Analytics & Tracking Blog
Expert guides on GTM, GA4, conversion tracking, server-side tagging, and data-driven marketing.
Debugging GTM Data Layer Issues with GTM Preview Mode
GTM Preview Mode (formerly Tag Assistant) is the primary tool for diagnosing data layer problems. This guide explains how to use it to find missing events, wrong values, and trigger failures.
Server-Side GTM and the Data Layer: What's Different
Server-side GTM has a fundamentally different data model from client-side GTM. This guide explains how events reach the sGTM container, what replaces the data layer, and key differences.
Data Layer Tracking on SPAs: React, Angular, and Vue Challenges
Single-page applications change URL without a page reload, breaking traditional GTM page view tracking. This guide covers data layer patterns for accurate SPA analytics.
Custom Events in the GTM Data Layer: Beyond Pageview
Most valuable tracking happens beyond the pageview. Custom data layer events let you track button clicks, form submissions, downloads, video plays, and any user interaction with precision.
GTM Variables: Reading Data from the Data Layer
GTM Data Layer Variables let you extract values from data layer pushes and use them in tag parameters and trigger conditions. This guide explains how to configure them correctly.
The Complete Ecommerce Data Layer Setup for GA4
GA4 ecommerce tracking requires a specific data layer structure for product impressions, add to cart, checkout, and purchase events. This guide covers every event with correct field names.
What Is the GTM Data Layer and Why Does It Matter for Tracking?
The GTM data layer is a JavaScript object that acts as a communication bridge between your website and Google Tag Manager. This explainer covers what it is, how it works, and why it matters.
dataLayer.push Syntax: The Complete Reference Guide
dataLayer.push is the core API for sending events and data to GTM. This reference guide covers the syntax, the event field, data persistence, variable reading, and common patterns.