How to add Google tag manager code in next js (2025) I DOUBLE Z
Want to integrate Google Tag Manager into your Next.js project for better analytics and marketing insights? In this short video, I’ll show you step-by-step how to add GTM code using the latest Next.js best practices—perfect for developers in the USA, UK, Canada, France & Europe.
✅ In this video:
Installing and configuring the react-gtm-module or custom _document.js approach
Where to insert your GTM Container ID securely
Verifying your setup in Google Tag Manager preview
Tips for managing tags in production vs. development
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