The Canvas minimap plugin enhances the navigation experience within Obsidian's canvas feature by adding a minimap. This plugin allows users to get an overview of their canvas, making it easier to navigate through larger notes. The minimap can be enabled through the command palette or settings, and clicking on the minimap takes users directly to the corresponding section of the canvas. The behavior of the minimap can be customized to suit the user's preference, offering a more efficient way to manage complex canvas notes.