Glossary · Content & Optimization
Semantic HTML
HTML markup that uses tags according to their meaning — headings, lists, tables, articles — rather than relying purely on generic containers and visual styling.
Why it helps machine parsing
Tags like <h1>, <ul>, <table> and <article> tell a crawler what role a piece of content plays on the page — a heading is unambiguously a heading, not just text styled larger by CSS — which makes it far easier to extract accurately than markup built entirely from generic <div> containers.
See more terms in the full glossary, or read the AI Visibility 101 guide for the full picture.