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📖 GEO optimisation guide for ChatGPT, Perplexity and Google AI

How to Optimise for AI Search — GEO Guide 2025

Learn how to make your site visible in ChatGPT, Perplexity and Google AI answers. Entity signals, structured data for LLMs, /llms.txt and AI citation strategies.

Learn how to make your site visible in ChatGPT, Perplexity and Google AI answers. Entity signals, structured data for LLMs, /llms.txt and AI citation strategies. This guide covers the key principles and shows you how to action them using Seotific — free during beta.

What is GEO (Generative Engine Optimisation)?

GEO is the practice of optimising content so that AI search engines (ChatGPT, Perplexity, Google AI Overviews) cite and reference your site in their responses. Unlike traditional SEO which targets ranking positions, GEO targets being cited as a source.

How do AI search engines decide what to cite?

AI engines prefer: clear entity definition (is it obvious what your brand is and does?), structured data (JSON-LD helps AI parse your content), factual, direct answers to questions, high E-E-A-T signals (author credentials, dates, sources), and properly formatted /llms.txt.

What is /llms.txt?

Similar to robots.txt, /llms.txt is a file at the root of your domain that tells AI crawlers (GPTBot, ClaudeBot, PerplexityBot) what content they can and can't index, and how to represent your brand. Seotific generates this file automatically.

Does traditional SEO still matter?

Yes — and it's increasingly intertwined with GEO. High-ranking pages are more likely to be cited by AI engines. Good structured data helps both Google's algorithm and AI extraction. Strong E-E-A-T signals serve both audiences. The fundamentals overlap significantly.

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