Debugging consent and conversion tracking with a headless scan
Hi HN, I’ve spent the last few months debugging a pattern I kept seeing on client sites: Ads are running, tags are installed, dashboards look fine — but Google Ads conversions are missing, inconsistent, or silently degraded. In most cases, the problem wasn’t the conversion tag itself. It was consent timing: tracking scripts firing before consent cookies set before consent Consent Mode v2 present but misconfigured conversion events firing before consent updates These setups often “look” correct in GTM or DevTools, but behave differently for a real first-time visitor. So I built a small…
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In the maker’s words, at launch
Hi HN, I’ve spent the last few months debugging a pattern I kept seeing on client sites: Ads are running, tags are installed, dashboards look fine — but Google Ads conversions are missing, inconsistent, or silently degraded. In most cases, the problem wasn’t the conversion tag itself. It was consent timing: tracking scripts firing before consent cookies set before consent Consent Mode v2 present but misconfigured conversion events firing before consent updates These setups often “look” correct in GTM or DevTools, but behave differently for a real first-time visitor. So I built a small scanner that loads a site like a new user would and checks: what scripts fire before consent whether cookies are set pre-consent whether Consent Mode v2 is actually configured whether conversions would fire after consent The output is a technical report with detected issues and suggested fixes (mostly small configuration changes). This is not a compliance/legal tool — it’s meant as a debugging aid for people working with Google Ads, GA4, and consent setups. I’m sharing it here mainly for feedback from people who’ve dealt with consent/tracking edge cases, false positives, or odd GTM behavior. Happy to answer technical questions or explain how detection works.
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