# LLMsite.org

> The open standard for LLM-optimized websites.

LLMsite defines a lightweight set of principles and requirements that make websites easy for Large Language Models to read, index, cite, and trust. It complements existing web standards (HTML semantics, Schema.org, robots.txt) with LLM-specific guidance.

## Specification

The LLMsite standard v0.1 covers six areas:

1. **llms.txt** — A plain-text file at the site root describing the site for LLMs (this file).
2. **Semantic HTML** — Meaningful markup using article, section, nav, header, footer, and proper heading hierarchy.
3. **Structured Metadata** — Descriptive titles, meta descriptions, canonical URLs, and Schema.org JSON-LD.
4. **Content Clarity** — One topic per page, leading with answers, using lists and tables, dating content.
5. **Crawl-Friendly Architecture** — Static/SSR HTML, fast TTFB, clean URLs, XML sitemaps.
6. **Provenance & Trust** — Authorship, publication dates, source links, version history.

## Pages

- [Home](https://llmsite.org/): Overview of the standard, full specification, compliance checklist, and FAQ.

## Context

- Version: 0.1
- Published: 2026-03-26
- License: Open standard, free to implement
- Maintainer: LLMsite community