ga4-privacy-compliance

---
name: ga4-privacy-compliance
description: Expert guidance for GA4 privacy and compliance including GDPR, CCPA, Consent Mode v2, data deletion, and privacy settings. Use when implementing Consent Mode, ensuring GDPR compliance, handling data deletion requests, configuring consent banners, or implementing privacy-first tracking. Covers consent parameters (ad_user_data, ad_personalization), data retention, IP anonymization, and compliance workflows.
---

# GA4 Privacy and Compliance

## Overview

GA4 provides privacy-focused features for GDPR, CCPA, and global privacy regulations including Consent Mode, data controls, and compliance workflows.

## When to Use This Skill

Invoke this skill when:

- Implementing Consent Mode v2 for GDPR compliance
- Setting up consent banners and consent management platforms (CMPs)
- Configuring privacy settings for EU/EEA users
- Handling GDPR/CCPA data deletion requests
- Implementing privacy-first tracking strategies
- Setting consent parameters (ad_storage, analytics_storage)
- Configuring data retention policies
- Managing user opt-outs and privacy requests
- Working with consent management platforms (OneTrust, Cookiebot)
- Implementing server-side consent tracking
- Debugging consent mode implementation
- Ensuring regulatory compliance for analytics

## Core Capabilities

### Consent Mode v2

**What is Consent Mode:**
Google's API for communicating user consent status to GA4, Google Ads, and other Google tags.

**Consent Parameters (v2):**

1. **ad_storage**
   - Purpose: Advertising cookies (remarketing, conversion tracking)
   - Values: "granted" | "denied"

2. **analytics_storage**
   - Purpose: Analytics cookies (GA4 tracking)
   - Values: "granted" | "denied"

3. **ad_user_data** (NEW in v2)
   - Purpose: User data sharing for advertising
   - Values: "granted" | "denied"

4. **ad_personalization** (NEW in v2)
   - Purpose: Personalized advertising
   - Values: "granted" | "denied"

**Additional Parameters:**

5. **personalization_storage**
   - Purpose: Website personalization
   - Values: "granted" | "denied"

6. **functionality_storage**
   - Purpose: Essential site functionality
   - Values: "granted" | "denied"

7. **security_storage**
   - Purpose: Security features (fraud prevention)
   - Values: "granted" | "denied"

### Implementing Consent Mode

**Basic Implementation (gtag.js):**

**Step 1: Set Default Consent State (BEFORE gtag.js)**

```html
<script>
  // Set default consent to denied
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}

  gtag('consent', 'defa

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