Google Ads Enhanced Conversion Tracking

Google Ads enhanced conversion tracking represents the evolution of conversion measurement for the post-cookie era. Where standard conversion tracking relies on cookies and click IDs that are increasingly blocked or restricted by browsers and operating systems, enhanced conversion tracking adds a privacy-safe second layer: hashed first-party customer data that allows Google to attribute conversions through account matching even when the cookie chain is broken. This is not a theoretical improvement — in accounts where enhanced conversion tracking is properly implemented, attribution rates typically increase by 10–30% as previously invisible conversions are recovered from Safari, Firefox, and ad-blocked browsers.

Implementing Google Ads enhanced conversion tracking correctly requires attention to several technical details that determine whether the implementation recovers meaningful attribution or adds noise. The customer data fields must be normalised and hashed in the correct format (lowercase email, E.164 phone format, separated first and last name). The data must be captured from the actual conversion confirmation page rather than from a previous step. Consent Mode must allow ad_user_data for the data to be transmitted. And the enhanced conversions feature must be enabled on the specific conversion action in Google Ads, not just configured in GTM. Adslytics handles all of these details as standard, with a validation step that confirms match rates are at the expected level before handoff.