{"id":"ia.semantic-html","name":"Semantic HTML elements","verify":{"command":null,"rescan":"isagentready results {domain} --checkpoint ia.semantic-html","expect":null},"fix":{"steps":[{"action":"Replace layout div elements with semantic elements.","order":1,"language":"html","code_example":"<header>...</header>\n<nav>...</nav>\n<main>\n  <article>...</article>\n</main>\n<footer>...</footer>"},{"action":"Use one main element per page.","order":2,"language":null,"code_example":null}],"summary":"Use main, nav, header, footer and article for the page structure.","skill":{"name":"content-semantics","anchor":"ia.semantic-html"}},"category":"semantics","aggregate":null,"references":[{"title":"MDN Semantics in HTML","kind":"guide","url":"https://developer.mozilla.org/en-US/docs/Glossary/Semantics#semantics_in_html"},{"title":"W3C HTML5 Document Sections","kind":"spec","url":"https://www.w3.org/TR/html52/sections.html"}],"stage":"read","lifecycle":{"introduced":"2026-08-24","revised":["2026-09-02"],"retired":null,"replaced_by":null},"methodology_version":"2026-10-22","evidence_tier":"standard","evidence_source":{"title":"MDN Semantics in HTML","url":"https://developer.mozilla.org/en-US/docs/Glossary/Semantics#semantics_in_html"},"why":"Browser agents may combine the DOM, accessibility tree, and screenshots. Semantic elements like <main>, <nav>, and <article> provide durable structural meaning across those representations.","profiles":["ai_search_visibility","browser_agent_usability"],"score_role":"core","legacy_id":"3.3","i18n":{"nl":{"name":"Semantische HTML-elementen","steps":["Vervang layout-div-elementen door semantische elementen.","Gebruik een main-element per pagina."],"why":"Browseragents combineren de DOM, de accessibility tree en screenshots. Semantische elementen zoals <main>, <nav> en <article> geven blijvende structuur in al die weergaven.","fix_summary":"Gebruik main, nav, header, footer en article voor de paginastructuur.","verify_expect":null}},"ar_practice_ids":[],"strength":"MUST","ar_mapping":"none","evidence_type":"recommendation","detail_url":"https://isagentready.com/en/methodology/checkpoints/ia.semantic-html","maturity":"essential","applicability":{"mode":"always","condition":null,"surfaces":["website"]}}