What is llms.txt?
llms.txt is a proposed standard for a machine-readable file that tells AI language models what a website or business does. Think of it as the new robots.txt — but instead of telling search engine crawlers which pages to index, it tells AI systems what your business does, who you serve, and what content is authoritative.
The file lives at your domain root: yourdomain.com/llms.txt. It’s plain text, structured in a specific format, and designed to be parsed efficiently by AI crawlers and language models.
Why llms.txt Matters for AI Visibility
AI systems that crawl the web use llms.txt to understand your business context before diving into individual pages. A well-crafted llms.txt file can:
- Reduce ambiguity about what your business does
- Surface your most authoritative content first
- Clarify your entity identity (business name, services, location)
- Indicate which content is intended for AI citation
- Speed up AI indexing by providing structured context upfront
llms.txt File Format
A standard llms.txt file follows a specific Markdown-based structure:
# Business Name > Brief description of what your business does (1-2 sentences) ## About A longer description of your business, services, and who you serve. ## Services - Service 1: Brief description - Service 2: Brief description ## Key Pages - [Homepage](https://yourdomain.com/): Main business page - [Services](https://yourdomain.com/services/): Service overview - [About](https://yourdomain.com/about/): About the business - [Contact](https://yourdomain.com/contact/): Contact information ## Optional - [Terms of Service](https://yourdomain.com/terms/) - [Privacy Policy](https://yourdomain.com/privacy/)
Free llms.txt Generator Tools
Several free tools can generate a basic llms.txt file for you:
llms-txt.io
Simple generator — enter your domain and it creates a basic llms.txt from your existing content.
Firecrawl llms.txt Generator
Crawls your site and generates an llms.txt with key pages and descriptions automatically.
WordLift
Generates llms.txt alongside structured data — useful if you’re implementing schema at the same time.
Why llms.txt Alone Isn’t Enough
Here’s the honest picture: llms.txt is a useful signal, but it’s not the primary factor in AI visibility. AI systems don’t rely only on llms.txt to find and recommend businesses. They also evaluate:
- Schema markup and structured data — the primary language AI reads
- Entity consistency — how consistently your business is represented across the web
- Content architecture — whether your content is structured for answer extraction
- Citation patterns — whether other authoritative sources reference your business
- Platform-specific signals — each AI platform weights signals differently
A business with perfect structured data but no llms.txt will outperform a business with only an llms.txt file in almost every case. Deploy llms.txt — but don’t stop there.
What Comes After llms.txt
Once you have llms.txt deployed, the next priorities are:
Audit Your AI Visibility
Find out where you actually stand across ChatGPT, Perplexity, Gemini, and Google AI. An AI Visibility Audit shows you the full picture — not just whether llms.txt is deployed.
Implement Structured Data
Schema markup is the foundation. Organization, Service, FAQPage, LocalBusiness schemas — the technical signals that tell AI exactly what your business does.
Fix Entity Consistency
Your business name, address, and service descriptions need to be identical everywhere. Inconsistency creates ambiguity AI avoids.