F3D serves as a rapid and streamlined 3D visualization tool that accommodates a variety of file formats ranging from digital assets to scientific data, such as glTF, STL, STEP, PLY, OBJ, FBX, and Alembic, while also enabling animation playback and offering an extensive array of rendering and texturing capabilities, including real-time physically based rendering and ray tracing. This versatile viewer is entirely manageable through command line inputs and supports configuration files, allowing for the generation of thumbnails, interactive hotkeys, drag-and-drop functionality, and seamless integration with file managers. In addition to its viewing capabilities, F3D features the libf3d library, which provides a straightforward means of rendering meshes and includes bindings for both C++ and Python, along with experimental bindings for Java and JavaScript as well. Furthermore, the user-friendly interface ensures that both novice and experienced users can easily navigate and utilize its features effectively.