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llms.txt is an emerging convention for telling AI crawlers — ChatGPT, Perplexity, Claude, Gemini — the canonical machine-readable URL index of your site. Unlike sitemap.xml (which lists every URL for search engines), llms.txt is a curated, minimal index that helps large language models cite your pages accurately in their answers. Fill in the wizard below to generate yours in under two minutes.
Fill in the form and click Generate llms.txt
to preview your file here.
Why it matters
Unlike sitemaps or schema, llms.txt is a curated index — you tell AI crawlers exactly which URLs matter, in plain text, without bloat.
When ChatGPT, Perplexity, or Google Gemini answer questions about your industry, a well-structured llms.txt increases the chance your pages are cited accurately.
AI crawlers can skip irrelevant pagination or tag pages and go straight to your highest-value content — reducing server load and crawl budget waste.
Under the hood
Discovery
Bots check the root domain for llms.txt (e.g. https://example.com/llms.txt), falling back to sitemap.xml when not found.
Parsing
The file is parsed top-to-bottom. The # title, > description, and ## sections map to canonical identity signals for entity recognition.
Prioritised crawl
URLs in earlier sections (Core pages, Services) get higher crawl priority than blog or documentation URLs further down the file.
Citation
When a user query matches content on a listed page, the LLM surfaces that URL and attributes the content to your site — with the brand name from the # header.
Freshness signals
Re-crawlers check llms.txt periodically. Keeping it updated (new pages, removed outdated URLs) signals freshness — similar to updating a sitemap.
Copy and paste this snippet to embed the llms.txt generator on your own site:
<iframe src="https://www.sterling-web.com/tools/llms-txt-generator?embed=1" width="100%" height="1000" style="border: 1px solid #e5e7eb; border-radius: 12px;" title="llms.txt Generator by SterlingWeb" loading="lazy" ></iframe>
Need expert help?
SterlingWeb builds complete GEO + AEO + SEO programs — schema, llms.txt, entity clarity, freshness signals — so your site gets cited by ChatGPT, Perplexity, and Google AI Overviews.
FAQ
llms.txt is an emerging convention that provides a machine-readable URL index for your site. Hosted at your domain root, it complements sitemap.xml by giving AI crawlers a curated list of your most important pages — helping them cite your content accurately in answers.
GPTBot, OAI-SearchBot, ClaudeBot, Claude-Web, PerplexityBot, Perplexity-User, Google-Extended, and Applebot-Extended are among the known AI crawlers. Support for llms.txt varies — some still rely primarily on sitemap.xml — but adoption is growing.
Place llms.txt at the root of your domain — e.g. https://example.com/llms.txt — and serve it as text/plain with Cache-Control: public, s-maxage=3600 so CDNs cache it for up to an hour.
No. Each file has a different role: robots.txt controls what crawlers are allowed to access, sitemap.xml is a comprehensive URL inventory for search engines, and llms.txt is a curated, human-readable index specifically for AI language model crawlers.
There are no guarantees, but llms.txt is a low-cost positive signal. It works best alongside clear schema markup, fresh content, strong entity signals, and pages that directly answer the questions your audience asks.
Update it monthly or whenever you publish a new high-value page. Many sites auto-generate it from their sitemap using a build script — a similar approach to what SterlingWeb does for this very site.
You cannot block crawlers via llms.txt itself — that is the job of robots.txt. Add a Disallow rule for the specific bot user-agent (e.g. GPTBot) in your robots.txt to prevent it from crawling your site.
This tool was built by Sterlingweb Growth Labs Private Limited, an India-based Shopify, WordPress, and SEO/AEO/GEO agency headquartered in Nashik. Learn more at /about or see our technical SEO services at /services/technical-seo-aeo-geo-services.
