Free online GLB to USDA converter

Source format: glb

GLB is the binary container version of glTF, a modern 3D asset format created by the Khronos Group. It is widely used for web 3D, game engines, AR/VR content, product visualization, and asset exchange because it can bundle geometry, materials, textures, animations, and scene data into a single file. Compared with separate-texture workflows, GLB is convenient for sharing and loading because everything is packaged together.

Target format: usda

USDA is the ASCII text form of Pixar’s Universal Scene Description (USD) format. It is human-readable, easier to inspect and version-control than binary USD files, and commonly used in film, VFX, animation, and increasingly in 3D pipelines that need robust scene interchange. USDA is useful when you want to edit or debug scene structure directly, or when a pipeline expects USD-based assets.

How to perform the conversion

The most reliable way to convert GLB to USDA is with a desktop 3D tool or USD-capable converter that can import glTF/GLB and export USD ASCII. A practical option is Blender with the USD export add-on, or a pipeline tool that supports both formats. If you only need a quick conversion, you can also use the built-in online converter on 101convert.com for free without installing any software.

1. Open the GLB file in a compatible application such as Blender.
2. Check that the model, materials, textures, and animations imported correctly.
3. Choose File → Export → Universal Scene Description or the equivalent USD export command.
4. Select ASCII or text output so the result is saved as .usda rather than binary .usd.
5. Adjust export options if available, such as whether to include animations, cameras, lights, or referenced assets.
6. Save the file with the .usda extension.

If you are using a command-line pipeline, the exact command depends on the tool installed. In general, the workflow is: import input.glb, export as output.usda, and ensure the exporter is set to ASCII USDA output.

Notes on quality, compatibility, and limitations

GLB and USDA are not equivalent formats, so the conversion may not be perfectly lossless. GLB content is based on glTF’s real-time rendering model, while USDA is part of the broader USD scene description ecosystem. As a result, some glTF features may be translated differently or only partially, especially materials, animation details, skinning, extensions, and embedded textures.

Because USDA is text-based, the output is easier to inspect but can be larger and slower to load than binary USD. If your goal is efficient production use rather than readability, a binary .usd file may be preferable. Also, not every converter preserves the full scene hierarchy or all glTF-specific shading behavior, so it is a good idea to verify the result in a USD viewer after conversion.