Free LLMs.txt Generator

AI platforms like ChatGPT, Claude, and Perplexity are crawling the web at scale. Without an llms.txt file, they have to guess which pages on your site matter and how your content is organized. That guessing wastes crawl budget and often leads to AI models missing your most important pages entirely.

The llms.txt specification (proposed by Jeremy Howard in late 2024) gives you a simple, standardized way to tell AI crawlers what your site is about. It works the same way robots.txt tells traditional search crawlers what to index, except it is designed specifically for how large language models consume information.

How AI crawlers use llms.txt

When an AI platform crawls your domain, it checks for yourdomain.com/llms.txt first. If the file exists, the crawler uses it as a map: it knows which pages to prioritize, what each section of your site covers, and how content is organized hierarchically. This means your product pages, documentation, and key blog posts get crawled and indexed by AI faster and more accurately.

Without llms.txt, AI crawlers rely on your sitemap, robots.txt, and internal link structure to navigate your site. These tools were designed for traditional search engines. They do not communicate the context, descriptions, and priority signals that AI models need to understand your content deeply.

llms.txt vs. llms-full.txt vs. llms-ctx.txt

The llms.txt ecosystem includes several related file formats:

• llms.txt: A concise summary of your site structure with links to key pages. Think of it as a table of contents for AI. This is what most sites should start with.
• llms-full.txt: A more detailed version that includes extended descriptions, content summaries, and metadata for each page. Useful for larger sites with complex content architectures.
• llms-ctx.txt: A context document that provides background information about your company, product, or brand. Helps AI models understand who you are and what you do before they start crawling individual pages.

Our generator creates an llms.txt file. For llms-ctx.txt, use our LLMs-ctx Generator.

Which AI platforms support llms.txt?

As of 2026, the following platforms actively look for and use llms.txt files during crawling:

• Perplexity: Uses llms.txt to prioritize pages during real-time web retrieval
• Claude (Anthropic): Processes llms.txt when indexing sites for knowledge retrieval
• ChatGPT (OpenAI): GPTBot respects llms.txt for crawl prioritization
• Google Gemini: Google's AI search incorporates llms.txt signals alongside traditional crawl data

Even platforms that do not explicitly advertise llms.txt support benefit from it indirectly: a well-structured llms.txt file improves how any crawler understands your site hierarchy. Our State of AI Brand Visibility 2026 report found that brands with llms.txt files were cited more consistently across platforms.

Best practices for llms.txt

• Keep it current. Regenerate your llms.txt whenever you add major new content sections, products, or pages. Stale files mislead AI crawlers.
• Prioritize your best content. List your most important pages first. AI crawlers often prioritize items higher in the file.
• Write clear descriptions. Each entry should have a one-line description that tells an AI model what the page covers. Avoid marketing language; be factual and specific.
• Include all content types. Blog posts, documentation, product pages, pricing, FAQs, and case studies should all be represented.
• Pair with schema markup. llms.txt tells crawlers where to go. JSON-LD schema markup tells them what they find when they get there. Together, they give AI the complete picture.