# LLCrawler — LLM Visibility Analyzer > LLCrawler (llcrawler.com) is a free tool that analyzes any website and scores how visible it is to LLM-powered search engines like ChatGPT, Claude, Perplexity, and Gemini. It produces an actionable report in 30 seconds with a score out of 100 and prioritized fixes. ## What LLCrawler does LLCrawler crawls your homepage and evaluates six categories that determine whether AI models can find, understand, and cite your site: 1. **Structured data** — JSON-LD presence, relevant schema types (Organization, Product, Article, FAQPage, WebSite, BreadcrumbList) 2. **Content structure** — Single H1, FAQ sections, lists and tables, sufficient body text 3. **Meta and social** — Meta description length, Open Graph completeness, Twitter cards 4. **Performance** — Mobile Lighthouse score, viewport meta tag 5. **AI readiness** — /llms.txt file depth and richness, /llms-full.txt presence, GPTBot and ClaudeBot allowed in robots.txt, content visible without JavaScript, image alt text coverage 6. **Sitemap** — Valid sitemap.xml, declared in robots.txt, lastmod coverage, same-host URLs ## Who should use LLCrawler - Founders and indie hackers launching SaaS products who need ChatGPT and Claude to recommend them - SEO specialists adapting strategies for AI-powered search - Content and marketing teams who want articles cited by LLMs - Local businesses and e-commerce stores that depend on AI assistant recommendations - Any website owner who wants to understand their AI search visibility ## How to use it 1. Visit [llcrawler.com](https://llcrawler.com) 2. Paste any URL into the analyzer 3. Receive a shareable report in ~30 seconds with a score out of 100 4. Each issue includes a concrete fix — start with criticals, then improvements No signup required. Free accounts unlock history and weekly monitoring. ## Key features - **Free analysis** — No credit card, no signup required - **Bilingual** — Full English and Spanish support - **Shareable reports** — Every report has a public URL - **Embeddable badge** — shields.io-style badge for GitHub READMEs - **Auto-generated llms.txt** — If your site is missing /llms.txt, LLCrawler generates one from your crawl data - **Contextual recommendations** — Tool suggestions based on detected issues ## Links - [Homepage](https://llcrawler.com) - [Blog](https://llcrawler.com/blog) - [Privacy policy](https://llcrawler.com/privacy) - [Terms of service](https://llcrawler.com/terms) - [Full documentation](https://llcrawler.com/llms-full.txt)