AI Scan My Site
Run Scan Now
FREE INSTANT AI SEO & TECHNICAL WEBSITE AUDIT

Free AI SEO Checker & Technical Website Grader

Check if your website is optimized for both Google Search and AI engines (ChatGPT, Gemini, Perplexity). Inspect robots.txt, schema entity graphs, llms.txt manifests, and PageSpeed in 10 seconds.

100% Free Audit
No Credit Card Required
Instant Results

What Does the Free AI SEO Audit Inspect?

Our 12-point scanner verifies every technical layer necessary for maximum search visibility and AI citation readiness.

AI Bot Accessibility

Verifies whether GPTBot, PerplexityBot, ClaudeBot, and Google-Extended are allowed or blocked in your robots.txt.

llms.txt Context Validation

Checks for the presence and structural syntax of your llms.txt file to help LLMs digest your brand context.

Google PageSpeed & Vitals

Evaluates Core Web Vitals (LCP, CLS, INP) and frontend loading speed required for top Google search rankings.

Frequently Asked Questions

Everything you need to know about AI SEO audits and website grading.

An AI SEO Checker evaluates your website against both traditional Google search ranking factors and modern artificial intelligence engines (like ChatGPT, Gemini, Claude, and Perplexity). It inspects technical SEO, robots.txt bot rules, schema entity graphs, page speed, and llms.txt context manifests.

Comprehensive Guide: How Free AI SEO Audits Elevate Search & LLM Visibility

In the modern search landscape, web optimization is no longer restricted to traditional Google desktop and mobile crawlers. Next-generation artificial intelligence platforms—including OpenAI's ChatGPT, Anthropic's Claude, Perplexity AI, and Google Gemini—actively crawl, summarize, and cite web pages in conversational answer engines. An AI SEO Audit evaluates your domain across both traditional technical search requirements and emerging Answer Engine Optimization (AEO) protocols.

1. What Is an AI SEO Audit & How Does It Differ From Traditional SEO?

Traditional Search Engine Optimization (SEO) primarily focuses on optimizing HTML elements for Googlebot, accumulating external backlinks, and targeting specific search queries to earn blue-link rankings on Search Engine Result Pages (SERPs). While these factors remain essential, AI-driven search engines process information differently:

  • Direct Entity Extraction: Large Language Models (LLMs) parse structured semantic entity graphs (such as JSON-LD Schema) to understand brand offerings directly without guessing.
  • RAG (Retrieval-Augmented Generation): When a user asks ChatGPT or Perplexity a question, the AI performs a real-time web fetch, extracts precise text passages, and cites authoritative sources.
  • Protocol Accessibility: AI crawlers look for explicit directives in robots.txt and context manifests like llms.txt to ingest site structure cleanly.

2. Understanding AI Crawler Permissions in robots.txt

One of the most frequent reasons websites are missing from ChatGPT or Perplexity search results is accidental blocking of dedicated AI user-agents in robots.txt. Our free AI SEO checker inspects your server directives for the following major user-agents:

GPTBot & ChatGPT-User

Operated by OpenAI. GPTBot handles offline model training, while ChatGPT-User performs real-time live browsing fetches during user chats.

PerplexityBot

Used by Perplexity AI to index web pages, extract factual citations, and answer real-time conversational search queries.

ClaudeBot

Anthropic's web crawler that reads online context for Claude 3.5 Sonnet and future model iterations.

Google-Extended

Google's specific token for Gemini model training. Note: Blocking Google-Extended does not block standard Googlebot search indexing.

3. The Power of llms.txt Context Manifests

Proposed as an open standard for AI readability, an llms.txt file is a lightweight Markdown document placed at the root of your domain (e.g., https://yourdomain.com/llms.txt). It provides LLMs with a clean, unbloated summary of your website's key pages, documentation, pricing model, and brand identity.

By serving a valid llms.txt file, you reduce token consumption for AI agents while ensuring they extract accurate, uncorrupted facts about your business.

4. Technical Performance & Core Web Vitals (LCP, CLS, INP)

Search engine crawlers and real human users demand lightning-fast page loading speeds. Our AI website grader tests your domain against official Google PageSpeed Core Web Vitals:

  • Largest Contentful Paint (LCP): Measures main content loading speed. Target: under 2.5 seconds.
  • Interaction to Next Paint (INP): Replaced FID as a key responsiveness benchmark. Target: under 200 milliseconds.
  • Cumulative Layout Shift (CLS): Measures visual layout stability during page load. Target: under 0.1.

5. Step-by-Step Checklist to Improve Your Website AI SEO Rating

  1. Run a Free Audit: Enter your domain into the AI Scan My Site tool above to get an instant breakdown of your technical health score.
  2. Update robots.txt: Verify that AI crawlers like GPTBot are set to Allow: /.
  3. Implement Structured Data: Add Organization, WebSite, and WebApplication JSON-LD schemas to your HTML <head>.
  4. Deploy llms.txt: Create a concise Markdown overview at your domain root detailing your core products and contact channels.
  5. Optimize Page Speed: Compress images to WebP/AVIF formats and eliminate render-blocking scripts to pass Core Web Vitals.