orgviz v2 renders to a web interface. orgviz v1 renders to a static image, such as a PNG or SVG.
orgviz is installed as a docker container, and run with a .yml organization file. Avatars are stored in the "avatars" directory in your config docker volume.
To get started, see https://jamesread.github.io/orgviz/ for the documentation.
Example avatars all from plexels.com.