LWO to glTF Converter
Processing entirely on your device — large files may take a moment.
LWO is LightWave 3D's object format — an IFF-style container with layers, surfaces and VMAPs that broadcast and film VFX shops have used since the 1990s. Convert .gltf to GLB when you need one portable file, or to OBJ/STL for tools and 3D printers that expect those.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How LWO compares to glTF
| LWO | glTF | |
|---|---|---|
| Structure | IFF FORM chunks (LWO2) | JSON scene + external buffer |
| Compatibility | LightWave, three.js, Blender (io) | All glTF loaders |
| Best for | Broadcast VFX asset migration | Editing and debugging assets |
How to convert LWO to glTF
- 1
Select your files
Drag & drop your LWO files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to glTF". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted glTF file individually, or grab everything at once as a ZIP archive.
About the LWO format
LWO is LightWave's object format — an IFF-style container of layers, point/ polygon lists, surface definitions and VMAP weight/UV maps. NewTek's LightWave rendered Babylon 5 and dozens of TV shows, and broadcast VFX houses still hold decades of LWO assets.
three.js includes an LWOLoader, so objects convert to glTF/OBJ in the browser — layers merge into a scene graph with surfaces translated to PBR-ish materials.
+ Strengths
- ✓Layered, surface-rich container
- ✓Broadcast/VFX heritage
- ✓Native three.js loader
! Limitations
- −Version spread (LWO2 vs LWOB)
- −Envelope/animation data not portable
- −Niche outside LightWave studios
About the glTF format
glTF in its JSON form (.gltf) is the readable side of the glTF 2.0 family: scene graph, meshes, materials, cameras and animations described in JSON, with binary geometry in a separate .bin buffer and textures as their own image files. Seeing the structure as text is genuinely useful when you are debugging an asset pipeline or hand-editing a material.
The trade-off is portability: a .gltf is only self-contained when its buffers are embedded as data URIs, which bloats the file. Everywhere you just want to ship or drop a model into a viewer, GLB is the better answer — and that is exactly what the gltf-to-glb page does for you, in your browser, without uploading the model.
+ Strengths
- ✓Human-readable JSON structure
- ✓Same PBR materials and scene data as GLB
- ✓Easy to diff, debug and hand-edit
! Limitations
- −Usually needs separate .bin and texture files
- −Breaks when files are moved apart
- −Larger than GLB once buffers are embedded
Why convert LWO to glTF?
Converting makes sense where the strengths of glTF meet what LWO cannot give you. Human-readable JSON structure Meanwhile Version spread (LWO2 vs LWOB) One pass through the converter above puts your file on the right side of that trade-off.
Frequently asked questions
Is this LWO to glTF converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Will my model look the same as a GLB?
Geometry, hierarchy and standard materials convert faithfully. Note that Draco-compressed GLB files and exotic extensions are not supported — export those as plain GLB from your original tool first.
Will my glTF model keep its colors and textures?
Only if glTF can store them. Geometry converts faithfully; appearance data survives only when the target format has a place to put it. For full materials, GLB is usually the right target.
Does the scale or orientation of the model change?
Vertex data is converted as-is. Formats without a unit system (like STL) are interpreted as millimeters by most 3D-printing tools — scale before converting if your model uses different units.