First of all, check out this article for an overview of how custom event listeners work in Google Tag Manager. The reason I’m writing this #GTMTips article is that I want to upgrade the solution slightly, and I want to bring it back into the spotlight. Why? Because it’s still one of the most effective ways to customize your Google Tag Manager implementation. A custom event listener is a handler you write with JavaScript.

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One of the challenges in working with Google Tag Manager (or any JavaScript-based platform for that matter) is what to do with race conditions. A race condition emerges when you have two resources competing for execution in the browser, and there is a degree of unpredictability to which “wins” the race. A prime example is working with jQuery. It’s one of the most popular JavaScript libraries out there, and websites utilize it for a multitude of things, many useful for Google Tag Manager, too.

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Sending personally identifiable information (PII) to Google Analytics is one of the things you should really avoid doing. For one, it’s against the terms of service of the platform, but also you will most likely be in violation of national, federal, or EU legislation drafted to protect the privacy of individuals online. In this #GTMTips post, I’ll show you a way to make sure that any tags you configure this solution with will not contain strings that might be construed as PII.

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The steady increase in mobile use over the last years has introduced some new challenges for web analytics. It’s not just about mismatches in the tracking model (the concept of sessions is even more absurd for apps than it is for desktop browsing), but about something more fundamental, more basic. Think about it: if a visitor visits the website using a mobile device, there’s a significant chance of them losing internet connectivity and going unintentionally offline.

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More often than not, much of what we do in web analytics can be automated. This applies especially to implementations, audits, configurations, and reporting. So when I’m faced with a menial, manual task that might take hours for me to complete if done by hand, I always look at what could be done with some scripting and API work. I want to introduce a couple of Google Sheets add-ons I’ve written and released to the public.

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Facebook’s pixel has an attribute named content_ids (required for Dynamic Ads), which requires an Array of content IDs as its value. It’s very possible you’re running this pixel on a site which already has Enhanced Ecommerce for Universal Analytics implemented, and now you want to use the same Enhanced Ecommerce data that your developers have already made available in this Facebook pixel. Or perhaps you want to concatenate a list of strings, such as article tags (['culture', 'politics']), and send it as a comma-separated string to Google Analytics ('culture,politics').

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I’ve always been proud to avoid the typical headline clickbait of “Ultimate guide to pigeon care”, “All you need to know about the Great Vowel Shift”, “Did you know that you’ve been smoking peyote wrong your whole life?”. I’m ready to make an exception now by adding a BIG WHOPPING NUMBER to the title. You see, the amount of knowledge one can accumulate about anything they do on a daily basis is mind-blowing.

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