Free tool · GEO / AI visibility
Is your site visible to AI?
Check whether ChatGPT, Claude, Perplexity, Gemini, Copilot and Mistral can read and cite your site. A real analysis — not an estimate — in seconds, no signup.
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What the test actually checks
- AI bot accessWe read your robots.txt and determine, engine by engine, whether GPTBot, ClaudeBot, PerplexityBot, Google-Extended, Bingbot and MistralAI are allowed or blocked.
- llms.txt fileWe check for an llms.txt, the emerging standard that guides LLMs to your important content.
- IndexabilityWe detect noindex / noai tags that make your page invisible to engines and AI.
- Structured dataWe spot schema.org markup (JSON-LD) that helps AI understand and cite your content.
- Content readable without JavaScriptMost AI bots don't run JavaScript: we check that your content is present in the server HTML.
- SitemapWe confirm a sitemap.xml exposes your pages to crawlers.
Frequently asked questions about AI visibility
What is AI visibility (GEO)?
AI visibility, or GEO (Generative Engine Optimization), is your site's ability to be read, understood and cited by answer engines like ChatGPT, Perplexity, Claude or Google AI Overviews. When an AI answers a question it relies on sites it was able to crawl: if yours is blocked or unreadable, it never shows up in its answers.
How do I allow ChatGPT, Claude and Perplexity to crawl my site?
In your robots.txt, do not block their bots: GPTBot and OAI-SearchBot (ChatGPT/OpenAI), ClaudeBot (Anthropic), PerplexityBot (Perplexity), Google-Extended (Gemini) and MistralAI-User (Mistral). A rule “Disallow: /” under one of these user-agents blocks it entirely. The test above tells you exactly which are allowed or blocked.
What is an llms.txt file and do I need one?
llms.txt is a text file at the root of your domain (like robots.txt) that lists, in Markdown, your most useful pages for language models. It isn't universally followed yet, but it clearly signals your reference content and is a good AI-optimisation habit. Not mandatory, but a plus.
Does blocking AI bots improve my SEO?
No. Blocking GPTBot or ClaudeBot has no positive effect on your classic Google ranking — these are separate bots. But blocking answer engines means never being cited when millions of users ask an AI their questions. The choice depends on your strategy: maximum visibility, or protecting proprietary content.
Why is my JavaScript content a problem for AI?
Most AI bots fetch the raw HTML without running JavaScript. If your content only appears after a front-end app renders (React, Vue…), AIs see a near-empty page. The fix: server-side rendering (SSR), pre-rendering or static generation so the text is present in the HTML response.
How do I know who actually cites me in AI?
This test measures your technical eligibility (can you be read?). To measure reality — which AI bots actually visit your site, which assistants send you traffic, which pages get cited — you need continuous measurement. Snorklee's AI presence section tracks AI crawls and visits from ChatGPT, Perplexity and others, in sovereign, privacy-first analytics.
Continuously measure who cites you
The test gives a snapshot. Snorklee films: AI crawls, visits from assistants, cited pages — in European analytics, with no cookie and no banner.