Set where the camera sits inside the head so you don't see the inside of your own skull. Method 1: The Fast Way (Online Converters)
Ensure your model’s Animation Type is set to Humanoid in the Inspector window. Place in Scene: Drag the model into the Hierarchy.
A popular web-based utility. You simply upload your GLB, and it attempts to wrap it in a VRM container. Pros: Instant, no installation. Cons: Limited control over physics and facial expressions. Method 2: The Professional Way (Unity + UniVRM) convert glb to vrm
If you have a simple model and don't want to install heavy software, online tools are your best bet.
Drag the UniVRM package into your project assets. Import your GLB: Drag your GLB file into the assets folder. Set where the camera sits inside the head
Set up "BlendShapes" for smiling, blinking, and talking.
Create "Spring Bones" so hair and clothing move realistically. A popular web-based utility
Select the model, go to the top menu VRM0 -> Export to VRM . Fill in the required metadata (Title, Author, Version).