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Free tool · GEO (Generative Engine Optimization) / AI visibility

Is your site readable by AI?

Check the technical signals that help ChatGPT, Claude, Perplexity, Gemini, Copilot and Mistral discover, read and understand your pages: robots.txt, indexability, sitemap, structured data and HTML content.

Analysis of your site's public signals — not a marketing estimate — in seconds, no signup.

Enter a public domain or URL. https:// is added automatically when needed.

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The check analyses only public signals accessible without signing in.

What the test actually checks

The checker does not predict your position in AI answers. It checks technical signals that can help or block discovery of your pages.

  • AI bot accessThe check reads your robots.txt and indicates, engine by engine, whether major AI crawlers seem allowed or blocked: GPTBot, ClaudeBot, PerplexityBot, Google-Extended, Bingbot, MistralAI and other recognised agents.
  • llms.txt fileThe check verifies whether an llms.txt file is present. This emerging format can help guide models and AI agents to important content, but it is not yet a universal standard or a citation guarantee.
  • IndexabilityThe check detects signals that can prevent indexing or reuse by some robots: noindex, robots meta, X-Robots-Tag and noai directives when present. Different robots may interpret these directives differently.
  • Structured dataThe check detects schema.org markup, especially JSON-LD, which helps search engines and some assistants understand the content type, author, organisation, product or article.
  • Content readable without JavaScriptThe check verifies whether the main content is present in the initial HTML. Some crawlers or agents do not run JavaScript like a full browser, so client-side-only rendering can reduce readability.
  • SitemapThe check verifies the presence of a sitemap.xml or a sitemap link in robots.txt, to help crawlers discover important pages.

Frequently asked questions about AI visibility

What is AI visibility (GEO)?
GEO, or Generative Engine Optimization, means making your content easier to discover, understand and cite by generative engines and AI assistants. It involves technical accessibility, clear content, structured data, indexability and the reputation of your pages.
What does this test guarantee?
The check does not guarantee that ChatGPT, Claude, Perplexity or Gemini will cite your site. It verifies public technical signals: robots.txt, indexability, sitemap, structured data, HTML content and helper files such as llms.txt. It is a first check, not a measure of real presence in answers.
How do I allow ChatGPT, Claude and Perplexity to crawl my site?
Check your robots.txt and avoid blocking the agents you want to allow. The check indicates which crawlers seem allowed or blocked. Depending on your strategy, you can allow some agents and block others.
What is an llms.txt file and do I need one?
llms.txt is an emerging convention intended to help models and AI agents find important content. It can be useful, but it is not universally recognised and does not guarantee citation.
Does blocking AI bots improve my SEO?
Not directly. Blocking or allowing AI robots is a content, rights and visibility strategy choice. It can influence how some systems discover your pages, but it is not a classic SEO lever.
Why is my JavaScript content a problem for AI?
If the main content appears only after JavaScript runs, some crawlers may not see it correctly. Server rendering or rich initial HTML makes it easier for engines, crawlers and assistants to read.
How do I know who actually cites me in AI?
A technical check gives a snapshot of your public signals. To track what happens over time, Snorklee AI Presence measures observed AI crawls, visits from assistants and cited pages when a referrer or usable signal is available.

Move from a one-off check to continuous tracking

The checker gives a technical snapshot. Snorklee AI Presence tracks observed AI crawls, visits from assistants and cited pages over time when those signals are available — in European analytics, with no analytics cookie.

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