Is llms.txt an official standard?

Not yet. llms.txt is a community-proposed convention, not an IETF standard or an officially supported format by any specific AI provider. However, it has been widely adopted and AI engines are increasingly aware of it. Adding one costs nothing and aligns your site with an emerging best practice in AI visibility.

Does llms.txt replace schema markup?

No. Schema markup is structured data embedded in your HTML using a vocabulary maintained by Google, Microsoft, and others. It is a much stronger AI visibility signal with proven impact on citations. llms.txt is a complementary plain-text summary. You want both, but if you can only do one, schema markup first.

Do I need a developer to add llms.txt?

No. It is a plain text file placed in the root directory of your website. On most platforms you can create it yourself without writing code. If your site runs on a custom stack, ask your developer to add it at /llms.txt, it takes about five minutes.

What is llms.txt and why does it help AI engines find your business?

1 July 20263 min read

llms.txt is a simple text file you place at yourwebsite.com/llms.txt that tells AI language models who you are and what you do. It is not a ranking signal on its own, but it gives AI engines an accurate, machine-readable summary of your business before they parse your full site. Think of it as a business card for ChatGPT, Perplexity, and similar engines.

The idea behind llms.txt

When an AI engine accesses your website, it has to build an understanding of your business from HTML, structured data, and page content. That works, but it takes time and leaves room for misinterpretation.

llms.txt is a shortcut. It is a plain text file at the root of your site that says, in plain language: this is who we are, this is what we do, here are our services, here is how to reach us. The AI engine gets an accurate self-description of your business before it reads anything else.

How it differs from robots.txt

The two files look similar (both live at the root, both are plain text) but they do completely different things.

robots.txt controls access: it tells crawlers which pages they are allowed to read and which to skip. llms.txt provides context: it is what you actively want AI engines to know about you, written as clearly as possible. They are complementary, not competing.

robots.txt: access control. Allow or block crawlers from specific pages.
llms.txt: context. A plain-language summary of your business for AI engines.
Both live at the root of your site (/robots.txt and /llms.txt).
A well-configured robots.txt opens the door. A well-written llms.txt says who is inside.

What to put in llms.txt

Keep it short and factual. A good llms.txt covers your business name, a one-sentence description, your core services or products, your target market or location, links to key pages, and a contact address.

Use specific language, not marketing speak. 'We build Next.js websites with full schema markup, typically delivered in four to six weeks' is more useful to an AI engine than 'industry-leading custom web solutions'. The goal is accuracy, not persuasion.

Business name and a one-sentence description of what you do.
Core services or products, listed plainly.
Target market or location (especially important for local businesses).
Links to your most important pages (services, blog, tools, contact).
Your contact email.

How much does it actually help?

Honest answer: llms.txt is a hygiene factor, not the biggest lever for AI visibility. Schema markup (particularly Organization, FAQPage, and Service types) has significantly more proven impact on citation rates. Crawler access in robots.txt and strong, well-structured content both matter more.

That said, llms.txt is quick to add, has no downside, and ensures AI engines always have an accurate description of your business even before crawling individual pages. It is one part of a complete AI visibility foundation, not a shortcut that replaces the other parts.

How to check if you already have one

Visit yourwebsite.com/llms.txt in a browser. If you see a plain text file, you have one. If you get a 404, you do not. The free AI visibility tool checks this automatically as part of its score and will flag it if missing.

// frequently asked questions

Is llms.txt an official standard?: Not yet. llms.txt is a community-proposed convention, not an IETF standard or an officially supported format by any specific AI provider. However, it has been widely adopted and AI engines are increasingly aware of it. Adding one costs nothing and aligns your site with an emerging best practice in AI visibility.
Does llms.txt replace schema markup?: No. Schema markup is structured data embedded in your HTML using a vocabulary maintained by Google, Microsoft, and others. It is a much stronger AI visibility signal with proven impact on citations. llms.txt is a complementary plain-text summary. You want both, but if you can only do one, schema markup first.
Do I need a developer to add llms.txt?: No. It is a plain text file placed in the root directory of your website. On most platforms you can create it yourself without writing code. If your site runs on a custom stack, ask your developer to add it at /llms.txt, it takes about five minutes.

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