Integrating Google Analytics 4 (GA4) with an Express.js Website

Integrating Google Analytics 4 (GA4) with an Express.js Website

Introduction

Google Analytics 4 (GA4) is the latest iteration of Google's web analytics tool, designed to provide a more comprehensive view of user interactions. For websites powered by Express.js, integrating GA4 is a streamlined process. This guide will walk you through setting up GA4 on your Express.js application.

Prerequisites

  • A functioning Express.js website.
  • A Google Analytics account.

1. Create a GA4 Property

  1. Log into your Google Analytics account.
  2. Navigate to Admin (gear icon) at the bottom left.
  3. In the Account column, select your account.
  4. In the Property column, click on + Create Property.
  5. Select Web when prompted.
  6. Input your website's details and click Create.

2. Retrieve the GA4 Tracking Code

  1. After the property creation, you'll be redirected to a page displaying your tracking details.
  2. Click on Data Streams under the Property column.
  3. Select the web data stream you just created.
  4. Under Tagging Instructions, opt for Global site tag (gtag.js). This reveals the tracking code.

3. Integrate the GA4 Tracking Code with Express.js

  1. Storing the Tracking Code:Create a file named ga4.js in your project's public directory and paste the GA4 tracking code inside.
  2. Serving the Tracking Code with Express.js:Ensure the express.static middleware is set up to serve your public directory.

  1. Injecting the Tracking Code into Views:

  • In the <head> section of your main layout or views (e.g., layout.pug, layout.ejs, etc.), include the ga4.js script.

For EJS:

For Pug:

4. Verification

  • Visit your website after deploying the changes.
  • Go to the GA4 interface and select Realtime on the left-hand sidebar. If your visit is registered, GA4 is correctly integrated.

5. Parallel Tracking (Recommended)

If transitioning from Universal Analytics to GA4, maintain both tracking codes. This ensures the accuracy of GA4 and allows access to familiar UA data during the transition.

Conclusion

Integrating GA4 with an Express.js website provides valuable insights into user interactions and site performance. As GA4 has a different interface and features than its predecessors, spend time exploring its capabilities to maximize its benefits.


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