OBJ to GLB Converter — Free, Browser-Side, No Upload
OBJ → GLB
Convert OBJ files to GLB (binary glTF) format in your browser. No upload needed. Great for web 3D, AR, and game engines.
Best for
- Packaging OBJ geometry into a single GLB for web 3D viewers
- Preparing lightweight assets for Three.js, model-viewer, or AR previews
- Replacing loose OBJ files with a browser-friendly binary glTF container
- Converting private asset drafts locally before sharing them elsewhere
Before you start
- Load the matching MTL workflow when material data matters; geometry-only OBJ files cannot invent materials
- Keep texture expectations conservative and inspect the GLB in your target viewer
- Simplify very large OBJ files before conversion if browser memory is limited
- Verify orientation and scale in the app or engine that will use the GLB
Known Limitations
- OBJ materials (MTL) are not preserved — if no MTL file is present, the UI will show a notice that materials are not retained
- Geometry only when MTL is absent; textures and material colors will be lost
Helpful guides
Frequently Asked Questions
Will my OBJ materials and textures be included in the GLB file?
Only if an MTL file is loaded alongside the OBJ. Without an MTL, the GLB output contains geometry only — material colors and texture references are not available to export.
Why convert OBJ to GLB instead of keeping OBJ?
GLB is a compact binary format that bundles geometry and materials into a single file. It is the standard format for web 3D (model-viewer, Three.js), AR (iOS AR Quick Look, Android Scene Viewer), and many game engines.
Does converting OBJ to GLB change the scale or coordinates?
The converter preserves raw vertex coordinates. OBJ and glTF both use a right-hand coordinate system by default, so scale and orientation should be consistent.
Is there a file size limit?
No server-side limit — all processing runs in your browser. Very large OBJ files may be slow to parse and pack depending on your device memory.
Does my file get uploaded to a server?
No. The entire conversion runs inside your browser using Three.js. Your file never leaves your device.
Related tools
How it works
Your files are processed entirely inside your browser using Three.js. Your files never leave your browser — there is no server upload, no cloud storage, and no third-party processing. The converted file is generated as a local Blob and downloaded directly to your device. Once the conversion is complete, all data is released from memory.