Guides
Shopify discount code guides
Practical, no-fluff guides on measuring your discount codes: who used them, whether they leaked, and whether a sale actually changed anything.
Shopify's built-in reports show how much a discount code cost and how many orders used it. These guides cover what they leave out: whether a code reached new customers or people who were already buying at full price, how to spot a code that has spread to coupon sites, and what to do about it. Each one works with the Shopify admin, ShopifyQL or your orders export, with no app required.
Black FridayBlack Friday 2026 discount strategy: plan your offers by customer segment
Check last year's codes, build four segments, match each to an offer and set up codes that can't leak.
Shopify SidekickHow to check your Shopify discount codes with Sidekick
Questions that get useful discount answers from Sidekick, where its answers stop, and prompts to fix what you find.
Discount codesWhat Shopify's "Sales by discount codes" report doesn't tell you
The report shows what a code cost and how many orders used it. Here's what it can't tell you, and how to check your own codes.
Discount codesHow to track Shopify discount codes by new vs returning customers
Three ways to see who your codes reach: a ShopifyQL query for one code, one for every code, and a spreadsheet method.
Coupon leaksHow to tell if your Shopify discount code leaked, using your own orders
The signs a code has spread to coupon sites, three ways to check your orders for them, and how to stop it.
Discount strategyDiscount cannibalization on Shopify: how much went to customers who'd have bought anyway?
The three forms it takes, how to estimate each from your own orders, and the one way to prove it.
MethodologyHow SegmentIQ calculates where your discount spend went
The exact rules behind every figure: recent full-price buyers, first-time buyers, multi-code orders and flag thresholds.
Free toolDiscount Code Checker
Upload your Shopify orders export and see, for every code, how much went to customers who had recently paid full price.