Auto-Tagging (and Why Conversion Tracking Breaks Without It)
A Google Ads setting that tags your ad clicks so Analytics and conversion tracking can match them up correctly.
What it means
Auto-tagging is a setting in Google Ads that automatically adds a tracking parameter (gclid) to the links in your ads. That parameter is what lets Google Ads and Google Analytics agree on which visit came from which ad, campaign, and keyword.
Why it matters
If auto-tagging gets turned off — sometimes by accident, sometimes during a site migration — conversion tracking and campaign-level reporting can quietly stop working, even though ads keep running and spending money. It's one of the most common silent failures in an ad account.
ask datanephew
Is auto-tagging even turned on for my account?
Ask datanephew to check your auto-tagging status directly — this takes seconds and rules out one of the most common causes of broken conversion data.
My conversions dropped but nothing else changed — could this be why?
Ask datanephew to check auto-tagging first. A flipped setting with no other visible change is a classic sign of this exact problem.