# llmtxt.info

> A multilingual reference to the llms.txt proposal: explanations, practical guides, a browser validator, a draft generator and dated public-file observations.

Independent reference site. The current proposal is v2, modified 2026-08-10; this editorial index was reviewed on 2026-09-07. A published file or a successful structural check does not establish model use, search visibility or content quality.

Links prefer the generated Markdown versions of the actual site pages. The HTML page remains canonical. Locale indexes describe their own path; the root index gives a curated overview. The full Markdown inventory is /markdown-pages.json.

## Foundations

- [What is llms.txt](https://llmtxt.info/what-is-llms-txt/index.md): definition, origin, and 2026 adoption status.
- [How it works](https://llmtxt.info/how-it-works/index.md): file structure, syntax, and parsing rules.
- [Comparison](https://llmtxt.info/comparison/index.md): llms.txt vs robots.txt vs sitemap.xml vs llms-full.txt.
- [Benefits and limitations](https://llmtxt.info/benefits-limitations/index.md): what it does and does not do.
- [Does llms.txt work?](https://llmtxt.info/does-llms-txt-work/index.md): evidence by use case, AI citations, SEO, developer tooling.
- [Does Google use llms.txt?](https://llmtxt.info/does-google-use-llms-txt/index.md): Google Search documentation and the limits of claims about llms.txt support.
- [Does ChatGPT use llms.txt?](https://llmtxt.info/does-chatgpt-use-llms-txt/index.md): What provider documentation establishes, what users can supply, and what remains unverified.
- [What is llms-full.txt](https://llmtxt.info/llms-full-txt/index.md): the full-content companion file explained.
- [llms.txt and SEO](https://llmtxt.info/llms-txt-seo/index.md): what it does and does not do for search rankings and GEO.

## Build guide

- [The llms.txt file](https://llmtxt.info/llms-txt-file/index.md): location, format, valid example, common mistakes.
- [State of llms.txt adoption 2026](https://llmtxt.info/blog/state-of-llms-txt-2026/index.md): Dated measurements from a fixed panel; scope and limitations are stated in the article.
- [How to create llms.txt](https://llmtxt.info/how-to-create/index.md): templates and per-stack deployment.
- [Best practices](https://llmtxt.info/best-practices/index.md): ten rules and common mistakes.
- [Examples](https://llmtxt.info/examples/index.md): 43 public files rechecked on 2026-09-06 with no structural errors detected. llmtxt.info first; visitor suggestions by email for review.
- [llms.txt for Cloudflare Pages](https://llmtxt.info/llms-txt-cloudflare/index.md): static output directory, Pages Function, or Workers, with cache header guide.
- [llms.txt for Vercel](https://llmtxt.info/llms-txt-vercel/index.md): static public/ file, Next.js Route Handler, or Vercel Edge Function.
- [llms.txt for Next.js](https://llmtxt.info/llms-txt-nextjs/index.md): static file or Route Handler, two approaches.
- [llms.txt for WordPress](https://llmtxt.info/llms-txt-wordpress/index.md): FTP upload, functions.php rewrite, or .htaccess redirect.
- [llms.txt for Astro](https://llmtxt.info/llms-txt-astro/index.md): static public/ file or TypeScript endpoint with getCollection().
- [llms.txt for SvelteKit](https://llmtxt.info/llms-txt-sveltekit/index.md): static static/ file or +server.ts endpoint, works with all adapters.
- [llms.txt for Hugo](https://llmtxt.info/llms-txt-hugo/index.md): static/ file or custom output format with Go template.
- [llms.txt for Express.js](https://llmtxt.info/llms-txt-express/index.md): Node.js/Express route handler or express.static() middleware.
- [llms.txt for Laravel](https://llmtxt.info/llms-txt-laravel/index.md): place in public/ or add a route in routes/web.php.
- [llms.txt for headless CMS](https://llmtxt.info/llms-txt-cms/index.md): generate from Contentful, Sanity, or Strapi at build time.

## Tools

- [Validator](https://llmtxt.info/validator/index.md): Pasted text is parsed in the browser; public URL retrieval uses a Cloudflare function. Reports structural errors and warnings.
- [Generator](https://llmtxt.info/generator/index.md): Prepare a draft from a form or public sitemap. Review the selected links and descriptions before publishing.
- [How to find a site's llms.txt](https://llmtxt.info/how-to-find-llms-txt/index.md): see any website's llms.txt and llms-full.txt, with fallbacks.

## Reference

- [FAQ](https://llmtxt.info/faq/index.md): twenty straight answers.
- [Glossary](https://llmtxt.info/glossary/index.md): AEO, GEO, RAG, MCP, REP, and the rest.
- [llms.txt format reference](https://llmtxt.info/llms-txt-format/index.md): Current format requirements, recommendations, annotated examples and diagnostics.

## Trust and data

- [Methodology](https://llmtxt.info/methodology/index.md): fixed-panel scope, qualification rules, source hierarchy and limits.
- [Observatory](https://llmtxt.info/observatory/index.md): dated fixed-panel measurement, v2 observations and raw downloads.
- [Detecting llms.txt files: study with Firecrawl](https://llmtxt.info/observatory/firecrawl-llms-txt-2000-domains/index.md): 2,000 domains observed on 2026-09-02; 192 recognized files, HTTP response categories, method and classification limits. Separate from the recurring Observatory panel.
- [Compatibility matrix](https://llmtxt.info/compatibility/index.md): evidence classes for files, discovery relations and client claims.
- [Editorial policy](https://llmtxt.info/editorial-policy/index.md): source labels, independence and disclosure rules.
- [Changelog](https://llmtxt.info/changelog/index.md): dated releases for data, tools and method.
- [Corrections ledger](https://llmtxt.info/corrections/index.md): public record of material factual corrections.
- [Public verification](https://llmtxt.info/verify/index.md): live response receipt with a timestamp and validator version.
- [Observatory release JSON](https://llmtxt.info/observatory.json): machine-readable snapshot, source hash and limitations.

## Blog

- [Search Console AI report](https://llmtxt.info/blog/search-console-ai-report/index.md): Report scope, unavailable values in exports, a reusable tracking template and the limits of attributing visibility to llms.txt.
- [Blog](https://llmtxt.info/blog/index.md): articles on llms.txt, GEO, AI crawlers, and LLM optimization.
- [llms.txt vs robots.txt](https://llmtxt.info/blog/llms-txt-vs-robots-txt/index.md): key differences between the two files.
- [What is GEO?](https://llmtxt.info/blog/what-is-geo/index.md): generative engine optimization explained.
- [llms.txt best practices 2025](https://llmtxt.info/blog/llms-txt-best-practices-2025/index.md): practical DO/DON'T guide.
- [AI crawlers explained](https://llmtxt.info/blog/ai-crawlers-explained/index.md): intent, identity, evidence, and what a request to llms.txt can prove.
- [llms.txt for API products](https://llmtxt.info/blog/llms-txt-for-api-products/index.md): a developer's guide.
- [llms-full.txt guide](https://llmtxt.info/blog/llms-full-txt-guide/index.md): The optional full-text companion convention and practical usage.
- [Measure llms.txt impact](https://llmtxt.info/blog/measure-llms-txt-impact/index.md): track AI referral traffic and citations.
- [llms.txt for documentation sites](https://llmtxt.info/blog/llms-txt-documentation-sites/index.md): structure for AI readability.
- [No AI agent goes looking for your llms.txt](https://llmtxt.info/blog/agents-do-not-look-for-llms-txt/index.md): Analysis of a published study, including the dataset scope and the limits of its conclusions.

## Practical guides: original English and French articles

- [Test HTML and Markdown delivery through your cache](https://llmtxt.info/blog/markdown-cache-representation-testing/index.md): Check whether your CDN serves the intended HTML and Markdown representations. A practical test matrix for explicit URLs, negotiation and cache validation.
- [Versioned docs: keep language and API release separate](https://llmtxt.info/blog/versioned-documentation-language-routing/index.md): Design llms.txt links for multilingual, versioned documentation without sending readers to the wrong API release or treating unrelated pages as translations.
- [HTML et Markdown : vérifier la parité avant publication](https://llmtxt.info/fr/blog/recette-parite-html-markdown/index.md): Préparez une recette de parité entre HTML et Markdown : faits, liens, dates et règles métier. Une méthode pour publier un llms.txt cohérent et vérifiable.
- [llms.txt : décider quelles données rendre publiques](https://llmtxt.info/fr/blog/llms-txt-politique-publication-donnees/index.md): Distinguez les ressources publiques utiles des données à exclure de llms.txt. Préparez une politique de publication vérifiable sans exposer de données clients.

## Languages

- [Français](https://llmtxt.info/fr/llms.txt): Index of available Français pages.
- [Deutsch](https://llmtxt.info/de/llms.txt): Index of available Deutsch pages.
- [Español](https://llmtxt.info/es/llms.txt): Index of available Español pages.
- [Italiano](https://llmtxt.info/it/llms.txt): Index of available Italiano pages.
- [Русский](https://llmtxt.info/ru/llms.txt): Index of available Русский pages.
- [العربية](https://llmtxt.info/ar/llms.txt): Index of available العربية pages.
- [简体中文](https://llmtxt.info/zh/llms.txt): Index of available 简体中文 pages.
- [日本語](https://llmtxt.info/ja/llms.txt): Index of available 日本語 pages.

## Source and complete inventory

- [Official llms.txt proposal](https://llmstxt.org/): Canonical format proposal, v2.
- [Curated full reference](https://llmtxt.info/llms-full.txt): Explanations, current published observations, source links and limitations.
- [Markdown page inventory](https://llmtxt.info/markdown-pages.json): Complete list of generated page alternates.