The Code Preview plugin for Obsidian allows users to preview code directly from within their notes. By specifying a file path, users can display portions of the code, highlighting specific lines or sections based on configurable parameters. The plugin supports a variety of features such as line range selection, regular expression matching, and text-based search for highlighting code. It also includes options for customizing the appearance, such as line numbers and background color for highlights. Ideal for developers and anyone working with code in Obsidian, the plugin offers an easy way to visualize and navigate through code files without leaving the note-taking environment.