llms.txt Generator & Validator
Check whether a site has /llms.txt and whether it follows the llmstxt.org format, or build a draft from the sitemap: name, summary and sections linking to key pages.
File contents
What the validator checks
- Structure per llmstxt.org: the H1 name on the first line, a “>” blockquote summary, optional paragraphs, ## sections with link lists and the special ## Optional section.
- Each item’s format “- [Name](URL): description”: link parsing, empty text or URL, relative and http links, duplicates, the description separator. Links are checked by format only — we do not crawl them.
- For a live file, also the status code, redirects, Content-Type and charset, HTML instead of text (a common SPA issue) and whether llms-full.txt exists next to it.
- Errors break the format, warnings are worth fixing, notes are recommendations. Publishing llms.txt does not guarantee AI services will read it: it is a proposed standard, not a platform commitment.
Datos clave
llms.txt is a community-proposed Markdown file in the site root that gives language models a short summary and links to key pages. Enter a domain: we check the file and, if missing, build a draft from the homepage and sitemap. It is a proposal, not an adopted standard, and nothing guarantees it affects AI answers.
- Precio
- Gratis
- Registro
- No necesario
- Procesamiento
- Partly on our server: checking and generation fetch your site from our server (public addresses only), while the draft and the editor run in your browser
- Entrada
- A domain to check or generate for, or llms.txt text in the editor
- Límites
- No sign-up; checks up to 10 per minute and 15 per day (45 after sign-in), generation 3 per 2 minutes and 10 per day (30 after sign-in), no daily limit for Pro; llms.txt is read up to 1 MB and the draft includes up to 30 pages
- Resultado
- A structure report for llms.txt (title, summary, sections, links, Optional), whether llms-full.txt exists, errors and warnings; a draft file with sections to copy or download
- Última actualización
Free llms.txt Generator and Validator
llms.txt is a Markdown file in the site root that briefly describes a project and lists links to its key pages so a language model can make sense of the site. The format was proposed at llmstxt.org in 2024. This tool checks the file on your site (status code, Content-Type, structure and the format of every link), builds a draft from the title and description of your homepage and up to 30 pages from sitemap.xml, and validates text live in the editor. Note: it is a proposed standard — major AI companies have not officially committed to using it.
Cómo usar
- On the Validate tab, enter a domain — the tool fetches https://domain/llms.txt and lists errors, warnings and the outline
- No file yet? Build a draft from your sitemap on the Generate tab and refine it in the editor
- Fix the issues, download llms.txt, upload it to the site root and run the check again
FAQ
PromoPilot frente a alternativas: comparación
Comparamos solo lo que está confirmado en las páginas de cada servicio. Donde no pudimos confirmar un dato, la celda muestra "—".
| Parámetro | PromoPilot | llmstxt.org (спецификация) | Firecrawl llms.txt Generator |
|---|---|---|---|
| Checks an existing llms.txt | ✓ | A format description, not a checker | — |
| Draft from sitemap and homepage | ✓ | ✗ | ✓ generates llms.txt from a site URL |
| Builds llms-full.txt | ✗ | ✗ | ✓ an llms-full.txt option in the interface |
| No API key needed | ✓ | — | ✗ full generation needs a Firecrawl API key; the page says the API is no longer maintained after 30 June 2025 |
Desplaza la tabla hacia los lados
Dónde somos más débiles: we do not build llms-full.txt, the draft holds at most 30 pages, and we do not read full page text, so descriptions need manual work.
Cuándo elegir PromoPilot: When you want to check an existing llms.txt against the format or quickly get a draft from the sitemap and edit it. For large sites and for llms-full.txt with full page text you need other tools.
Comprobado el: . "—" significa que no está confirmado en la página oficial; las condiciones y los precios cambian, así que consulta los sitios de cada servicio.