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Which websites block Google-Extended?

Google-Extended is Google's crawler that controls use of content for Gemini training and grounding (does not affect Google Search). Of the 1,278 popular websites we checked, 205 (16%) block it completely and 860 restrict some paths. 234 sites name it explicitly in robots.txt.

How to block or allow Google-Extended

# block
User-agent: Google-Extended
Disallow: /

# allow
User-agent: Google-Extended
Allow: /

Google-Extended is a training crawler: blocking it opts out of model training but doesn't by itself remove you from AI answers. Check your robots.txt.

Sites that block Google-Extended (205)

Popular sites that allow Google-Extended

What is Google-Extended?

Google-Extended is operated by Google. According to Google's documentation, it controls use of content for Gemini training and grounding (does not affect Google Search).

How many websites block Google-Extended?

205 of the 1278 popular websites in our directory (16%) block it completely in robots.txt.

Should I block Google-Extended?

It depends on whether you're comfortable with your content being used for AI training. Blocking it doesn't remove you from AI answers, which use separate crawlers.