Google Consent Mode v2 with gtag.js (Manual)

Google Consent Mode v2 API is supported by CMP Cookie First.

Google Consent Mode allows for better conversion and tracking data while still protecting users privay. CookieFirst a Google certified CMP Partner.

!important: The implementation guide here is for users that are not using Google Tag Manager but load tags for Google Analytics over either our cookie banner or hard coded in the website code. Google Tag Manager and Google Consent Mode

Basic versus Advanced Consent Mode

Depending on the privacy regulations you should use one or the other. For example the ePrivacy would require you to entirely block requests to any Google services before consent which is the Basic Consent Mode implementation. The Advanced implementation will send cookieless pings to google with limited data. The advanced mode will lead to better attribution for conversions and behaviour data in GA4.

* When tags are restricted because of user consent preferences, no data gathering occurs, and the adjustment of advertisements relies on a basic model. This model utilizes aspects like the type of browser, type of conversion action, time of day, and other broad, non-specific variables. For additional information, please refer to consent mode and conversion modeling for Ads.

Enable Consent Mode for your website

Make sure the cookie banner embed code is placed as high as possible in the < head > section and above any Google tags.

<!-- The cookiefirst embed script -->
<script src="https://consent.cookiefirst.com/sites/your cookie embed/consent.js"><script>

<!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=TAG_ID">
</script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}

  gtag('js', new Date());
  gtag('config', 'TAG_ID');
  gtag('set', {'developer_id.dNjAwYj': true});

</script>
	  

<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
// Set default consent to 'denied' as a placeholder
// Determine actual values based on your own requirements
  gtag('consent', 'default', {
      'ad_storage': 'denied',
      'ad_user_data': 'denied',
      'ad_personalization': 'denied',
      'analytics_storage': 'denied',
      'functionality_storage': 'denied',
      'personalization_storage': 'denied',
      'security_storage': 'denied',
      'region': ['AT', 'BE', 'BG', 'CY', 'CZ', 'DK', 'EE', 'FI', 'FR', 'DE', 'GR', 'HU', 'HR', 'IS', 'IE', 'IT', 'LV', 'LI', 'LT', 'LU', 'MT', 'NL', 'NO', 'PL', 'PT', 'RO', 'SK', 'SI', 'ES', 'SE', 'CH', 'GB'
      ],
      'wait_for_update': 2000
      });
      gtag('consent', 'default', {
      'ad_storage': 'granted',
      'ad_user_data': 'granted',
      'ad_personalization': 'granted',
      'analytics_storage': 'granted',
      'functionality_storage': 'granted',
      'personalization_storage': 'denied',
      'security_storage': 'granted'
      });
      gtag('js', new Date());
      gtag('config', 'G-XXXXX');
      gtag('config', 'AW-XXXXX');
      gtag('set', {'developer_id.dNjAwYj': true}); //include cookiefirst developer ID for support


</script>
    
<script async src="https://consent.cookiefirst.com/sites/your-cookie-embed/consent.js"><script>

<script type="text/plain" data-cookiefirst-category="advertising" data-src="https://www.googletagmanager.com/gtag/js?id=G-XXXX"></script>
	   

Why is this Google Consent Mode important for website owners?

Consent mode provides a mechanism to modify the behavior of your Google tags based on the consent preferences of your users, allowing Google to account for any missing conversion data. It enables you to specify whether consent has been acquired for the utilization of cookies by Google Analytics and Google Ads. Google's tags will dynamically adjust, using cookies only for the designated purposes when consent has been affirmed by the user. Through the utilization of consent signals, conversion modeling is employed to reclaim any lost conversions stemming from consent alterations.

Consent mode can be utilized in Google Ads for the purposes of conversion tracking and managing your data segments.

Moreover, consent mode can be extended to:

• Google tag
• Google Analytics (includes Google Analytics for Firebase SDK)
• Google Ads (includes Google Ads Conversion Tracking and Remarketing; support for Phone Call Conversions is pending.)
• Floodlight
• Conversion Linker

Consent mode modeling is accessible in Google Ads for users who fulfill all the necessary eligibility criteria. Modeled conversions will be displayed in the 'Conversions' column and will be incorporated in all subsequent reports utilizing this data. You can check your consent mode status to verify if your consent mode has been accurately deployed and if your modeling is currently active, plus you can analyze the consent mode impact results to gauge the effect of modeling on your conversion quantities.

Basically there are two commands that are being used with the gtag ('consent') API. 

1. gtag ('consent', 'default') and
2. gtag ('consent', 'update')

These two will control how Google Tags are behaving, whether they track limited data and cookies. Google Consent Mode has 5 Consent Types which can be set. Refer to the table below to see what they mean.