Google-Extended
Google-Extended controls whether Gemini may use a site when answering questions. It does not affect Google Search.
- Operated by
- robots.txt token
Google-Extended- User-Agent sent
- None — Google states this token is never sent as a User-Agent.
- Honours robots.txt
- Yes — Google documents that it honours robots.txt.
This one is on the answer path.
Google uses it to decide whether Gemini can use your site when answering questions, so while it's blocked your pages can't be used in Gemini's answers. It does not affect Google Search.
Two lines in robots.txt.
Block Google-Extended
User-agent: Google-Extended
Disallow: /Goes in the robots.txt at the root of your domain.
Allow Google-Extended
User-agent: Google-Extended
Allow: /Only needed if a broader rule already blocks it — a group of its own overrides the wildcard.
Group selection matches the token, not the full User-Agent string, and it is case-insensitive. A rule under User-agent: * applies only when the crawler has no group of its own.
Everything on this page was read from Google’s own published source on . Read the source. Vendors change these pages without announcing it — if you find something here that no longer matches, tell us and we’ll correct it.
We run a crawler too. Here is what it does and how to block it.
Knowing what Google-Extended does doesn’t tell you whether your site lets it in.
The free checker reads your robots.txt and asks your site for its homepage as each major AI crawler, then tells you which ones it turned away. No signup, about 20 seconds.