llms-full.txt
llms-full.txt is the extended sibling of llms.txt: it concatenates each page's core paragraph into one file so an AI can 'read the whole site' in a single fetch. Ideal for glossaries, API docs, and product manuals.
Category: Technical
What is llms-full.txt?
llms-full.txt is the extended sibling of llms.txt: it concatenates each page's core paragraph into one file so an AI can 'read the whole site' in a single fetch. Ideal for glossaries, API docs, and product manuals.
How do you apply it in practice?
Size rule of thumb: 100–500 KB is sweet spot; over 1 MB risks truncation by some crawlers.
Why does it matter for AI search citations?
Generative search engines tend to extract sentences that are clearly defined, consistent and quotable on their own. Writing concepts like "llms-full.txt" as one consistent definition across your site, backed by structured data and verifiable sources, lowers the chance of being misread. This improves readiness only; it does not guarantee citations or ranking gains — measure actual citations to know.
Which related terms should you know?
llms.txt
llms.txt is a plain-text manifest at a site's root that lists key pages, APIs, and docs in Markdown for AI crawlers to index efficiently. Proposed by Anthropic in 2024, it has become the de-facto 'robots.txt for the LLM era'.
AI Citation
AI Citation refers to source links or quoted sentences that ChatGPT, Perplexity, and Google AI Overviews surface in their answers. Citation Frequency has become the core brand-visibility metric in the GEO era, replacing rank-and-click as the headline KPI.
llms-full.txt at a glance
| Term | llms-full.txt |
|---|---|
| Category | Technical |
| Last reviewed | 2026-10-06 |
References
- Google Search Central: SEO documentation
- Schema.org structured data vocabulary
- W3C JSON-LD 1.1 Recommendation
- GEO: Generative Engine Optimization (arXiv paper)
These documents support the definitions and methods, not ranking or citation promises; reviewed as of 2026-10-06.
By the 23SEOGEO team · Last updated: