Google Consent Mode V2 and its impact on SEO

Google Consent Mode is a mechanism that allows websites to adjust data collection based on user consent. Version 2 enhances this functionality by introducing two new consent signals.
Lawwwing
March 17, 2025

The evolution of digital privacy has led Google to implement Consent Mode V2, a key update for data collection in an environment where third-party cookies are disappearing. This new version is not only relevant for advertising and analytics but also has a significant impact on SEO. In this article, we’ll analyze what Consent Mode V2 is, how it affects SEO, and what steps you should take to adapt.

What is Google Consent Mode V2?

Google Consent Mode is a mechanism that allows websites to adjust data collection based on user consent. Version 2 enhances this functionality by introducing two new consent signals:

  • ad_user_data: Controls the use of user data in Google Ads.
  • ad_personalization: Defines whether personalized advertising can be used based on user consent.

With the phase-out of third-party cookies starting in March 2024, this technology enables businesses to continue collecting information through statistical modeling, even when users reject cookies.

Why is Consent Mode V2 important for SEO?

The impact of Consent Mode V2 on SEO revolves around three key aspects:

1. Data analysis and conversion attribution

Google Analytics 4 (GA4) and Google Search Console are essential tools for SEO. If you don’t properly implement Consent Mode V2, you could lose critical data on user behavior and conversions on your website.

Solution: Properly configuring Consent Mode V2 ensures that GA4 continues receiving modeled data, even when users do not accept cookies.

2. Impact on indexing and crawling

If Google cannot collect information on user behavior, it could affect how it evaluates content quality and user experience (UX), potentially leading to changes in search rankings.

Solution: Ensure Googlebot has access to relevant content, minimize the impact of third-party scripts, and optimize loading speed.

3. Legal compliance and user experience

The GDPR and other regulations require clear consent for data collection. Poor implementation could lead to penalties, impact user trust, and increase bounce rates, all of which can harm SEO.

Solution: Use a Google-certified CMP (Consent Management Platform) and correctly configure Google Tag Manager.

How to properly implement Google Consent Mode V2?

For an effective implementation of Consent Mode V2, follow these steps:

1. Use a Consent Management Platform (CMP) like Lawwwing

Google recommends using certified CMPs to ensure compliance with privacy regulations. A great option is Lawwwing, a platform that automates your website’s legal compliance, allowing continuous generation and updates of legal texts, privacy policies, and cookie policies.

With Lawwwing, you can:

  • Implement a custom cookie banner that complies with GDPR and Google Consent Mode V2.
  • Ensure that third-party cookies are not activated until user consent is given.
  • Protect your website from penalties and improve regulatory compliance.
  • Easily install it via Google Tag Manager or by copying and pasting a simple code.

If you are an SEO consultant or manage a website with significant traffic, ensuring the proper implementation of Consent Mode V2 with Lawwwing will help you not only comply with regulations but also continue optimizing data collection and analysis for your projects and clients.

2. Configure Google Tag Manager

Enable Consent Mode V2 in GTM by following these steps:

  • Go to Container Settings in GTM and activate "Consent Overview".
  • Configure tags with the new ad_user_data and ad_personalization parameters.
  • Ensure that tags are triggered only after user consent is given.

3. Verify the implementation

Google provides tools to check if Consent Mode V2 is working correctly:

  • Google Tag Assistant to verify real-time events.
  • Debug mode in Google Analytics to analyze data flow.
  • Chrome extensions like "Google Analytics Debugger".

Conclusion

Google Consent Mode V2 is a key solution to balance user privacy with the need for data in digital optimization. In SEO, its correct implementation ensures that essential data for decision-making is not lost, user experience remains unaffected, and regulatory compliance is maintained.

Using platforms like Lawwwing simplifies the implementation of Consent Mode V2, ensuring legal compliance without technical complications. If you work in SEO or are an SEO consultant, implementing this solution is essential to maintaining data integrity and improving strategic decision-making.

Adapting to these changes will not only protect your website from penalties but also allow you to continue improving your SEO strategy in a world without third-party cookies.

If you haven’t implemented Consent Mode V2 yet, now is the time to do it!

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