Test PMax quality
Find out whether Performance Max is finding new buyers or harvesting brand and retargeting demand.
Diagnose PMaxStan Consulting · DIY guides
These guides are written for Shopify owners and operators who spend money on Google and Meta and want to know whether the reported numbers reflect real revenue growth. Read them and you will be able to tell the difference between a PMax campaign producing demand and one farming existing demand, and see the structural problems inside a Shopify feed, tracking setup, and campaign architecture that cost most stores a quarter of their ad budget.
Quick answer
This pillar covers how to diagnose Shopify paid media without agency access: Performance Max architecture, the Shopify-to-Merchant Center feed, conversion tracking through the Shopify-Google app, brand search contamination of ROAS figures, and the new customer acquisition rate that separates real growth from retargeting revenue. It is written for store owners and operators who read their own reports. If you need the framework applied to your specific store rather than the framework itself, the Conversion Second Opinion delivers written findings in 72 hours for $999.
Reading order
Shopify marketing diagnosis starts by proving whether paid media is creating new demand, then checking whether the store, feed, and analytics can support more spend.
Find out whether Performance Max is finding new buyers or harvesting brand and retargeting demand.
Diagnose PMaxMerchant Center feed issues quietly suppress reach and distort which products the algorithm can sell.
Fix the feedConfirm product pages, mobile experience, speed, offer clarity, and tracking before paid traffic scales.
Check readinessUse Shopify Analytics to locate whether the leak sits at product view, cart, checkout, or purchase.
Read analyticsThat usually means the next decision depends on tracking architecture, attribution rules, and campaign structure, not another surface-level optimization.
The collection
Published
How to know if your Shopify PMax campaign is actually working
Five checks a Shopify owner can run in 60 minutes to assess whether PMax is producing real growth or farming existing demand.
Read guide →Published
How to fix a Shopify product feed for Google Shopping (the non-technical guide)
Feed errors suppress Shopping and PMax reach without any visible error message. How to access Merchant Center diagnostics from Shopify, fix the most common disapprovals, and optimize product titles.
Read guide →Published
How to know if your Shopify store is ready to run paid ads
The eight-point readiness checklist before paid traffic runs: conversion tracking verification, product page readiness, mobile experience, page speed, and offer clarity.
Read guide →Published
How to read Shopify Analytics to find conversion problems
The five-stage funnel inside Shopify Analytics, the thresholds that signal a problem at each stage, and how to reconcile Shopify Analytics with GA4 before making channel investment decisions.
Read guide →Limits of a guide
A guide describes the pattern. Your store has a specific version of that pattern, and the specific version is where the diagnosis sits. In a typical Shopify account running PMax, the patterns interact: one asset group covering 400 SKUs, a feed where 18 percent of products are disapproved without anyone noticing, the Shopify-Google app firing Purchase and Add to Cart as separate conversion actions with equal weight, a brand search campaign absent so PMax is absorbing branded queries and reporting a 9x ROAS that does not exist, and a retargeting audience that is 60 percent of spend because the algorithm found it easier than acquiring new customers. Any one of these on its own has a clean answer. Together, they require ordering.
If that describes your situation, the next step is the Conversion Second Opinion. Written findings, prioritized fix list, 72-hour turnaround, $999, no retainer. The diagnostic reads your actual store: Shopify analytics, Merchant Center, the PMax asset groups, the conversion events in Google Ads, and the feed attributes Shopify exports. You get the specific list, in the order that matters for your store, not the general framework.
Related pillars
The engagement format
$999. 72-hour delivery. Written findings. No retainer.
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