Prepare your webshop for visibility in ChatGPT, Gemini, and other AI models
The world of online visibility is changing at lightning speed. While SEO was the key to search engine discoverability for years, a new playing field is emerging: GEO – Generative Engine Optimization. And one of the first concrete applications within this trend is llms.txt.
Although the concept is still new in 2025, it may soon become just as important as robots.txt once was. In this article, we explain what llms.txt is, how to use it, and why it is a strategic move for your webshop.
What is Generative Engine Optimization (GEO)?
With GEO, it is no longer just about discoverability in search results, but about mentions in responses from AI systems such as ChatGPT, Gemini, or Google SGE (Search Generative Experience).
Where SEO leads users to a website, GEO directly provides the answer — generated by AI based on available web information.
That makes GEO the next logical step in online marketing: making your brand or webshop visible within the answers provided by AI systems.
What exactly is llms.txt?
An llms.txt is a text file with which you help large language models (LLMs) – such as Gemini or ChatGPT – understand and use the right information from your website.
Unlike robots.txt, which instructs crawlers what not to index, you use llms.txt precisely to highlight the most valuable content. It is a kind of “AI spotlight” on your most important pages, products, or knowledge articles.
LLMs often struggle with complex HTML pages full of navigation, advertisements, or scripts. With an llms.txt, you offer a clean, textual version of your most important content, so AI models can faster and better understand what your brand stands for.
What do you include in llms.txt?
Not everything on your site is equally important for GEO. Focus on the content that contributes most to your brand, expertise, and authority. Consider:
Key category pages or product groups
Blogs and knowledge articles that demonstrate expertise
A brief, clear company introduction
Your unique selling points (USPs)
10–20 products that best represent your brand
Once you see results, you can expand with additional content or new product groups.
The structure of an llms.txt
Place the file in the root of your domain (e.g., www.yourdomain.com/llms.txt) and use a simple markdown structure, such as:
Tip: Don't forget the 's' – only llms.txt is recognized. See the llms.txt from Epartment here
Important considerations
Focus on content that truly adds value.
Use clear language and structure so AI understands the context.
Focus on reliability, expertise, and relevance.
Do not see llms.txt as an SEO trick, but as a strategic tool for GEO.
An llms.txt is neither a sitemap nor a meta-keyword tag 2.0 – it is a way to show AI systems what your brand takes pride in.
What is the impact of llms.txt on GEO?
Although the standard is still in development, it is wise to capitalize on it now. The first platforms (such as Anthropic) already support it, and chances are high that Google and OpenAI will follow.
Just like with schema.org or robots.txt back in the day, the rule is: those who get in early will reap the benefits later.
Therefore, keep monitoring: is your organic traffic changing, are you appearing more frequently in AI responses, or do you see a shift in GEO mentions? Then you're on the right track.
Tip: Want to generate an llms.txt yourself? See https://llmstxt.firecrawl.dev/ for an easy generator
Conclusion: start now, benefit later
The transition from SEO to GEO is inevitable. And llms.txt is one of the first tangible steps toward a future where AI determines your visibility. Do you want to remain visible as a brand or webshop in the world of ChatGPT and Gemini?
Then now is the time to experiment with llms.txt – and get ahead of your competitors.
