For product pages — add to sections/main-product.liquid or templates/product.liquid:
liquid
What this does: Lets Google replace the ugly URL line in search results with a clean breadcrumb path (Home › Corkscrews › Olivewood Sommelier) — proven to lift CTR 5–10%.
Phase 3C — Enhanced Product Schema (highest revenue impact)
Most Shopify themes already inject a basic Product schema. We're going to replace or supplement it with a richer version that includes brand, material, country of origin, and review aggregate.
Goes in: sections/main-product.liquid (or wherever the existing schema lives — search the file for "@type": "Product")
Replace the existing Product script (or add this one if missing — but never have two Product schemas on one page):
liquid
Choosing a selection results in a full page refresh.