Google’s Performance Max (PMax) campaigns are designed for automation — but often at the cost of transparency. While automated bidding and creative management help scale campaigns, advertisers are left with minimal insight into where budget is spent, how products are performing, and what queries are driving conversions.

This script is designed to lift the curtain on PMax. It provides a holistic overview of how your PMax campaigns are functioning across several critical dimensions.

• eCommerce Brand wants to see which products perform best inside a PMax campaign.
• Lead Gen Advertiser wants to know if traffic is coming more from YouTube or Search.
• Agency Account Manager needs a weekly snapshot of what’s working (and what isn’t).
• Creative Team wants to validate which headlines or visuals are resonating.

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Q: Can this script adjust my campaigns?

No, this is a read-only diagnostic tool. It only reports on data.

Q: What if I only want to look at certain campaigns?

Apply a label to your desired PMax campaigns and use the LABEL_FILTER variable.

Q: Does it work with PMax for Leads?

Yes — although product insights won’t apply. You’ll still get channel and search visibility.

Q: Can this help with Smart Shopping upgrades?

Yes. It helps track whether your Smart Shopping → PMax migration is actually converting.

Q: Where does the data go?

All outputs are sent to a Google Sheet you provide in the SPREADSHEET_URL.