Tools
Free AI visibility tools
These tools run without calling an AI model, so they are free to use as often as you like — unlike the full scan, which queries up to four real AI engines at ~$0.04 per answer.
Each checker explains what the signal means, what it does not prove, and how to verify a fix. Use them to audit your site's AI-visibility readiness in minutes before running a full scan.
Quick answer: which tool should you use?
Check crawler access first, then validate llms.txt and schema markup. These checks verify whether AI systems can discover and understand your site; a full VisiScan measures whether they actually recommend your business.
Why these signals matter for AI visibility
AI answer engines like ChatGPT, Claude, Perplexity, and Gemini discover and evaluate your business differently than traditional search engines. They rely on crawler access to read your pages, entity signals like schema markup to understand who you are, and machine-readable files like llms.txt to navigate your content efficiently.
If your site blocks discovery crawlers, lacks structured data, or does not publish an llms.txt file, AI engines have less information to work with — and a competitor with these signals in place is more likely to be named in answers instead of you.
Each tool below checks one of these signals instantly. Fix what it flags, then run a full VisiScan to measure whether AI engines actually name your business when buyers ask.
- AI Visibility Scanner
Run a free scan to see whether ChatGPT, Claude, Perplexity, and Gemini mention, cite, or recommend your business.
- AI Crawler Access Checker
See whether OpenAI, Perplexity, Google, and Bing discovery crawlers can reach your public pages.
- llms.txt Checker
Check whether your site publishes a valid, useful llms.txt file.
- llms.txt Generator
Build an llms.txt file for your site from the pages you already publish, with the gaps named rather than guessed.
- Schema Markup Checker
Check for LocalBusiness, Organization, FAQPage, and Service schema markup.
Questions
Tool questions, straight.
Are these tools really free?
Yes. Each checker runs locally against your site without calling an AI model, so there is no per-use cost and no rate limit. They complement the paid scan, which queries up to four real answer engines.
What does the AI crawler checker actually test?
It checks whether discovery crawlers from OpenAI, Perplexity, Google, and Bing can reach your public pages, so AI engines can read your content in the first place.
What is llms.txt and do I need one?
llms.txt is a machine-readable pointer that tells AI engines which pages matter and how to reference your business. The checker confirms it exists and is valid; VisiScan's full report can generate one for you.
Which schema types does the schema checker look for?
It checks for LocalBusiness, Organization, FAQPage, and Service schema markup — the entity signals that help answer engines understand who you are and what you offer.
Should I run a tool or a full scan first?
Run a tool to confirm your site is crawlable and structured correctly, then run a full VisiScan to measure whether AI engines actually name your business when buyers ask.