesh container, which is why it is the better fit for publishing web and AR models that must load from one file. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
OBJ vs GLB at a glance
| Aspect | Wavefront OBJ model (.obj) | glTF binary mesh (.glb) |
|---|---|---|
| Format type | Vector — resolution-independent geometry instead of pixels | Vector — resolution-independent geometry instead of pixels |
| How it stores data | line-oriented text: v for vertices, vt for texture coordinates, vn for normals, f for faces indexing into those lists | begins with a 12-byte header (magic glTF, version 2, total length) followed by a JSON chunk and usually one BIN chunk |
| Strongest at | exchanging textured models between tools like Blender, Maya, and ZBrush | publishing web and AR models that must load from one file |
| Weak spot | dependence on external .mtl and texture files means models routinely arrive gray and broken | scene graph, materials, and animations are richer than many converters preserve |
| Metadata | none is defined; comment lines beginning with # are the only place to stash information, and no tool reads them systematically | asset generator and copyright fields live in the JSON asset object; richer metadata usually rides in extras or vendor extensions |
Pick GLB as the output
Select .glb in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if GLB is selectable, the route is real and validated.
Convert on your device
Press Convert. The mesh is parsed, retriangulated where needed, and rewritten locally with full validation.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid GLB file. Outputs keep the original filename with the .glb extension.
OBJ to GLB questions, answered
Will converting OBJ to GLB lose quality?
Since obj is vector-oriented and glb is vector-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .glb itself requires.
Is it private to convert OBJ files here?
Yes — the .obj file is processed inside your browser tab and never uploaded. The mesh is parsed, retriangulated where needed, and rewritten locally with full validation. Close the tab and the file is gone from memory.
Where will the GLB file work?
Windows 3D Viewer, Blender, glTF Sample Viewer, three.js, Babylon.js, Unity, Unreal, and most modern DCC tools import .glb. Mobile AR frameworks and web engines treat it as a first-class mesh package.
Will the GLB file be bigger or smaller than my OBJ?
It depends on the content: begins with a 12-byte header (magic glTF, version 2, total length) followed by a JSON chunk and usually one BIN chunk. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my OBJ file?
In .obj, none is defined; comment lines beginning with # are the only place to stash information, and no tool reads them systematically. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.
Can I convert GLB back to OBJ?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .obj → .glb → .obj is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.