Convert Glb To Vrm Full -

pip install gltf-vrm-export

The bone hierarchy is wrong. In Blender, ensure the chest bone is a child of spine, neck is a child of chest, and head is a child of neck. GLB files sometimes skip the chest – you must add a "virtual" chest bone.

GLB files often come with a generic armature (like Armature.001). VRM requires a very specific bone naming convention.

Step 1: Import the GLB Open Blender. File > Import > glTF 2.0 (.glb/.gltf). Delete the default cube. convert glb to vrm full

Step 2: Restructure the Armature You have two options:

Step 3: Fix the T-Pose VRM expects a specific T-pose (arms straight out, palms down, fingers straight). Use Blender’s Pose Mode to rotate the arms to 90 degrees horizontally. Constantly check the VRM addon’s "Validator" tab to see missing bones.

Step 4: Export as VRM (Test) File > Export > VRM (.vrm). Import it back in immediately to check. If the model explodes, your bone orientation is wrong. pip install gltf-vrm-export

VRM requires:

If your GLB isn’t humanoid, you must rig/rename bones manually or use Mixamo.

This is where most conversions fail. GLB files rarely contain VRM-ready expressions (Joy, Angry, Sad, Fun, etc.). A "full" conversion requires you to map existing shape keys or create new ones. VRM Meta: set title, author, contact, and allowed

Scenario A: Your GLB has Morph Targets (Shape Keys) Look at the mesh’s Object Data Properties (Green triangle icon). If you see keys like eye_blink_L, mouth_smile, or brow_up, you are lucky.

Scenario B: Your GLB is Static (No Face Shapes) You must sculpt or create shape keys manually. This is time-consuming but essential for a convincing avatar.

Automated option (command-line / batch):