Automatically collected events in Google Analytics 4 (GA4)

An Event is the user’s interaction/activity with a web page element embedded on a website and/or mobile app.

There are four categories of events in Google Analytics 4:

  1. Automatically Collected Events
  2. Enhanced Measurement Events
  3. Recommended Events
  4. Custom Events

Automatically collected events are automatically triggered and logged (recorded) by Google Analytics 4 (GA4) on certain pre-defined user activities.

These pre-defined user activities can be (but not limited to):

  • A user clicking on a mobile ad
  • A mobile ad being served on a screen
  • Viewing of a mobile ad
  • Crashing of an app
  • Downloading of a file
  • Launching of a mobile app for the first time
  • Visiting a website for the first time.
  • Completing an in-app purchase
  • Loading of a web page
  • Transitioning of a screen on a mobile app
  • Reaching the bottom of a web page
  • Video starts playing
  • Video progression
  • Video ends playing
  • Performing a site search etc.

Note: You don’t need to add any code or tag on your website/app in order to track automatically collected events.

The following are examples of automatically collected events and their corresponding parameters:

ad_click

This event is triggered when a user clicks on a mobile ad.

You can supply additional information with this event by using the following parameter ‘ad_event_id‘.

ad_exposure

This event is triggered when a mobile ad is served on a screen.

You can supply additional information with this event by using the following parameters: firebase_screen, firebase_screen_id, firebase_screen_class, exposure_time.

ad_impression

This event is triggered when a user views a mobile ad.

You can supply additional information with this event by using the following parameter ‘ad_event_id

app_exception

This event is triggered when an app crashes or throws an error.

For supplying additional information use the following parameters: fatal, timestamp, engagement_time_msec

file_download

This event is triggered when a user downloads a file from a website.

For supplying additional information use the following parameters: file_extension, file_name link_classes, link_domain, link_id, link_text, link_url

first_open

This event is triggered when a user first time launches an app after installing or re-installing it.

For supplying additional information use the following parameters: previoius_gmp_app_id, updated_with_analytics, previous_first_open_count, system_app etc.

first_visit

This event is triggered when a user visits a website for the first time.

in_app_purchase

This event is triggered when a user completes an in-app purchase.

For supplying additional information use the following parameters: product_id, price, value, currency, quantity etc

page_view

This event is triggered each time a web page loads in the browser window.

screen_view

This event is triggered when a screen transition occurs.

For supplying additional information use the following parameters: firebase_screen, firebase_screen_class, firebase_screen_id, firebase_previous_screen etc.

For a complete list of automatically collected events and the supported parameters, check out the official help documentation: https://support.google.com/analytics/answer/9234069

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Where to find automatically collected events in Google Analytics 4?

You can find the automatically collected events in the ‘All Events‘ report.

Follow the steps below:

Step-1: Navigate to your GA4 reporting view.

Step-2: Scroll down and then click on ‘All Events‘ report under ‘EVENTS‘:

You should now be able to see the complete list of all the logged events (including automatically collected events) in your GA4 reporting view:

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