GEO Knowledge Hub
In-depth guides on generative engine optimization, AI citations, schema, measurement, and cross-border playbooks—written for operators who need depth, not fluff.
137 in-depth articles
ChatGPT vs Perplexity vs Google AI Overviews: How Each Cites Sources and What That Means for Your Content
The same product page can win a citation in one engine and lose it in another. Here is how the three biggest AI answer surfaces pick sources -- and how to structure content that ranks in all of them.
Read articleWhen Your Product Goes Out of Stock: How AI Assistants Handle It and What to Do
Availability data is one of the highest-trust signals an AI assistant evaluates. Here is how to keep your product in the answer even when the shelf is empty.
Read articleWhy don’t AI shopping assistants cite my product page even though it has content?
The most common reason a product page loses an AI citation is not a lack of content but a gap in the specific facts the assistant actually wanted. Here is a repeatable way to find and fix those gaps.
Read articleHow ChatGPT and Perplexity decide which sources to cite in an answer
AI assistants do not rank pages the way search engines do — they build answers and choose sources to cite. Here is how that source selection works and what it means for your content.
Read articleHow to make your product reviews cite-worthy for AI shopping answers
AI shopping answers routinely pull star ratings and review quotes when they compare products. Here is how to make your reviews legible, structured, and consistent enough that assistants actually pick them up.
Read articleWhat do AI shopping agents actually extract from your product page?
When an AI shopping agent decides whether to cite your product, it runs a structured read of your page. Here is the field-by-field list of what it pulls and how to make each one legible.
Read articleHow do small brands get cited by ChatGPT when marketplaces dominate?
Marketplaces win most AI shopping answers on volume, but a smaller store can still earn citations with complete, verifiable product data. Here is the data-led playbook.
Read articleJSON-LD vs microdata vs visible HTML: which format do AI engines actually parse?
Concerned about exact request validation, JSON-LD is the format AI engines parse first; microdata is risky and visible HTML is the fallback. Here is the three-format ranking.
Read articleWhy isn't my store in AI shopping answers? A 2026 citation diagnostic
A step-by-step checklist to find which facts AI assistants can't extract from your product pages — and fix them in priority order.
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