Free tool
What do Google and AI agents read on your product page?
Google Merchant Center and AI shopping agents read your product's structured data, not your page design. Paste a product page and we show exactly what it publishes, run the audit's rules on it and, for Shopify stores, check it against your live price and stock.
How the test works
The page as a crawler downloads it, next to the store as it is
We download the page the way a crawler does (without running JavaScript) and read its Product or ProductGroup JSON-LD: name, brand, GTIN, every offer's price, currency and availability, attributes, return policy and shipping markup.
On a Shopify store we also read the product's live data from the storefront's Ajax API and pair each offer with its variant. Price and availability that disagree with the store are what Google disapproves as a mismatch, and what makes an AI agent quote the wrong price.
The full audit runs this on 25 products and adds everything else agents and Google Shopping read. See the checks →
Step-by-step fixes: Missing Product Schema in Shopify: How to Fix It · Google Shopping Price Mismatch in Shopify
What is product structured data?
A block of JSON-LD in the page that describes the product in schema.org's vocabulary: name, brand, GTIN, price, currency, availability, variants. Google Merchant Center and AI shopping agents read it instead of guessing from your page design. Most Shopify themes publish a basic version; apps and theme edits often break it.
Why must the price in structured data match my store?
Google compares the price and availability your page publishes with your Merchant Center feed and the landing page. A mismatch gets items disapproved ("Mismatched value"), and an AI agent that quotes a stale price or recommends a sold-out product stops trusting the listing.
The tester says there's no structured data, but my theme adds it. Why?
If an app or theme builds the JSON-LD with JavaScript after the page loads, it isn't in the HTML a crawler downloads. Google renders JavaScript eventually; most AI crawlers don't. We flag that case separately so you know the data exists but is invisible to them.
See everything Google and AI agents read
The full audit runs every check on your flagship products, scores your catalog for Google Shopping and AI shopping agents, and rebuilds your five worst products. Free, in about a minute.
Run free auditWant this fixed across your whole catalog? Talk to us: hello@catalogaudit.app