How to Preserve Ad Click IDs with Server-side Tagging

With the announcement of iOS 26, Apple announced that it will be expanding Link Tracking Protection. For those who don’t know, Link Tracking Protection is by default enabled in Safari’s Private Browsing Mode. It’s responsible for removing various tracking parameters from the page URL (e.g., gclid), which makes it difficult to preserve ad click IDs. […]
Julius Fedorovicius
In Google Tag Manager Tips

Google Tag Manager Checklist – 75 Steps to Prepare a Website

Updated: August 21st, 2025 If you’re constantly working with Google Tag Manager, you’ve probably started noticing some repetitions, each project requires checking the same set of things/settings/data over and over again: Have you double-checked whether all required GA4 E-commerce data is in place? What about custom dimensions? The list could go on and on. After implementing GTM […]
Julius Fedorovicius
In Google Tag Manager Tips Resources

dataLayer.push not working? Here are some reasons and solutions

The data layer is a key component within Google Tag Manager for collecting and managing website data. The dataLayer.push method is the standard way to send information into this layer, making it available for you or your developers to interact with it. However, is dataLayer.push not working on your end? This article will explore the […]
Julius Fedorovicius
In Google Tag Manager Tips

Still Running tags in Google Tag Manager: Here’s how to fix it

Updated: May 12th, 2025 Here’s a problem: you enable Google Tag Manager Preview and Debug mode and see that a certain (or maybe multiple) tags are displayed as “still running”. You refresh the page, but the problem still persists. Why are your tags in Google Tag Manager “Still running”? There are several reasons: You are using […]
Julius Fedorovicius
In Google Tag Manager Tips

Auto-Event Variable In GTM: 2 Simple But Powerful Examples

Updated: May 6th, 2025 Google Tag Manager offers a lot of excellent features when it comes to website tracking. If you have already tried using GTM for more than basic Google Analytics pageview tracking, you have probably seen the list of 15+ variable types. That’s a pretty decent list, huh? I bet it raises more questions […]
Julius Fedorovicius
In Google Tag Manager Tips

JavaScript Variable in Google Tag Manager: Quick Guide

Updated: May 6th, 2025 If you have ever tried to find more information about the JavaScript variable in Google Tag Manager, here’s what you’ve probably seen: 1 paragraph in Google’s official documentation, and a bit more in Simo Ahava’s guide. But in general, not much. So I decided to dig deeper and give you a bit […]
Julius Fedorovicius
In Google Tag Manager Tips

What is URL variable in Google Tag Manager?

Updated: May 3rd, 2025 Have you ever been in a situation where you need to extract a part of the URL and turn it into a variable in Google Tag Manager? I have. The most common demand is to transfer so-called query string parameters to GTM. For example, I have a web address https://www.example.com/?product_id=123&category=shoes. Believe […]
Julius Fedorovicius
In Google Tag Manager Tips

How To Write a GTM Auto-Event Listener with No Coding Skills

I’ll repeat myself once again. Auto-event listeners are one of the key concepts in Google Tag Manager. Just like a trigger, variable, tag, or data layer. In fact, more than half of my Google Tag Manager blog posts mention auto-event listeners one way or another. Auto-event listeners are these super useful JavaScript functions that track particular […]
Julius Fedorovicius
In Google Tag Manager Tips