Converting GLB to VRM is a common task for creators who want to use 3D character models for VTubing or in social VR applications. VRM is essentially a glTF/GLB file with additional metadata for humanoid avatars, such as bone mapping and expressions.

V-Sekai gltf2vrm: A web-based tool on GitHub that allows you to map bones and export directly in your browser.

Step 3: Spring Bones & Colliders (The "Full" part) GLB has no physics. VRM requires it.

1. Right-click your prepared avatar in the Assets folder.
2. Select VRM > Export to VRM 0.0.
3. Configure the export settings (ensure "Force Write T-Pose" is checked).
4. Click Export.

A GLB file typically contains a 3D mesh, materials, and potentially an animation rig. However, it lacks the "personality" and behavioral rules required for modern virtual platforms. Converting to VRM transforms a static or rigged model into an interoperable avatar that carries its own: Physics Rules