3DViewerOnline is a web-based platform that allows users to view and share 3D models directly in their browsers without requiring additional software. The service supports a wide range of 3D file formats and provides tools for model visualization, annotation, and collaboration. Users can upload models to the platform, customize the viewing settings, and share them via links or embedded options. The platform is designed for ease of use, making it accessible for professionals and hobbyists alike who need to review and present 3D content.