Guide
How to add an llms.txt to GitHub Pages (2026 guide)
Updated · July 10, 2026 — Joffrey
What is GEO?→GitHub Pages doesn't serve an llms.txt file by default. Here's how to add one — plus Q&A schema.org markup — so AI answer engines can read your GitHub Pages site and cite it in their answers. The steps are concrete and take a few minutes.
Why add an llms.txt on GitHub Pages?
AI answer engines (ChatGPT, Perplexity, Gemini, Claude) cite only a handful of sources per question, and they favor pages they can read cleanly. An llms.txt hands them a clear, structured version of your site; Q&A schema.org markup makes your answers quotable word for word. Without it, even ranking well on Google, your GitHub Pages site is unlikely to appear in an AI answer — not for lack of quality, but because nothing is machine-readable.
Add the llms.txt and Q&A markup on GitHub Pages
- Q&A markup: paste it into your site's
<head>— via the_includes/head.htmllayout (Jekyll theme) or directly in yourindex.html. It's the strongest signal. llms.txt,llms-full.txtandrobots.txt: place them at the root of your source branch (or the/docsfolder, per Settings → Pages). They're served at the domain root.- Fully static site (no Jekyll)? Add an empty
.nojekyllfile at the root. Keep thellmsprefix: Jekyll ignores any file starting with_.
Verify it's live
Open your-site.com/llms.txt in a browser: you should see the file in plain text. Then test a page in Google's Rich Results Test to confirm the Q&A JSON-LD is detected. Until both checks pass, AI engines see nothing.