llms.txt checker

What is llms.txt?

llms.txt is a proposed standard: a short Markdown file at the root of a website (/llms.txt) that tells AI assistants what the site is about and which pages matter most. It’s optional and still emerging, but it takes minutes to add.

A valid file starts with the site name as a # heading, can include a one-line > summary, then lists the key pages as Markdown links, optionally grouped under ## sections. For example:

# example.com

> One sentence about what the business does and who it’s for.

## Services
- [Web design](https://example.com/services/web-design): what’s included and pricing
- [SEO](https://example.com/services/seo): audits and ongoing work

## Company
- [About](https://example.com/about)
- [Contact](https://example.com/contact)