The Publish and GitHub URL plugin allows Obsidian users to quickly copy and access URLs for notes published on an Obsidian Publish site. Users can generate direct links to specific notes and copy them for sharing or reference. The plugin also offers the ability to open the current note's URL directly in a browser. Additionally, it provides integration with GitHub by allowing users to view the Git commit history of the current note, making it useful for version tracking. These features are accessible via a command or optional file menu entry, offering flexibility in workflow. The plugin ensures that URLs are only created for notes with the `publish` flag enabled, providing control over which notes are shareable or linked.