Convert OBJ to GLTF
Convert OBJ to GLTF free in your browser. No upload, no signup, no watermark. Files stay on your device.
drop a .obj file
or click to browse
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more obj & gltf
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how to convert obj to gltf
Drop your OBJ file
Drag your OBJ file into the drop zone above, or click the box to pick a file from your computer or phone. The browser reads the file directly — nothing uploads.
Click Convert
The page runs three.js on your device to decode the Wavefront OBJ and encode it as GL Transmission Format. Most conversions finish in a few seconds; large or codec-heavy files (RAW, video) can take longer.
Download the GLTF file
When the conversion finishes, the GLTF file is ready to download. Save it anywhere on your device.
FAQ
common questions
Why convert OBJ to glTF?
glTF is the modern web / runtime standard — designed for efficient loading in browsers, game engines, and AR/VR. OBJ is older and not optimised for runtime use. If you have legacy OBJ models you want to display on the web or load into a modern 3D engine, converting to glTF unlocks better performance and broader support.
Will materials and textures come through?
Yes. OBJ materials (defined in the MTL sidecar) map to glTF PBR materials — diffuse colour, specular, roughness all translate to their PBR equivalents. Textures bundle into the GLB (or stay external for .gltf). The mapping isn't always 1:1 because OBJ's material model is simpler than PBR, but the visual result is typically faithful.
Will I gain animations or rigging from the conversion?
No — you can't add what wasn't there. OBJ is a static-mesh format; the glTF output preserves the same static geometry without inventing animations. If you need an animated model, the source data has to come from a format that supports animation (FBX, glTF itself, BVH for skeletal data).
Should I output .gltf or .glb?
GLB if you're shipping the model anywhere — it bundles everything (geometry + materials + textures) into one file. .gltf is JSON with separate binary and texture files, useful if you need to inspect / edit the JSON or hand-edit the materials post-conversion.
Will the file be smaller than the OBJ + MTL + texture files combined?
Usually yes for .glb. OBJ is text-based and verbose; .glb uses efficient binary encoding. Total size including textures often drops 30–50% in the conversion. For .gltf with external files, the sizes are roughly similar to the source OBJ collection.