GLB is a binary file format used for 3D models, which contains everything needed to display a 3D model, including geometry, textures, and animations. It is based on the GL Transmission Format (GLTF) and is widely supported by various 3D modeling software, such as Blender, Autodesk Maya, and 3ds Max. GLB files are often used for web-based applications, such as 3D model viewers, online 3D modeling tools, and e-commerce platforms.
Sometimes, even after CATS and Blender, the VRM is "broken" inside Unity or VRChat. The blend shapes don't work, or the colliders are missing.
Once the model is in Blender, look at the panel (right sidebar, the cat head icon).
: Download and install the VRM Add-on for Blender. Import GLB : Go to File > Import > glTF 2.0 (.glb/.gltf) . Prepare the Rig : Ensure your model is in a T-Pose (mandatory for VRM).
Standardizing facial expressions (e.g., "A-I-U-E-O" mouth shapes).
Select the model and go to the tab. Under Animation Type , ensure it is set to Humanoid .