Check 14 / 21 LOW impact In the full checklist
Shipping cost calculator on PDP
What this check is
The cost of delivery is the most common reason a filled cart is abandoned, and it is almost always revealed last. A calculator that shows the rate before the add-to-cart click removes the surprise.
How to implement it
Render a country and postal-code selector on the product page that queries the live carrier rates, and place it directly under the buy box or the delivery promise. Cache the estimate for the session so the shopper is not asked twice.
How to verify it
Enter two countries with different rates in the calculator and confirm the quoted figure matches the rate charged when the same destination completes checkout.
All 197 checks, one Google Sheet
This page is the summary. The full checklist carries the priority, the impact score and the tool link for every check — all 197 of them, across 14 categories, as a Google Sheet and CSV with lifetime updates.
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