This article is about Google Analytics 4 properties. If you're using a Universal Analytics property, refer to the Universal Analytics section of this help center.

[GA4] About events

Events are triggered as users interact with your site or app

If you're migrating from Universal Analytics, read this migration guide instead.

The data you see in your reports comes from events that tigger as users interact with your website and/or app. For example, a page_view event triggers when a user views a page on your site.

You can collect the following events without you adding code:

For more advanced data collection, you can add the following events to your code:
  • Recommended events
    Recommended events are events that you implement, but have predefined names and parameters. Recommended events unlock existing and future reporting capabilities.
  • Custom events
    Custom events are events that you name and implement. Only create custom events if the events in the other categories don't work for your use case. Custom events don't show up in most standard reports. You need to set up custom reports for meaningful analysis. To create custom events in the web interface, see Modify and create events via the user interface.

Event names are case-sensitive; two events whose names differ only in case will result in two distinct events.

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