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What is GA4 Measurement Protocol?

GA4 Measurement Protocol Google Analytics server-side GA4 API server-side GA4 GA4 events API Measurement Protocol v2 GA4 offline tracking

Quick Answer

GA4 Measurement Protocol is Google's server-to-server API for sending events directly to Google Analytics 4. It bypasses browsers entirely, making it immune to ad blockers and tracking prevention. Use it for server-side conversion tracking, offline conversions, and ensuring complete analytics data.

Full Answer

GA4 Measurement Protocol lets you send events from your server directly to Google Analytics 4, bypassing the browser entirely. It's the server-side counterpart to gtag.js client-side tracking. How It Works Client-side (gtag.js): Server-side (Measurement Protocol): The API Endpoint Event Structure Why Use Measurement Protocol Ad blocker immunity:

  • No script to block
  • Server request, not browser
  • Data arrives regardless Complete data capture:
  • Safari users tracked fully
  • Blocked users included
  • Technical failures avoided Offline/backend events:
  • Phone orders
  • Subscription renewals
  • CRM-triggered events
  • Refunds and adjustments Key Requirements 1. Measurement ID: Your GA4 property's G-XXXXXXXX 2. API Secret: Generated in GA4 Admin 3. Client ID: The ga cookie value or generated ID 4. Event data: Properly formatted JSON Matching to Sessions To connect server events to existing user sessions, capture and send the client_id (from _ga cookie). This links server events to the user's...

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