VRM1.0 Viewer is a locally executable tool designed for viewing VRM and VRMA files without any external communication. Users can load files from a selected folder, ensuring all necessary files are provided beforehand. The viewer supports basic functionalities such as verifying VRM and VRMA operations, checking expressions, and serving as a simple viewer for displaying models. Additionally, it allows customization of the background color using HEX codes and offers mouse control for camera positioning, along with animations like blinking and breathing effects.

The software requires a specific folder structure for file compatibility and utilizes a JSON format for configuration. While the viewer does not guarantee compatibility with all tools, it is designed to function with VRM models created in VRoidStudio. The application operates securely, reading files only from user-selected directories and does not collect user data or require account registration. Users are advised to handle any licensing issues related to VRM and VRMA files independently.