Short answer
Google-Extended is a robots.txt token that limits the use of your content for AI training and grounding in some of Google's other systems, such as Gemini. Appearance in Google Search, including AI Overviews and AI Mode, is controlled by Googlebot directives and snippet controls, not Google-Extended.
Controls for Google AI features
| Goal | Control |
|---|---|
| Stay out of Search entirely | Googlebot disallow or noindex |
| Limit what is shown | nosnippet, data-nosnippet, max-snippet |
| Limit training/grounding elsewhere | Google-Extended |
Questions
Will blocking Google-Extended hurt rankings?
Google's documentation describes it separately from Search; it isn't a ranking signal.
Facts checked against the sources below on 12 October 2026. Platforms change quickly: if something here no longer matches what you see, tell us and we will update it.
