Building 17 Custom Conversion Funnels in GA4 for Photo-Printing Retailer Printique

01// The broken state

Printique, Adorama's photo-printing company, sells prints, photo books, albums, and wall decor through step-based editor wizards, each product line with its own journey. The team wanted per-step drop-off visibility across 17 of those journeys in GA4, and the existing dataLayer could not support it: events carried no item-level data, names were inconsistent ("Add to Cart" for prints, "Order Now" for albums), "Order Now" fired even when adding to the cart failed, begin_checkout never fired from the cart page, and whole steps such as quantity, address, delivery, and payment pushed no events at all. Some editor pages had no GTM installed, and shoppers can switch products mid-editor, which breaks funnel attribution.

02// What we changed

1. aReviewed the dataLayer on every step of every product journey and documented the gaps: missing item data, inconsistent event names, events firing on error states, and editor pages with no GTM installed
2. bWrote a GA4-format dataLayer specification for Printique's development team, replacing GTM condition workarounds with real dataLayer pushes carrying item name and category
3. cRan a systematic verification loop with the dev team: a color-coded event tracking sheet and screenshot-documented tests, repeated until every step carried correct item-level data
4. dSolved mid-editor product switching with funnel_item_name and funnel_category_name variables persisted in a first-party cookie from the first product-page action, so each journey attributes to the product that started it
5. eAdded the missing journey events (entered_quantity plus the address, delivery, and payment-info steps) and fixed begin_checkout so the funnels see the full path to purchase
6. fBuilt all 17 funnels plus a cart-abandonment view in GA4 Explorations, from three-step print journeys to an eight-step photo-book flow

03// The outcome

All 17 product funnels are live in Printique's GA4 360 property, from simple three-step print journeys to the eight-step photo-book flow, with a cart-abandonment view alongside. Every step now pushes item-level data, and journeys that switch products mid-editor still attribute to their starting product, so the team can read drop-off step by step for each product line and decide exactly where to work on the funnel.