Google Analytics 4 (GA4): Your Guide to Website Analytics in 2025

Monday, March 31, 2025

Primary Blog/Google Analytics 4 (GA4): Your Guide to Website Analytics in 2025

Google Analytics can seem complex, but this guide will simplify it, focusing on the latest version, GA4.

What is Google Analytics?​

GA4 is a free analytics tool that provides detailed analysis of your website or app's performance. It integrates with Google's marketing and advertising platforms like Google Ads, Data Studio (Looker Studio), and Search Console. GA4 differs significantly from its predecessor, Universal Analytics (UA), by using an event-based data model, offering enhanced AI-powered insights, and prioritizing user privacy.

Key Updates and Benefits of GA4 in 2025:​

  • AI-Powered Insights: GA4 uses machine learning to automatically surface helpful customer insights, predict future customer actions, and notify you of significant trends in your data.
  • Privacy-Centric Data Collection: GA4 emphasizes user privacy with features like IP address anonymization and enhanced consent mode tools to manage user preferences.
  • Unified Cross-Platform Reporting: Track app and web interactions together, including YouTube views, Google Ads, and organic channels, for a complete view of customer journeys.
  • Flexible Data Model: GA4's event-based model captures every interaction as an event, allowing for more detailed and customizable tracking.
  • Enhanced Reporting: GA4 offers improved reporting with customizable templates, explorations, and detailed metrics for analysis, such as conversion paths and user retention.
  • Predictive Metrics: GA4 can predict user behavior, such as purchase probability and potential churn, helping you create targeted marketing efforts.
  • Integration with Google Ads: Improved syncing capabilities for ad campaign tracking.
  • User Identification: GA4 uses multiple identity spaces (User ID, Google Signals, Device ID, and modeled data) to provide a unified view of user behavior across devices.


Benefits of Google Analytics 4

  • It uses artificial intelligence to automatically surface helpful customer insights, such as understanding your customers across devices and platforms.
  • It assists you in anticipating future actions that your customers may take.
  • Notifies you of significant trends in your data, such as rising demand for products.
  • It uses multiple identity spaces, such as marketer-supplied User IDs and unique Google signals from users who have opted into ad personalization.
  • App and web interactions, such as YouTube views, Google ads, and organic channels, are tracked together.
  • Reporting is simplified and reorganized to provide insight into the part of the customer journey you’re interested in.
  • Allows for more granular controls for ad personalization to optimize data.
  • Controls how you collect, store, and use Analytics data.
  • Adapts to the future, whether with or without cookies or identifiers.


Setting Up Your Google Analytics Account

  • Create a Google Account: You'll need a Google account with a valid email address and password.
  • Set up GA4: Register for Analytics. You can only access the app if you have a valid Google account.
  • Add Your Website Details:
  • Enter the name of your website
  • Provide the website URL.
  • Select your industry category and business size.
  • Choose your reporting time zone and currency.
  • Configure Data Streams:
  • Select the platform you want to track (Web, iOS, or Android App).
  • For web, provide your website URL and a stream name.
  • Enable enhanced measurement to automatically track events like page views, scrolls, and outbound clicks.
  • Install the GA4 Tracking Code: There are several ways to do this:
  • Manual Setup: Paste the Global Site Tag (gtag.js) directly after the opening <head> tag on each page of your site.
  • CMS Plugin: Use a plugin for your content management system (WordPress, Shopify, Wix, etc.).
  • Google Tag Manager: Use Google Tag Manager to add and manage your GA4 tag.
  • Verify Your Code is Working:
  • Check the Real-Time reports section in GA4 while browsing your site.
  • Use the DebugView in GA4 to ensure events are being tracked correctly.


Best Practices for GA4 in 2025:

  • Set Data Retention: GA4 retains user data for a maximum of 14 months. Go to Admin > Data collection and modification > Data retention to configure this.
  • Filter Internal Traffic: Exclude traffic from your own IP address to avoid skewing your data.
  • Track Important Events: Focus on tracking events that align with your business goals, such as form submissions, button clicks, and video views.
  • Use Parameters to Distinguish Events: Instead of creating separate events for slight variations, use parameters to differentiate them.
  • Customize Reports: Create custom reports and explorations to get the insights that are most relevant to your business.
  • Integrate with BigQuery and Looker Studio: For advanced analysis, connect GA4 to BigQuery and Looker Studio.


Key Metrics to Track in GA4:

  • Users: The number of unique visitors to your site.
  • Sessions: The number of visits to your site.
  • Engagement Rate: The percentage of engaged sessions (visitors who stayed longer than 10 seconds, viewed multiple pages, or triggered a conversion event).
  • Average Engagement Time: How long visitors actively interact with your site.
  • Conversions (Key Events): Track important actions like purchases, sign-ups, and form submissions.


GA4 vs. Universal Analytics (UA):

UA will no longer process new data after July 2023. GA4 is the current version of Google Analytics, with a different data model and features.

About Charles Curry

Charles founded his Etsy shop Wall Decal Source in 2012. He opened his decal shop and decided to create a nursery decal for his sisters new baby. Funnily enough he published the decal as an item for sale on his Etsy shop and people really liked it. Well a few years later and his shop has been almost completely taken over by nursery wall decals. He must still be a kid at heart. As Charles tested and tried all sorts of methods to expand his shop he stumbled upon a few simple formulas for consistently growing Etsy sales and views.

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