llms.txt
llms.txt is an emerging web standard — comparable to robots.txt — that provides structured information specifically for Large Language Models. The file resides in a website's root directory and describes the company, services, expertise, and contact details in a format that LLMs can process directly without parsing complex HTML.
Why does this matter?
AI crawlers like GPTBot and PerplexityBot scan your website to gather information for AI answers. An llms.txt file helps these crawlers correctly capture your brand, offerings, and unique selling points. Without clear structure, you risk AI engines misrepresenting your company or not mentioning it at all.
How IJONIS uses this
We create and maintain llms.txt as part of our GEO optimization: precise company description, service taxonomy, expertise signals, and regular updates. The file is combined with Schema.org markup and entity optimization to achieve maximum AI visibility.