GA4 UTM Performance - Private UTM reporting via the GA4 Data API.

GA4 UTM Performance

Workflow

Run reports in 3 steps

  1. Access: Save your token and choose a property.
  2. Report: Set scope, optional filters, and run the URL report.
  3. Explore: Build a custom report and export CSV.
Step 1

Access

Store an admin token on this device and save GA4 properties as reusable profiles.

Stored in localStorage on this device.

Store multiple GA4 properties and switch quickly.

Server env: GA4_ADMIN_TOKEN, GA4_SERVICE_ACCOUNT_JSON_B64, and (optionally) GA4_PROPERTY_ID.

Report setup

Date range

Choose a report window. Wider ranges help when campaign attribution is delayed.

Tip: GA4 can take time to attribute new campaigns. If you’re not seeing results, try a wider date range.

Optional

UTM filters

Filter by specific UTM values or keep broad matching to inspect all tagged traffic.

Applies to the URL report (filters pageLocation). Insights use GA4 session traffic-source dimensions.

Step 2

UTM URL Report

Parse URL-level traffic into UTM groups, then pivot, filter, and drill into specific combinations.

Groups are created client-side by parsing pageLocation.

Step 3

Explore

Run custom GA4 dimension/metric cuts, then segment rows into guided drilldown views.

These are GA4 Data API dimension names (examples: country, deviceCategory, sessionSource).

Tip: choose fewer metrics if GA4 rejects a combination.