AEO Checker
Free & open-source AEO/GEO scanner

Is your site ready
for AI search?

See how well ChatGPT can discover, understand, and cite your content.

No signup required

What we analyze

Three dimensions that determine your AI search readiness.

AI Discoverability

Checks robots.txt, llms.txt, sitemap, and AI crawler access rules to ensure search engines can find and index your content.

Content Structure

Analyzes schema markup, meta quality, headings, and content organization for optimal AI comprehension.

AI Citability

Measures how easily ChatGPT, Perplexity, and Google AI Overviews can quote and cite your content.

How it works

1

Enter your URL

Paste any publicly accessible website URL.

2

We scan everything

Robots.txt, schema, meta tags, content structure, citability.

3

Get your report

Detailed score with specific recommendations.

What is Answer Engine Optimization?

Answer Engine Optimization (AEO) is the practice of making your website discoverable and citable by AI-powered answer engines like ChatGPT, Claude, Perplexity, and Google AI Overviews. Unlike traditional SEO which focuses on ranking in search results, AEO ensures your content is understood, referenced, and cited when AI systems generate answers. Studies show that 65% of searches now include AI-generated summaries, making AEO essential for modern web visibility.

AEO Checker analyzes your site across three key dimensions — AI discoverability, content structure, and citability — and provides actionable recommendations to improve your score. Our scanner checks over 30 individual signals including:

  • robots.txt AI crawler directives
  • llms.txt and llms-full.txt presence
  • JSON-LD structured data (Organization, Article, FAQPage)
  • Meta tags quality and completeness
  • Sitemap accessibility and validity
  • Content heading hierarchy (H1-H6)
  • Paragraph length and readability
  • Canonical URL configuration
  • Open Graph and Twitter Card tags
  • Per-page citability scoring

Frequently asked questions

What is the difference between AEO and SEO?

SEO (Search Engine Optimization) focuses on ranking in traditional search engine results pages. AEO (Answer Engine Optimization) focuses on making your content discoverable and citable by AI-powered answer engines like ChatGPT, Claude, and Perplexity. While SEO targets keywords and backlinks, AEO emphasizes structured data, machine-readable content formats like llms.txt, and clear content structure that AI systems can parse and cite accurately.

How does AEO Checker calculate the score?

AEO Checker evaluates your site across three categories: AI Discoverability (robots.txt, llms.txt, sitemap, AI crawler access), Content Structure (schema markup, meta quality, headings, content organization), and AI Citability (paragraph clarity, factual density, structured lists, statistical data). Each category contributes to a total score out of 100, with specific point values assigned to over 30 individual checks.

How can I improve my AEO score?

The fastest way to improve your score is to install aeo.js, which automatically generates llms.txt, robots.txt with AI crawler rules, structured data, and per-page markdown files. For content improvements, focus on writing clear paragraphs that directly answer questions, including specific data points and statistics, using structured lists, and adding JSON-LD schema markup to your pages.

Is AEO Checker free to use?

Yes, AEO Checker is completely free and open-source. No account or signup is required. You can scan unlimited websites and receive detailed reports with actionable recommendations. The tool is built with aeo.js, an open-source Answer Engine Optimization library available on npm.

Ready to check your site?

Join thousands of websites optimizing for the AI search era.