Can ChatGPT read your site?

Only if its crawler is not blocked and your text sits in the HTML. Paste a URL and see exactly what each one gets back.

What does the check look at?

We fetch your homepage once as a plain browser, then again as each retrieval crawler: OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-User, Claude-SearchBot, PerplexityBot and Google-Extended. Then we compare the answers. A robots.txt rule, a firewall rule, or content that only exists after JavaScript shows up as a smaller or missing body.