HEAD is a reference guide to HTML head elements.
The project addresses the challenge of understanding which elements belong in an HTML document's head section and how to structure them correctly. It provides a comprehensive catalog of valid head elements—including meta, link, title, style, script, noscript, and base tags—along with guidance on their purpose and recommended ordering. The guide covers essential elements like character encoding and viewport settings, as well as specialized tags for social media integration, search engine optimization, platform-specific configurations, and structured data markup.
Developers building websites or applications should use this guide when setting up new projects or auditing existing head sections. It suits anyone who needs a single reference for head element best practices, from beginners learning HTML fundamentals to experienced developers ensuring they haven't missed important meta tags or resource hints. The guide is particularly valuable for understanding the recommended order of elements, which affects both rendering performance and correct document interpretation by browsers and crawlers. It covers platform-specific considerations for Apple iOS, Google Android, and Chinese browsers, as well as emerging standards like Fediverse and Dublin Core metadata.
The project maintains an organized, categorized reference structure with sections for recommended minimums, meta tags, social graph markup, schema.org integration, and deprecated elements. It includes translations and actively accepts contributions, indicating ongoing community engagement with the resource.
