The CardNote plugin for Obsidian is designed to help users quickly visualize and organize their notes in the Obsidian Canvas and Excalidraw plugins. It allows for easy creation of new notes and insertion of links into the canvas, enabling a seamless drag-and-drop experience. Users can quickly extract blocks from existing notes, including headings, paragraphs, and bullet points, and organize them visually. The plugin supports foldable blocks and markdown syntax, providing flexibility in managing notes. It also offers alternative methods for note creation and card view for better organization, making it a powerful tool for users who prefer a more visual approach to note management.