Deindexing

Deindexing means a page drops out of a search engine's index and can therefore no longer appear in the results. The page may still sit on the website and work perfectly well for visitors, but in search it does not exist. The opposite is indexing, where Google takes a crawled page into its index and can start showing it.

Deliberate deindexing

Some pages are better kept out of Google: internal search results, thin filter variants, leftovers from a migration. The instruments are the noindex tag, which asks the search engine to drop the page at the next crawl, the status codes 404 and 410, and the removals tool in Google Search Console when speed matters. A conscious index strategy belongs to the technical foundation of SEO: the less noise Google has to work through, the more attention reaches the pages meant to drive the business.

Unintended deindexing

Google also removes pages on its own account. The usual causes are technical mistakes, such as a noindex tag carried over from a test environment, thin or duplicated content, or in serious cases a manual action. A sudden drop in traffic often has the index as its real explanation rather than rankings.

A deindexed page is invisible to AI Overviews and AI assistants too, since they can only cite pages that exist in the index. The guide to crawling, indexing and bot control covers the interplay between crawl, index and visibility.