The Digital Garden plugin allows users to publish their Obsidian notes online in a customizable and personal way. It supports various features, including backlinks, embedded media, file tree navigation, and data visualization with Dataview queries. Users can easily manage their published content by specifying which notes to include and customize the site's appearance using Obsidian themes and CSS styles. The plugin integrates with GitHub and Vercel for hosting, providing a seamless workflow for updating and maintaining a digital garden. It supports advanced features such as graph visualization, transclusion of notes and media, and customizable site templates for a unique web presence.