GTM GA4 Consent Mode (default denied)

Copy these snippets into a GTM tag template or a Custom HTML tag to initialize Consent Mode with default denied, then update on consent:

<script>
  window.dataLayer = window.dataLayer || [];
  function gtag() {
    dataLayer.push(arguments);
  }
  gtag('consent', 'default', {
    ad_storage: 'denied',
    ad_user_data: 'denied',
    ad_personalization: 'denied',
    analytics_storage: 'denied',
  });
</script>

When the user accepts, update:

<script>
  gtag('consent', 'update', {
    ad_storage: 'granted',
    ad_user_data: 'granted',
    ad_personalization: 'granted',
    analytics_storage: 'granted',
  });
</script>

For Floodlight/Ads, add conversion linking and ensure Consent Mode is respected.