Understanding Tag Build

Tag Build converts your GA4 event requirements into Google Tag Manager-ready JSON—without spreadsheets, server setup, or GTM internals knowledge. Teams hand off structured, reviewable payloads instead of ad-hoc configurations.

Tracking requirements change frequently. Without a structured build process, each GTM update risks inconsistent payloads and hard-to-diagnose gaps in your analytics reports. Tag Build keeps each event spec as a reviewable artifact so changes stay auditable.

Why Tag Build?

GCP-based workflows can sync Google Sheets with GTM, but most agencies and in-house teams don't have GCP access or the engineering overhead to operate such workflows. Tag Build gives those teams the same structured build flow as a static, client-side tool—no cloud account required.

Who Benefits?

Tag Build is built for SEO specialists, digital analytics teams, and marketing agencies that manage GTM implementations without dedicated engineering support. If your team reviews tracking plans in spreadsheets today, Tag Build gives you a faster, more structured path to GTM-ready output.

Fig. 1 — Tag Build workflow

How It Works

See how a GA4 event spec maps to Tag Build's output format:

GA4 Event

{
  "comments": "----- usual event data -----",
  "event": "begin_checkout",
  "ecommerce": {
    "value": "$value",
    "currency": "$currency",
    "items": [
      {
        "item_id": "$item_id",
        "item_name": "$item_name",
        "item_brand": "$item_brand",
        "item_category": "$item_category",
        "item_category2": "$item_category2",
        "item_category3": "$item_category3",
        "item_category4": "$item_category4",
        "item_category5": "$item_category5",
        "discount": "$discount",
        "price": "$value",
        "quantity": "$quantity",
        "coupon": "$coupon",
        "index": "$index",
        "item_variant": "$item_variant"
      }
    ]
  }
}

Tag Build

[
  {
    "comments": "----- Tag Build format -----",
    "event": "another_event"
  },
  {
    "comments": "----- usual event data -----",
    "event": "begin_checkout",
    "ecommerce": {
      "value": "$value",
      "currency": "$currency",
      "items": [
        {
          "item_id": "$item_id",
          "item_name": "$item_name",
          "item_brand": "$item_brand",
          "item_category": "$item_category",
          "item_category2": "$item_category2",
          "item_category3": "$item_category3",
          "item_category4": "$item_category4",
          "item_category5": "$item_category5",
          "discount": "$discount",
          "price": "$value",
          "quantity": "$quantity",
          "coupon": "$coupon",
          "index": "$index",
          "item_variant": "$item_variant"
        }
      ]
    }
  }
]