What Is llms.txt?
llms.txt is a plain text file placed in your website's root directory (/llms.txt) that provides a structured description of your site's content specifically for AI language models (LLMs) and AI search crawlers. Its role is similar to robots.txt, but the audience shifts from traditional search engine crawlers to AI systems.
Core purposes:
- Tell AI crawlers which pages contain your core content
- Describe your site's main topics and scope of coverage
- Indicate which content can be cited or trained on by AI
- Provide a structured entry point for site navigation
The Standard llms.txt Format
# Website Name
> A short description of the website (1-2 sentences)
## Core Content
- [Page Title](URL): Page description
Why Do You Need llms.txt?
AI engines face several challenges when trying to understand a website: irrelevant content such as navigation, ads, and footers takes up a large amount of space; JavaScript-rendered dynamic content is invisible to AI crawlers; and content is scattered, making it hard for AI to determine what counts as core information.
How Major AI Systems Support llms.txt
| AI System | Support Status |
|---|---|
| Anthropic Claude | Officially supported |
| Perplexity AI | Crawled |
| ChatGPT | Partial support |
| Google Gemini | Experimental support |
How to Generate llms.txt Quickly
Visit our llms.txt generator, enter your website URL, and it will automatically scan your site's content and produce a standard-format file in 30 seconds.
Frequently Asked Questions (FAQ)
Q: Does llms.txt affect traditional Google rankings? A: No. llms.txt is designed specifically for AI systems and has no impact on Google's traditional search crawlers.
Q: Will AI still cite my website if I don't have an llms.txt? A: Yes, but the likelihood is lower and accuracy may decline.
Conclusion
llms.txt is one of the lowest-cost, fastest-acting GEO optimization moves available. Use our free generator to create one for your website today — the whole process takes less than 5 minutes.