Full transcript & breakdown
Where browser pixels lose data
Ad blockers, ITP cookie expiry, and in-app browsers each remove a slice of your conversion signal. Individually they look like noise; together they routinely hide 15–30% of conversions, which drags reported ROAS below reality and starves the bidding algorithm.
The server-side layer
Send conversions from your own backend using Meta's Conversions API and Google's server-side tagging, with a shared event ID so browser and server events deduplicate. The browser pixel stays — it captures rich context — but the server becomes the source of truth for the conversion itself.
Postback-based attribution is the same pattern applied to affiliate traffic: the network gets a signed server-to-server call the moment a conversion lands, independent of the visitor's browser.
Validating the restore
Compare platform-reported conversions to backend orders daily for two weeks after launch. A healthy setup lands within 5% of your own order count; anything wider means deduplication or event-ID mapping needs work.
