Click on the imported asset, go to the Rig tab in the Inspector, change the Animation Type to Humanoid , and click Apply. Configure the bones to ensure there are no red, unassigned slots.
Converting a GLB 3D model into a VRM avatar usually results in broken textures, ruined expressions, and broken physics. This guide provides a professional workflow to convert GLB to VRM while maintaining high quality, proper materials, and standard-compliant rigging. Understanding the Formats: GLB vs. VRM
Telling the software which part is the arm, leg, or head.
If your model looks "inside out," check your face orientation in Blender before exporting.
A VRM file is built on top of the glTF 2.0 file format but contains specific extensions designed for humanlike avatars. It includes metadata for humanoid bones, eye gaze control, facial expressions (blend shapes), physical bone simulations (spring bones), and robust first-person perspective settings. You cannot simply rename the file extension; you must map human traits to the file structure. Step 1: Optimize the Source GLB File
I can provide specific shader values and bone configuration steps tailored to your design. Share public link
Set up collider groups on the head and hands to prevent hair or clothes from clipping through the body. D. Metadata & Export
Before proceeding to export, ensure your model is properly set up:
var meta = vrm.Meta; meta.Title = Path.GetFileNameWithoutExtension(glbPath); meta.Version = "1.0";
If you have a specific character model, tell me:
When converting, ensure your target is , not 0.x. The process above works for both, but VRM 1.0 requires a SpringBone Collider Group named AutoColliderCapsules . Without this, the avatar will have no collision.
VRM is an open, platform-independent file format for 3D humanoid avatars, built as an extension of glTF 2.0. While it inherits glTF's efficient structure, VRM standardizes the data to make it immediately usable as an avatar. This includes:
Websites like aconvert.com or glb-to-vrm.com exist, but they rarely produce high-quality results.
Built-in blendshapes for blinking, talking, and emotion. First-Person View Settings: Defines camera behavior.
If your GLB had rigid hair, you need to set up VRMSpringBone components in Unity for natural movement. This makes the model feel "alive." 3. Blendshapes (Facial Expressions)
