Posts tagged “Semantic HTML”
Heading hierarchy, landmarks and accessible markup as machine-readability signals, plus the head tags that hide a page from AI while Google still lists it.
An AI crawler parses structure before it weighs meaning: headings tell it where a topic starts, landmarks tell it which part of the page is content and which is furniture, and an element that is missing leaves it guessing. Semantic markup is the cheapest signal on this whole list, because getting it right costs nothing and getting it wrong shows up nowhere a human would notice.
The posts under this tag treat that as a measurement problem rather than a style guide. One scans 41 pages ranking for the topic and finds that clean heading order is table stakes rather than an edge, since nearly every competitor already has it. The other traces three words in the head of a document that can drop a page out of ChatGPT, Claude and Perplexity while Google keeps listing it. Markup that validates is not the same as markup that gets read.
2 articles
The 3-Word Tag That Hides Your Best Pages from AI
Three words in `<head>` can hide your best article from ChatGPT, Claude, and Perplexity — even if Google still shows it. The silent AEO killer.
· 10 min read
Semantic HTML for AI Crawlers: Clean Headings Aren't Enough
AI crawlers parse semantic HTML before anything else, but a scan of 41 pages ranking for this topic shows clean structure is table stakes, not an edge.
· 18 min read