Convert OBJ to GLB
Free · no signup · no watermark · runs in your browser · batch up to 20 files, download as ZIP
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GLB packs an OBJ, its .mtl materials and its texture images into one binary file that every web 3D viewer and game engine loads. Drop the .obj together with the .mtl and textures (or a ZIP of the folder) and the converter matches them by file name, shows the textured model, and warns you about any texture the OBJ references but you did not include.
This conversion runs entirely in your browser. The file is never uploaded, which makes it instant, private and usable on work files you would not want to send to a stranger's server.
It also works as a bulk OBJ to GLB converter: drop up to 20 OBJ files at once, they are converted one after another in your browser, and you can download each file on its own or all of them together in a single ZIP. A file that fails is listed with the reason and does not stop the rest of the batch.
How to convert OBJ to GLB
- Drop your OBJ files onto the box above, or click it to choose from your computer. Up to 20 at once.
- Check the 3D preview and model info. If the model is the wrong size or lying on its back, open the options to set the source units or rotate Z-up to Y-up, then press Convert.
- Download each converted file from the list, or press "Download all (.zip)" to get the whole batch in one ZIP file.
What changes when you convert OBJ to GLB
GLB can hold everything OBJ can and more: meshes, PBR materials, textures. Drop the .mtl and texture images together with the .obj (or zip them) so the materials come across.
OBJ has no units, so choose what its numbers mean (the default is metres). GLB is always in metres, so the size is converted.
OBJ and GLB compared
| OBJ | GLB | |
|---|---|---|
| Full name | Wavefront OBJ | glTF Binary |
| Extension | .obj | .glb |
| MIME type | model/obj | model/gltf-binary |
OBJ: Plain-text geometry with UVs and normals, read by nearly every 3D program. Materials live in a separate .mtl file and textures beside it; there is no animation and no unit.
GLB: The single-file binary form of glTF, the Khronos standard for 3D on the web, in game engines and in Android AR. Holds meshes, PBR materials, textures, skins and animation, in metres, Y-up.
Frequently asked questions
How do I convert OBJ to GLB?
Drop your .obj file onto the box on this page and the .glb file is ready to download in a second or two. There is no signup, no email, no watermark and no file limit beyond what your browser can hold in memory.
Is this OBJ to GLB converter free?
Yes, completely, with no account, no trial and no watermark on the output. There is nothing to buy on this page: choose a file, convert it and download the result.
Are my files uploaded anywhere?
No. This conversion runs entirely in your browser using JavaScript, so the file never leaves your computer. You can disconnect from the network after the page loads and it will still work.
Will converting to GLB reduce the quality?
GLB can hold everything OBJ can and more: meshes, PBR materials, textures. Drop the .mtl and texture images together with the .obj (or zip them) so the materials come across.
Can I convert multiple OBJ files to GLB at once?
Yes, up to 20 files in one go. Drop or select them all together and they are converted one after another. Each file appears in the results list with its own download button, and "Download all (.zip)" saves the whole batch as a single ZIP. If one file cannot be converted, it is listed with the reason and the others still finish. For more than 20, run a second batch.
Found a problem, or something that could be better? We read every message and we fix things quickly.
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