Middleman is a Ruby-based static site generator and web framework used to transform templates and assets into standalone HTML, CSS, and JavaScript files. It functions as a multi-engine template processor and build tool, converting source markup into production-ready websites that can be hosted on any web server.
The system is distinguished by a comprehensive asset pipeline that handles compression, minification, and fingerprinting to optimize web delivery. It features an extensible architecture with lifecycle hooks and a middleware-based request interception layer, allowing for the programmatic manipulation of content and site structure.
The project covers a broad range of capabilities, including multilingual site localization, static blog management with tag and archive organization, and data-driven content injection. It also provides development tools such as a local preview server with automatic browser refreshing and various deployment options for pushing files via rsync, FTP, or Git.
Project initialization is supported through skeleton creation and templating utilities to bootstrap new site structures.