What is GEO Optimization (Generative Engine Optimization)?

GEO Optimization (Generative Engine Optimization) is the targeted adaptation of web content so that AI-based search systems like ChatGPT, Perplexity AI and Google Gemini recognize the page as a trustworthy source and cite it in their answers.

How does the snaff.ai GEO Checker work?

The snaff.ai GEO Checker analyzes a URL for over 30 GEO signals: AI bot access in robots.txt, llms.txt, ai.txt, Schema.org JSON-LD (Organization, FAQPage, Article), E-E-A-T signals, semantic HTML and citability. The result is a weighted score from 0-100.

What is llms.txt and why does it matter?

llms.txt is a new file in the root directory of a website that provides language models (LLMs) with a structured summary of the website in Markdown. AI systems can use it to immediately understand the context of a brand without parsing the entire HTML.

Which AI bots should I allow in robots.txt?

The most important AI bots are: GPTBot and OAI-SearchBot (OpenAI/ChatGPT), ClaudeBot and anthropic-ai (Anthropic/Claude), Google-Extended (Google Gemini Training), PerplexityBot (Perplexity AI), Bingbot (Bing/Copilot) and Applebot-Extended (Apple Intelligence). All should be allowed with Allow: / in robots.txt.

What is the difference between SEO and GEO?

SEO (Search Engine Optimization) optimizes websites for classic search engines like Google that show blue links in result lists. GEO (Generative Engine Optimization) optimizes for AI systems that generate direct answers while citing sources. GEO focuses more on structured data, citability, E-E-A-T and AI bot access.

Know what AI search
understands about your website.

Run a free GEO audit to uncover the technical, content, and trust signals that help AI answer engines understand and reference your brand.

snaff is a free Generative Engine Optimization (GEO) checker that analyzes how well a website can be found and cited as a source by AI answer engines like ChatGPT, Perplexity and Google Gemini.

search Analyze your website

Mode:

HTTPS:// is added automatically.

No signup for the first audit · Public URLs only · Clear recommendations

Move from assumptions to a prioritized GEO action plan. Built for the people responsible for your content, SEO, and website.

check_circle Single-site analysis, comparison, and multi-URL checks in one tool

check_circle Surface AI-readiness and citability signals automatically

check_circle Include subpages for a deeper site-level audit

Know what you will get

A focused GEO report your whole team can use.

See your overall readiness, the signals behind it, and the next actions worth prioritizing. No vague checklist — just a clear starting point for content, SEO, and development.

check_circle Technical access, content clarity, and trust in one view

Example report

yourwebsite.com

GEO audit

74of 100

Technical access92%

Content clarity68%

Trust & authority61%

Priority action: Add clear author information and FAQPage markup to your highest-value content.

Transforming now… Snafffied soon

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Free website check for AI search

Does AI understand why your website is the best source?

Check your website for GEO signals for generative search. snaff clearly shows what ChatGPT, Perplexity, and Gemini can understand about your offer — technically and editorially.

robot_2

AI Bot Access

Check whether bots can technically reach your public content.

schema

Structured Data

Check JSON-LD and Schema.org for clear, machine-readable entities.

verified_user

E-E-A-T Signals

Evaluate visible signals of experience, expertise, and trust.

format_quote

Citability

See whether statements are clear, direct, and useful as source material.

100 %

Focused on clear, actionable findings

ChatGPT | Perplexity | Gemini | Claude

From audit to action

Every finding includes a clear recommendation for content, SEO, or development.

How it works

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Why GEO complements SEO

AI answer engines synthesize information differently from traditional result pages. GEO helps you make your content easier to retrieve, understand, and assess alongside your existing SEO work.

Legacy Search (SERP) Classic SEO — essential foundation

page_infoKeyword-optimized meta tags & titles

linkBacklink volume as primary ranking signal

list_altClick-through from result snippets

Users scroll past blue links to find the AI answer box.

Additional layer

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Generative Engines (GEO) Optimization for generative answer systems

psychologyContextual authority & citation weight

data_objectBot-navigable structured data for direct answers

format_quoteSentence-level citability scoring for AI citations

Clear structure and trustworthy information help answer systems evaluate your content more reliably.

Everything you need to prioritize GEO

Three areas. One shared GEO priority list.

snaff groups the signals that matter into three practical areas, so marketing, content, and development can act on the same priorities.

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Technical access

Checks whether AI systems can reach your public content and understand its structure.

Includes: AI bot access · Structured data

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Content clarity

Reviews whether your page answers questions clearly and provides context that language models can use.

Includes: Citability · llms.txt & ai.txt

format_quote

Trust & authority

Surfaces who stands behind your expertise and gives teams context to prioritize the most meaningful gaps.

Includes: E-E-A-T signals · Compare & prioritize

verified_user

E-E-A-T Signals

Checks visible trust signals such as authorship, freshness, contact information, and transparent accountability.

Why it matters: Credibility starts with verifiable information.

description

llms.txt & ai.txt

Finds optional orientation files for language models and shows whether they are used meaningfully for your brand.

Why it matters: They consolidate context, key pages, and terminology in a clear format.

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Comparison & Prioritization

Compare domains or review multiple pages to prioritize optimizations by impact and effort.

Why it matters: Teams can work toward the same, clearly identified gaps.

From URL to priorities in minutes

How the free GEO analysis works

1
Enter a URL
Enter your website's public URL. No account is needed for the first check.
2
Review your signals
snaff analyzes technical, semantic, and trust-building signals relevant to generative search systems.
3
Prioritize actions
Get a readable report with a score, findings, and specific recommendations for content and technology.

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GEO basics

Generative Engine Optimization (GEO), in short

Generative Engine Optimization (GEO) is the practice of making a website easy for AI answer engines like ChatGPT, Perplexity and Google Gemini to read, understand and cite as a source. snaff.ai analyzes your site and returns a weighted score from 0 to 100%, with prioritized, copy-paste-ready fixes.

fact_check

What snaff.ai checks

AI bot access: robots.txt, llms.txt and ai.txt allow GPTBot, ClaudeBot, PerplexityBot & co.
Structured data: Schema.org JSON-LD (Organization, FAQPage, Article, Breadcrumb).
E-E-A-T signals: clear authorship, dates, contact and sources.
Citability: definition sentences, question headings, concrete numbers and lists.
Brand authority: presence in Wikipedia, Wikidata and DuckDuckGo.
Technical hygiene: canonical tags, indexability and semantic HTML.

insights

GEO in numbers

80%Target score for a well-optimized page

40%Weight of AI bot access + structured data

100%A perfect, fully AI-ready page

0 EURFree plan — no signup required

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Getting started

Paste any URL in the field above and run a free audit. You get a prioritized GEO score in seconds, plus ready-to-paste llms.txt, Schema.org JSON-LD and robots.txt snippets to raise it.

auto_awesome Run your free GEO check

GEO, clearly explained

Frequently asked questions about Generative Engine Optimization

What is Generative Engine Optimization (GEO)? +

Generative Engine Optimization (GEO) is the optimization of content for AI-powered answer systems. The goal is to help systems such as ChatGPT, Perplexity, and Gemini understand an offer correctly, assess it as trustworthy, and consider relevant content in their answers.

Does GEO replace classic SEO? +

No. GEO complements SEO. Sound technology, helpful content, clear information architecture, and brand trust remain the foundation. GEO additionally emphasizes machine-readable entities, direct answers, sources, and clear authorship.

What does the snaff GEO Checker check? +

The checker reviews bot accessibility, robots.txt, structured data, llms.txt and ai.txt, meta information, semantic HTML, E-E-A-T signals, and content citability. The score is guidance, not a promise of rankings or mentions by an AI system.

Which actions usually have the greatest impact? +

Start with accessible, indexable pages. Then add clear structured data, author and freshness information, and precise passages that answer questions directly. The best sequence depends on your audit findings and business model.

Ready to see your GEO priorities?

Start with a free audit and get a clear next step for your website.

Know what AI searchunderstands about your website.

A focused GEO report your whole team can use.

Does AI understand why your website is the best source?

From audit to action

Why GEO complements SEO

Three areas. One shared GEO priority list.

Technical access

Content clarity

Trust & authority

E-E-A-T Signals

llms.txt & ai.txt

Comparison & Prioritization

How the free GEO analysis works

Enter a URL

Review your signals

Prioritize actions

Generative Engine Optimization (GEO), in short

What snaff.ai checks

GEO in numbers

Getting started

Frequently asked questions about Generative Engine Optimization

Ready to see your GEO priorities?

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Ready-to-paste fix files

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Know what AI search
understands about your website.