Google Analytics 4 (GA4): The Ultimate Guide 2025

Last updated
September 9, 2025
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Introduction

Google Analytics 4 is here to stay. And if you haven’t already familiarized yourself with it, now is the time. The old Universal Analytics is a closed chapter. GA4 is the future, and for anyone who wants to understand their visitors and make better decisions, it’s high time to get on board. But we get it. GA4 can feel like a jungle of new terms, reports, and settings. It’s more flexible than its predecessor, but also a bit trickier to navigate at first. This guide breaks down everything you need to know. How you can use GA4 to understand what’s actually working in your marketing, where your visitors are dropping off, and which insights you should act on.

Getting Started with Google Analytics 4

To start using GA4, you first need to create an account. Go to Google Analytics, log in with your Google account, and click “Start measuring.” Here, you’ll enter basic information such as your company name and choose which data sources you want to track, like a website or an app.

Once the account is created, you’ll have the option to add a new property. This is the foundation of your data collection. Give it a name, set the time zone and currency, and move on to the configuration. Google will guide you through the rest, and eventually, you’ll reach a step where you’ll receive a unique tracking code.

Google Tag vs. Google Tag Manager

When it comes to setting up measurement with GA4, you have three main options: add the measurement ID via a plugin, the Google Tag, or Google Tag Manager. The Google Tag is a simple way to add the tracking code directly to your website, while Google Tag Manager is a more advanced tool that allows you to manage all your tracking tags from one central place.

For most users, Google Tag Manager is recommended because it provides more flexibility and control over your measurement. It also makes it easier to update and adjust measurement settings without having to change the code directly on your website. Here’s how to proceed:

Install Google Analytics 4 with Google Tag Manager

Steg 1: Installera Google Tag Manager

1. Go to Google Tag Manager and create a new account.

2. Enter an account name and choose “Web” as the platform.

3. Click “Create” and accept the terms of service.

4. Copy the two code snippets that Google Tag Manager provides.

5. Paste the first code directly after the <head> tag and the second one directly after the <body> tag on your website.

6. Publish the changes in your website builder or CMS.

If you’re using WordPress, you can download a plugin called GTM4WP and then add your GTM ID under the plugin settings and click save to get started with Google Tag Manager.

Step 2: Add Google Analytics 4 in Tag Manager

1. Log in to Google Tag Manager and open your container.

2. Click on “Tags” and select “New.”

3. Give the tag a clear name, e.g., “GA4 - config - all pages.”

4. Click on “Tag Configuration” and choose “Google Analytics: GA4 Configuration.”

5. Get your Measurement ID from Google Analytics (found under Admin > Data Streams) and paste it into the “Measurement ID” field.

6. Click on “Triggers” and select “All Pages” to track all pageviews.

7. Save the tag, submit your changes, and publish the container.

Understanding Account Structure and User Permissions

Once you’ve created your GA4 property, it’s important to understand the account structure and how user permissions work. GA4 uses a hierarchical structure where you can have multiple properties under one account. This makes it easy to manage data from different websites or apps in one place.

User permissions are also important to manage properly. You can assign different levels of access to different users depending on their role in your team. For example, a marketing manager may need full access, while an analyst might only need to read data—or vice versa.

Using Reports in GA4

Understanding how to navigate and customize reports in Google Analytics 4 (GA4) is crucial to getting the most out of the platform. GA4 offers a new reporting interface that differs from previous versions, making it important to familiarize yourself with its features.

Navigation and Customization of Reports

To start using GA4’s reporting interface, you first need to understand how to navigate it. When you open GA4, you’ll see an overview page with different reports. Here, you can click on various sections to view specific data, such as user behavior or traffic sources. Customizing these reports is also important.

Differences Between Standard Reports and Explorations

GA4 offers both standard reports and a feature called Explorations. Standard reports provide a quick overview of key metrics, while Explorations let you create more detailed and customized analyses. With Explorations, you can drag and drop different data elements to build visual representations of your data, giving you deeper insights..

Create and Manage Custom Reports for Deeper Insights

To truly take advantage of GA4, you should learn how to create and manage your own reports. This is done using the Explorations feature, where you can build reports from scratch. You can choose which dimensions and metrics to include, and also apply filters to focus on specific segments of your audience. For example, if you want to analyze the behavior of users from a specific region, you can create a report that only shows data for that region.

By mastering GA4’s reporting interface, you can gain a deeper understanding of your website or app and make more informed, data-driven decisions. Start exploring these features today to maximize your digital analytics strategy.

Events and Key Events (formerly Conversions)

Understanding the differences between predefined and custom events in Google Analytics 4 (GA4) is essential for getting the most out of your data analysis. Predefined events are those GA4 has already set up for you, such as pageviews and clicks. These are useful for quickly getting started with tracking. On the other hand, custom events allow you to create specific events tailored to your business needs, such as tracking when a user completes a form.

To implement conversions effectively, you can use Google Tag Manager (GTM). GTM makes it easy to manage and deploy tags without having to modify your website’s code. You can set up a conversion by creating a new tag in GTM and linking it to a specific event in GA4. This allows you to track key user actions and measure how well your marketing campaigns are performing.

Another useful feature in GA4 is Enhanced Measurement Events. These events are automatically enabled and track interactions such as scrolls and video plays without you needing to do anything extra. By using these, you can gain deeper insights into how users interact with your content, which helps you improve the user experience and increase conversions.

Just keep in mind that if, for example, you’ve already set up event tracking for scrolls in Google Tag Manager, there’s no reason to also have scroll tracking enabled in GA4’s enhanced measurement.

Audiences and Segmentation

Creating and managing audiences in Google Analytics 4 (GA4) is an important part of understanding your visitors and improving your marketing. Audiences help you group users based on specific criteria, making it easier to target campaigns and analyze behaviors. For example, you can create an audience of users who have visited your website more than three times but haven’t made a purchase yet. This can help you focus on strategies to convert these users into customers.

Another advantage of GA4 is the ability to integrate your audiences directly into Google Ads. This means you can use your GA4 audiences to create more targeted and effective ad campaigns. By synchronizing audiences between GA4 and Google Ads, you can ensure that your ads reach the right people at the right time, which can lead to better results and a higher return on your ad investment.

E-commerce Tracking in GA4

Tracking e-commerce events in Google Analytics 4 (GA4) is essential for understanding customer behavior and optimizing sales. Here are some basic e-commerce events you should know:

  • view_item_list: Triggered when a customer visits your product catalog or category pages.
  • view_item: Tracks when a customer views a specific product, giving insights into which products attract interest.
  • add_to_cart: Fired when a customer adds a product to their cart, helping you understand which products are popular.
  • begin_checkout: Triggered when a customer starts the checkout process.
  • purchase: Tracks when a customer completes a purchase. This is key for measuring sales volume and revenue.

Implementing E-commerce Tracking with Google Tag Manager

To effectively track these events, you can use Google Tag Manager (GTM). Before starting the implementation, you first need to know which e-commerce platform you’re using, as the setup varies depending on the platform.

Integration with WooCommerce, Shopify, or a custom build?

  • WooCommerce: Use a plugin like GTM4WP to automatically populate the data layer with e-commerce variables that support tracking.
  • Shopify: Install the Google app and activate GA4, and your e-commerce data will flow into GA4 automatically.
  • Custom-built platform: Here, you’ll need to create a data layer that contains the e-commerce data generated when users interact with your store. This requires more work from a developer to get e-commerce tracking working.

Set Up GA4 E-commerce Tracking via GTM

  1. In GTM, create a new tag with {event} as the GA4 event.
  2. Check “Send e-commerce data” and select the dataLayer as the data source.
  3. Set up triggers that fire the tags when specific e-commerce events occur on your website. Use “custom event” and add all e-commerce events, separating them with |, and enable regular expression matching.
  4. Publish your changes in GTM to start tracking the events

By following these steps, you can effectively use GA4 to gain insights into your customers’ behavior and optimize your e-commerce strategy.

Tools for Troubleshooting and Debugging in GA4

Analyzing traffic and troubleshooting issues in Google Analytics 4 (GA4) is crucial for understanding how visitors interact with your website. To do this effectively, you can use tools like DebugView and Chrome Developer Tools. These tools help you view real-time data and identify any issues with tracking.

Using DebugView and Chrome Developer Tools

DebugView is a feature in GA4 that lets you see events in real time. This is especially useful when testing new tracking settings or making sure your events are being recorded correctly. To activate DebugView, you just need to enable debug mode in your browser and then navigate to DebugView in GA4.

Chrome Developer Tools is another powerful tool that can help you troubleshoot tracking issues. By using the “Network” tab and filtering for requests containing “collect?”, you can see what data is being sent to GA4 and verify that the correct events and parameters are being passed.

Benefits of Google Tag Manager Preview Mode

Google Tag Manager (GTM) preview mode is another important troubleshooting tool. When you activate preview mode in GTM, you can see which tags are firing on your website and in what order. This helps you identify any issues with tags that aren’t firing correctly or are causing conflicts.

Key Chrome Extensions for Effective Troubleshooting

To further improve your troubleshooting process, you can use Chrome extensions like Google Tag Assistant and Omnibug. These extensions make it easy to verify that your GA4 implementation is working properly and help you quickly identify and fix issues.

By using these tools and techniques, you can ensure that your GA4 tracking is accurate and that you’re getting the data you need to make informed decisions about your website and marketing strategy.

Advanced Data Management in GA4

Managing data in an advanced way in Google Analytics 4 (GA4) is essential for gaining deeper insights and optimizing your digital strategy. By understanding and using GA4’s advanced features, you can maximize the value of your data and make more informed decisions.

Data Retention and Historical Data Management

An important aspect of data management in GA4 is data retention, which determines how long your data is stored before being deleted. It’s crucial to configure data retention correctly to ensure you have access to historical data when you need it. This can help you analyze trends over time and make long-term decisions based on past results.

BigQuery Integration for Deeper Analysis

GA4 offers a powerful integration with BigQuery, allowing you to export your data for more advanced analysis. With BigQuery, you can run complex queries and gain insights that aren’t possible with standard GA4 reports. This is especially useful for large companies or organizations that handle vast amounts of data and require more detailed analysis.

Server-side Tracking and Measurement Protocol

To improve data collection and ensure you’re getting the most accurate data possible, you can implement server-side tracking. This means data collection happens on the server side rather than in the user’s browser, reducing the risk of data loss. By using the Measurement Protocol, you can also send data directly to GA4 from your own servers, giving you even greater control over your data collection.

By leveraging these advanced data management features in GA4, you can ensure you’re getting the most out of your data and making well-informed decisions for your digital strategy. Start implementing these techniques today to take your data analysis to the next level!

Attribution and Conversion Optimization

When it comes to understanding how your marketing efforts impact sales, attribution is a key component. In Google Analytics 4 (GA4), there are different attribution models, and it’s important to understand the differences between them. Data-driven attribution is one of the most advanced models and uses machine learning to assign credit for conversions based on how different touchpoints contribute to sales. This contrasts with last-click attribution, where all credit is given to the last interaction before a conversion.

To get a better understanding of how your marketing channels perform, you can use GA4’s reporting tools to analyze traffic flows. By reviewing these reports, you can identify which channels drive the most traffic and which lead to the highest number of conversions. This is crucial for optimizing your marketing strategies and improving return on investment.

To optimize conversions using GA4 data, you can follow these steps:

  • Analyze which channels deliver the best results and focus your resources there.
  • Test different attribution models to see which one provides the most accurate picture of your marketing efforts.
  • Use insights from GA4 to adjust your campaigns and improve the user experience on your website.

By understanding and using GA4’s attribution models and reporting tools, you can effectively optimize conversions and maximize the impact of your marketing efforts.

GDPR and Data Protection in GA4

Managing data protection and complying with GDPR rules is, of course, extremely important when using Google Analytics 4 (GA4). GA4 includes several features that help protect user privacy and ensure compliance with laws and regulations.

One key aspect is how GA4 handles anonymization and IP addresses. GA4 automatically anonymizes IP addresses, meaning the last part of the user’s IP address is removed before being stored. This helps protect user identity and comply with GDPR requirements.

Another important feature in GA4 is Google Consent Mode. This tool allows websites to adjust how Google services use cookies based on user consent. If a user doesn’t consent to cookies, Consent Mode can adjust how data is collected and processed, making it possible to still gain insights without violating privacy laws.

To ensure GDPR compliance when using GA4, keep these settings in mind:

  • Enable IP anonymization: Make sure this feature is activated to protect user identity.
  • Use Google Consent Mode: Implement this to manage user consent and adjust data collection accordingly.
  • Review and adjust data retention settings: Decide how long you want to keep user data and ensure it aligns with GDPR requirements.

This is not legal advice. If you’re uncertain, you should consult a lawyer who specializes in the field.

Configuring GA4 Correctly

Your roadmap for moving from beginner to advanced user

  • Start by using the standard interface and default reports (Acquisition, Engagement, Conversion, etc.).
  • Begin using pre-built templates in the “Exploration” section.
  • Customize your own reports with dimensions and metrics to answer relevant business questions.
  • Adjust the GA4 interface with custom reports to fully align with your business goals.
  • Use the GA4 API or, even better, BigQuery, to build custom reports in Looker Studio.

Setting up Google Analytics 4 (GA4) properly is critical for obtaining reliable data and insights. A key first step is to implement IP filters to exclude internal traffic from your reports. This ensures your data isn’t skewed by visits from your own team. To do this, go to your GA4 settings and create a filter that excludes IP addresses from your office or network.

The next step is to create custom definitions and events. This allows you to track specific user interactions that are important to your business. For example, you can create a custom event for when a user clicks a specific button or submits a form. By defining these events, you can gain deeper insights into how users interact with your website.

Another important part of proper configuration is cross-domain tracking. If you have multiple domains that users navigate between, it’s crucial to track the user journey across them. This is done by enabling cross-domain tracking in GA4, which provides a more cohesive picture of user behavior.

Also, make use of Google Signals to access more detailed demographic and interest-based data, which can improve your audience analysis.

By following these steps, you can ensure your GA4 setup is correct and that you’re getting the most accurate and useful insights from your data. Start implementing these actions today to optimize your digital analytics and marketing strategy.