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What Is llms.txt and Why Do I Need It?
The simple file that makes your site AI‑ready.
llms.txt is a plain text file that provides a high‑level overview of your website for large language models (LLMs). It helps AI engines like ChatGPT and Claude understand your content structure and improve citation.
1
File to create
10
Lines recommended
30s
Audit duration
100%
Free always
Key Findings
1. What Is llms.txt?
llms.txt is a simple text file that gives AI models a summary of your website. It's like a sitemap but for AI, helping them decide when to cite you. It was proposed by Jeremy Howard and is gaining adoption.
2. Why You Need llms.txt
AI search engines (like ChatGPT, Perplexity) often look for llms.txt to quickly understand your site. Without it, they may overlook your content. Having this file increases your chances of being cited.
3. How to Create llms.txt
Simply create a text file named "llms.txt" in your root directory. Include your site name, a brief description, key sections, and important URLs. Keep it under 10 lines if possible.
- Place it in your root (e.g., example.com/llms.txt)
- Use plain text, no markdown
- Include your site name, tagline, and main sections
- Optionally list key pages or content types
⚠️ The Problem
Without llms.txt, AI models may overlook your content
- No llms.txt – AI doesn't know your site structure
- No easy way for LLMs to summarise your content
- Missed opportunities for AI citation
- Reduced visibility in AI search results
✅ NakedURL Solution
NakedURL checks for llms.txt and verifies its presence
- Instant llms.txt detection
- Confirmation of file existence
- GEO score contribution for having it
- Recommendation to create it if missing
Key Features
llms.txt detection
Checks if the file exists in your root directory.
Pass/fail status
Clear indication whether llms.txt is present.
AI readiness
llms.txt is a key part of your GEO score.
Best practices
Tips on what to include in your llms.txt.
I put llms.txt in my root, but NakedURL doesn't detect it. Why?
Check the file name and location. It must be exactly `llms.txt` (lowercase) in your public root directory. Also, ensure it's accessible via `https://yourdomain.com/llms.txt`. NakedURL will detect it if it's publicly accessible.
Frequently Asked Questions
What is NakedURL and how does it work?
NakedURL is a free SEO and GEO audit tool that checks 60+ metrics on any website. It analyses meta tags, readability, backlinks, structured data, AI readiness, and more – all in under 30 seconds.
Is NakedURL really free?
Yes. NakedURL is completely free with no sign‑up or credit card required. You get full access to all 60+ checks and insights.
How can I use AI to improve my SEO?
Run an audit, then copy the recommendations and paste them into your preferred LLM (ChatGPT, Claude, etc.) with a prompt asking for specific code or content changes for your framework.
How long does the audit take?
Most audits complete in 10‑30 seconds. The time depends on your server speed and the complexity of your site.
Do I need to create an account?
No. NakedURL requires no registration. Just enter a URL and get your report instantly.
What is GEO and why does it matter?
GEO (Generative Engine Optimization) optimises your content for AI search engines like ChatGPT and Perplexity. It involves llms.txt, question headings, FAQ schema, and allowing AI bots.