GA4 Events & Parameters List

The complete GA4 events list: recommended events you send yourself, automatically collected events GA4 fires for you, and enhanced-measurement events triggered by the web tag. Each event links to a detail page with its parameters, expected values and platform availability.

Event parameters describe the context of a hit (value, currency, items, …). GA4 attaches automatic parameters such as page_location, page_title or session_id to every event, and you can add up to 25 custom parameters per event — register them as custom dimensions or metrics to use them in reports. The Limits tab lists event and parameter name/value character limits and the reserved names you cannot use.