The single biggest conversion mistake on Shopify is treating the product detail page as a landing page. A product page assumes intent: it shows variants, reviews, shipping info, and an Add to Cart button. A landing page builds intent: it makes a promise, proves the promise, handles objections, and asks for one action. When you send ad traffic to a product page, you skip the persuasion and go straight to the close — and most visitors are not ready.
This is not a Shopify limitation. Shopify can host a proper landing page through custom page templates, dedicated landing page apps, or even a well-structured collection page. The problem is that the path of least resistance — "just use the product page" — is also the path that loses the most cold traffic. Everything below is about building the persuasion layer Shopify does not add for you.
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