RDFa
RDFa (Resource Description Framework in Attributes) is a W3C standard that allows embedding structured metadata, specifically RDF triples, directly into HTML, XHTML, and XML documents using attributes. It enables web pages to include machine-readable data about their content, such as people, events, or products, without altering the human-readable presentation. This facilitates better data integration, search engine optimization, and accessibility for semantic web applications.
Developers should learn RDFa when building websites that require rich, structured data for search engines, social media platforms, or semantic web tools, as it enhances discoverability and interoperability. It is particularly useful for e-commerce sites, news articles, and personal profiles to implement schema.org vocabularies for improved SEO and data sharing. Use cases include embedding product details, event information, or authorship metadata directly in web pages.