Check 16 / 18 LOW impact In the full checklist
Show total savings if discount applied
What this check is
Showing how much the order saved makes the discount legible. A total with no reference point hides the value of the offer you paid to create.
How to implement it
Render the pre-discount subtotal struck through beside the discounted total, listing the applied discount with its name or code, in the cart and again in the checkout summary. Keep the same presentation in the confirmation email.
How to verify it
Apply a discount code and confirm the saving is visible in the cart, the checkout and the order confirmation, with the arithmetic matching the admin order totals.
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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