Opinionated
We recommend the best approach, not every approach. When there are five ways to do something, we tell you which one works and why.
TaggingDocs
Opinionated, practical documentation for Google Tag Manager and GA4. Built by practitioners, for practitioners.
Where do you want to start?
Section titled “Where do you want to start?” 🚀
Setting up GTM for the first time
Install your container, understand the basics, and fire your first tag.
🛒Implementing ecommerce tracking
Complete dataLayer specification for GA4 ecommerce events.
🖥️Migrating to server-side GTM
Architecture, setup guides, and cost management for sGTM.
📋Building a dataLayer specification
Naming conventions, event design, and validation strategies.
Explore the docs
Section titled “Explore the docs” Foundations Core concepts — how GTM works, the dataLayer, tags/triggers/variables, and when not to use GTM.
Client-Side GTM Everything in the browser — container setup, triggers, variables, tags, tracking implementations, and debugging.
Server-Side GTM Move tracking server-side — architecture, setup guides, custom clients, and cost management.
DataLayer The contract between your site and analytics — event specs, ecommerce events, platform guides, and validation.
GA4 Google Analytics 4 — data model, configuration, reporting, BigQuery, and troubleshooting.
Consent & Privacy Privacy-compliant tracking — Consent Mode v2, CMP integration, and server-side consent.
Analytics Alternatives Privacy-focused alternatives to GA4 — Plausible, Fathom, Simple Analytics, Matomo, and Piwik Pro.
Ad Platforms Conversion tracking for Google Ads, Meta, TikTok, LinkedIn, Pinterest, Snapchat, Microsoft, Twitter/X, Reddit, and Amazon.
Recipes Copy-paste solutions — button clicks, form submissions, video tracking, cross-domain, and more.
Resources Checklists, templates, migration guides, and community tools.
What makes TaggingDocs different
Section titled “What makes TaggingDocs different”Practical
Every page helps you do something. Real code examples, real configurations, real-world gotchas. No theory without application.
Complete
From first container install to server-side GTM at scale. Covers what Google’s docs skip — the gaps, the edge cases, the “how do I actually do this?”
For practitioners
Written by people who’ve debugged dataLayer issues at 2am. We know what trips people up because we’ve been there.