Technical13 September 2026 · 3 min read
llms.txt: what it does, and what it doesn't
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Give AI tools a clean map of your best pages in under a minute. Enter your site or sitemap and we'll draft an llms.txt: your name and summary, then your most useful pages grouped into sections, each with its own description. Edit it here, check it against the format as you type, then upload it to your site root.
llms.txt is a proposed standard: a Markdown file at the root of your site that gives AI tools a short, curated map of your most useful pages. Jeremy Howard of Answer.AI proposed it in September 2024. It starts with an H1 of your site's name, a one-line summary in a blockquote, then sections of links with a short description each.
# Acme
> Acme makes quiet, fast-boiling kettles for offices and cafés.
Prices are in GBP and include delivery in the UK.
## Products
- [Office kettle](https://acme.com/office-kettle): 10-litre urn for teams of 20+
- [Café kettle](https://acme.com/cafe-kettle): commercial kettle with a two-year warranty
## Help
- [Delivery and returns](https://acme.com/delivery): delivery times and how to return
## Optional
- [Privacy policy](https://acme.com/privacy)When you generate a draft, we also fetch the llms.txt already on your site and check it: whether it's Markdown or an HTML page your server sends by mistake, whether it's served as plain text, and whether it follows the format. The Validate tab checks any file you paste, and the draft is checked live as you edit it.
| File | What it does | Who reads it |
|---|---|---|
| robots.txt | Tells crawlers what they may fetch | Every well-behaved crawler, before it fetches anything |
| sitemap.xml | Lists every page you want indexed, with when it changed | Search engines and AI crawlers finding pages |
| llms.txt | Points AI tools at your most useful pages, in Markdown they can read directly | AI coding assistants and agents; no major search engine commits to it |
Listing a page in llms.txt doesn't unblock it in robots.txt. If a crawler is blocked there, fix that first: our AI visibility checker tests both.
10 to 50 links suits most sites. It's a guide for a newcomer, not a second sitemap.
| Platform | Where it goes |
|---|---|
| Any web server or static host | The web root, next to robots.txt |
| Next.js | public/llms.txt, or a route handler at app/llms.txt/route.ts if you want to build it from your content |
| WordPress | The folder that holds wp-config.php, via SFTP or your host's file manager. Some SEO plugins, including Yoast, can generate one |
| Cloudflare Pages or Workers | Your static assets folder, so it's deployed at the root |
| Shopify, Webflow, Wix, Squarespace | These builders limit files at the root. Use the platform's own llms.txt setting or an app if there is one, or a redirect from /llms.txt to the file hosted elsewhere |
Some documentation platforms also generate llms-full.txt, a single file holding the full text of every page. It isn't part of the proposal, which instead suggests offering a clean Markdown copy of individual pages at the same URL with .md appended. For most business sites, a short llms.txt is enough.
No. Google has said Search ignores it, and ChatGPT, Claude and Perplexity haven't said they use it. It's still worth the ten minutes: AI coding tools and agents do read it, and choosing the pages forces you to decide which ones really explain your business. More in llms.txt: what it does, and what it doesn't.
The draft is a starting point. The file is most useful when it's short and chosen by someone who knows the site: keep the pages that explain what you do, what it costs and how it works, rewrite the summary in plain words, and remove anything a newcomer wouldn't need.
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Check your site's robots rules, homepage signals and llms.txt. These checks do not measure citations in AI answers.
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