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How to make your website appear in ChatGPT answers (GEO guide 2026)

Most websites are invisible to AI engines like ChatGPT, Perplexity, and Google AI Overviews.

Not because of bad SEO because of bad *GEO *(Generative Engine Optimization).

Here's the technical checklist I use to fix that.

What AI engines actually look for

Unlike Google (backlinks + keywords), LLMs select sources based on:

Extractable content blocks (definitions, lists, tables)
Verifiable author signals (E-E-A-T)
Thematic domain consistency
Structured data (Schema.org)

**The technical checklist

  1. Add llms.txt to your root** # llms.txt > [Your site name] — [one-line description]

Priority content

  • [/blog/your-best-article]: Article title
  • [/services/your-service]: Service description

Author

  • Enzo Marcelle: Webflow & GEO specialist

2. Structured data — FAQ schema
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [{
"@type": "Question",
"name": "What is GEO?",
"acceptedAnswer": {
"@type": "Answer",
"text": "GEO (Generative Engine Optimization) is..."
}
}]
}

3. Content structure that LLMs extract

What is X?

X is [direct definition in one sentence].
[2-3 sentences of context]

Key points:

  • Term 1: explanation (self-contained)
  • Term 2: explanation (self-contained)

4. Author markup

Real result

Applied this for a client → position 1 Google in 5 days, 3 featured snippets, 0 backlinks.

Full guide (FR) → celestia-studio.fr/blog/geo-referencement-ia-2026

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