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llms.txt Generator
Create a free, standards-compliant llms.txt file that tells AI models like ChatGPT, Claude, and Perplexity what your site is about and how they should use your content — the same way robots.txt guides search engines.
Paths or pages AI models may freely read and cite.
Paths you'd prefer AI models not use for training or answers.
What Is an llms.txt File?
An llms.txt file is a plain-text, Markdown-formatted file placed in the root directory of a website — reachable at yourdomain.com/llms.txt — that gives large language models (LLMs) like ChatGPT, Claude, Gemini, and Perplexity a clean, structured summary of what the site contains. Think of it as a short briefing document written specifically for an AI, rather than for a human visitor or a search engine crawler.
The idea was proposed in 2024 as AI assistants increasingly began browsing the live web to answer questions, summarize pages, and cite sources in real time. Unlike a human reading a page, an AI model has to parse navigation menus, ads, cookie banners, and JavaScript-heavy layouts just to find the actual content. An llms.txt file skips all of that noise and hands the model exactly what it needs: who you are, what your site offers, which pages matter most, and how you'd like your content treated.
It is not an official web standard ratified by a body like the W3C — it is a community convention, similar to how robots.txt started as an informal agreement among search engines before becoming near-universal. Because AI browsing and AI search are growing quickly, more sites are adopting llms.txt files simply to stay legible to the tools people now use to discover content.
Why Your Website Needs One
If you run a blog, a tool site, a documentation hub, or any content-driven property, there are a few concrete reasons to add an llms.txt file today rather than waiting:
- Accurate AI summaries. When someone asks an AI assistant "what does this website do," a well-written llms.txt gives the model a correct, concise answer instead of a guess based on scraped homepage text.
- Control over sensitive sections. You can flag login pages, checkout flows, or user dashboards as sections AI tools should not reference, similar to how you'd disallow them in robots.txt for search engines.
- Early-mover advantage. Adoption is still low. Sites that add an llms.txt file now are more likely to be well-represented as AI browsing tools mature and start prioritizing sites that make their intent explicit.
- Consistency with your privacy and usage stance. If you already publish a privacy policy or an AI usage policy, llms.txt lets you state the same preferences in a machine-readable format AI systems can actually parse.
llms.txt vs robots.txt vs sitemap.xml
These three files sound similar but serve different audiences and purposes. It helps to see them side by side:
| File | Audience | Format | Purpose |
|---|---|---|---|
| robots.txt | Search engine crawlers | Robots Exclusion Protocol | Allow/disallow indexing of paths |
| sitemap.xml | Search engine crawlers | XML | List all indexable URLs |
| llms.txt | AI language models | Markdown | Summarize site + set AI usage guidance |
You should keep all three. They are complementary, not substitutes for one another. Search engines largely ignore llms.txt, and AI browsing tools largely ignore robots.txt's fine-grained crawl-delay directives, so covering both keeps you visible everywhere.
How This Generator Works
- Enter your site name, homepage URL, and a one-line description — this becomes the file's title and summary.
- List the sections you're comfortable having AI models read and reference (blog, docs, tool pages).
- List any sections you'd prefer excluded, such as account areas or internal admin pages.
- Optionally add a contact email and a plain-language usage preference, such as requiring attribution.
- Click Generate, then copy the output or download it directly as
llms.txt. - Upload the file to your site's root directory so it's reachable at
yourdomain.com/llms.txt.
Best Practices for Writing llms.txt
- Keep the description short and factual — one or two sentences, not marketing copy.
- List your most important pages explicitly rather than just linking to a sitemap; AI models respond well to a curated shortlist.
- Update the file whenever you add a major new section to your site.
- Avoid contradicting your robots.txt file — if a page is blocked from search engines for a good reason, it usually shouldn't be listed as open in llms.txt either.
- State your attribution preference clearly if you care about it; most AI systems that honor llms.txt look for explicit usage language rather than inferring intent.
Common Mistakes to Avoid
- Placing the file in the wrong location. It must sit at the domain root, not inside a subfolder.
- Writing it like a marketing page. AI models parse it as structured data, not prose to be impressed by — clarity beats persuasion.
- Forgetting to keep it updated. A stale llms.txt describing a site from a year ago is worse than none at all.
- Assuming it blocks AI access. It is a preference signal, not an enforcement mechanism — treat it as guidance, not a security control.
Frequently Asked Questions
What is an llms.txt file?
A plain-text file at your site's root that gives AI language models a structured summary of your site and guidance on how to use its content.
Is llms.txt the same as robots.txt?
No. robots.txt manages search engine crawling using its own long-established syntax; llms.txt is a separate, newer Markdown convention aimed specifically at AI models.
Do I need an llms.txt file?
It's optional but increasingly useful if you want AI tools to represent your site accurately or want to set clear boundaries on AI use of your content.
Where do I upload the llms.txt file?
Upload it to your domain's root directory, alongside robots.txt, so it's accessible at yourdomain.com/llms.txt.
Will llms.txt stop AI companies from using my content?
It's a voluntary convention. Compliant tools are expected to respect it, but it isn't a technical enforcement mechanism, and not every AI system honors it yet.