About VRM-1.0

In the 3D avatar file format VRM announced in 2018, it is a standard that fixes problems and errors that are found as the use progresses, and adds functions that are considered to be necessary in the future.

Traditional VRMs will be classified as VRM 0.x and deprecated in the future, and VRM 1.0 will become a formal standard in the future.

About VRM-1.0Beta

VRM 1.0 is being developed by dividing it into multiple parts.Each part takes one of the three development stages.1: It’s still a draft phase that can change significantly2: Although it has not been confirmed, it is a Beta stage that can be used sufficiently3: It is a official version that has been confirmed as a standard

As of November 2021, parts (VRM_node_constraint) that are in the draft phase are also left.However, because it is available throughout, the exception of the Constraint feature is called VRM 1.0Beta.

Public documentations

VRM-1.0 specification

VRM 1.0 specifications defined using documentation and JSON Schema.


VRM Public License Document 1.0

This is a unique vrm license that takes into account the permission for the personality of the avatar.

VRM Public License Document 1.0


Unity’s implementation UniVRM exists as an official implementation.