Google-Extended — Google's AI Training Opt-Out
Google-Extended lets you block Gemini AI training without affecting Google Search rankings. Learn exactly how it works and how to configure robots.txt.
QUICK FACTS
Google-Extended What is Google-Extended?
Google-Extended is a separate user-agent token that lets website operators opt out of having their content used to train Google's generative AI models, including Gemini and Vertex AI. Blocking Google-Extended does NOT affect Google Search rankings — Google Search uses Googlebot, which is a completely separate user-agent. This distinction is critical: you can block AI training while keeping full Google Search visibility.
How to Block Google-Extended
Add the following to your robots.txt file (located at the root of your website):
User-agent: Google-Extended Disallow: /
What Happens When You Block Google-Extended
Your content will not be used for Gemini, Vertex AI, or AI Overviews training. Google Search rankings are completely unaffected.
Should You Block Google-Extended?
Google-Extended is a training crawler — it collects data to build AI models. If you want to prevent your content from being used in future AI training by Google, block it. This is a one-way decision: blocking today only affects future crawls, not data already collected.
Google-Extended vs Other Google Crawlers
Google currently operates Google-Extended as a standalone crawler. Unlike companies like OpenAI and Anthropic that split functionality across multiple user-agents, Google uses a single identifier for its AI crawling operations.
GENERATE YOUR ROBOTS.TXT
Use our visual generator to create a robots.txt file that blocks Google-Extended and any other crawlers you want to opt out of.