JekyllFileWizard is a comprehensive gem designed to streamline the management and dynamic updating of Jekyll site structures. It automates the process of checking, creating, and updating various files in a Jekyll project, including HTML files, data files, and more. The gem offers features like dynamic HTML structure handling, integration with Jekyll's data files, template management, robust error handling, an interactive command-line interface, and automated testing and validation. It's ideal for Jekyll site developers looking to enhance their site's functionality and maintainability, making it easier to manage large and complex Jekyll sites.