noindex
Directive that instructs search engines and crawlers not to include a page in search or index results.
Definition
noindex is a value for the robots meta tag (<meta name="robots" content="noindex" />) that tells crawlers not to add the page to search results or to their index. It applies at the page level (unlike robots.txt, which applies to paths). Typical uses: thank-you pages, duplicate listings, private or low-value content. It affects indexing; for what AI systems may do with content after access, use Content Signals.
Relevance to GEO
Pages marked noindex are typically not used in AI-generated answers. Use noindex for pages you don't want discovered; combine with Content Signals when you allow crawl but want to restrict training or search use.