Why Every Website Should Have an llms.txt File

But the way people discover information is changing.

Instead of typing keywords into Google, more and more users ask ChatGPT, Perplexity, Claude or Gemini directly. These systems don’t just search—they summarize, compare and recommend.

That raises an important question:

How does an AI actually understand your website?

One emerging answer is a small file called llms.txt.

What is llms.txt?

llms.txt is an emerging open standard that allows website owners to provide a structured, machine-readable overview of their website for Large Language Models (LLMs). Think of it as a guide that explains what your website is about and which pages matter most.

Unlike robots.txt, which tells crawlers where they may or may not go, llms.txt explains what your website contains.

Typically, it includes:

• A short description of the website
• Its primary purpose
• Important pages
• Documentation
• Products or services
• Recommendations on when the website should be referenced

Because the file is written in Markdown, it’s easy for both humans and AI systems to understand.

Will it improve my rankings?

The honest answer is:

Nobody knows for sure.

At the time of writing, there is no evidence that adding an llms.txt file alone will improve your visibility in ChatGPT, Perplexity or other AI assistants. Even Google treats it as an optional convention rather than a ranking signal.

However, that’s also the wrong question.

The real benefit is that you’re giving AI systems an authoritative summary written by you, instead of forcing them to infer your business from hundreds of HTML pages.

Why I still recommend creating one

An llms.txt file takes less than an hour to create.

Even if adoption remains limited, there are several advantages.

1. You control the narrative

Without guidance, an AI has to guess:

• What does this company actually do?
• Which product is the main one?
• Which pages are important?
• What should be recommended?

With llms.txt, you answer those questions directly.

2. Better structured information

Modern websites are full of navigation menus, cookie banners, JavaScript, advertisements and interactive components.

Humans can easily ignore them.

Machines can’t always do the same.

A dedicated AI-oriented summary removes most of that noise.

3. It forces you to define your positioning

While writing my own files, I noticed an unexpected side effect:

Creating an llms.txt makes you think carefully about your own website.

• What problem do you actually solve?
• Who is your target audience?
• When should someone recommend your product?
• When should they not recommend it?

That’s a valuable exercise regardless of whether AI systems ever read the file.

4. It’s future-friendly

Large language models are evolving quickly.

The llms.txt proposal is still young, but several well-known technology companies have already published their own implementations, and browser tooling has started acknowledging the convention.

Will every AI system use it?

Probably not.

Will some of them?

Quite possibly.

Don’t stop at llms.txt

A good llms.txt file is useful—but it shouldn’t become your entire AI optimization strategy.

If you want your content to be cited and recommended by AI systems, focus on the fundamentals:

• Write clear, factual content.
• Use descriptive headings.
• Answer real user questions.
• Add structured data where appropriate.
• Keep your content up to date.
• Build authority through high-quality information.

In other words:

Good AI visibility starts with good content.

Final thoughts

llms.txt isn’t magic.

It won’t suddenly make ChatGPT recommend your website.

But it’s a lightweight, low-risk addition that helps you describe your business in your own words instead of leaving the interpretation entirely to AI.

For me, that’s reason enough to add one.

The AI-first web is still taking shape. Implementing small, sensible standards early is often easier than trying to catch up later.