GA4 Dimensions & Metrics Explorer

Session source sessionSource

The source that initiated the session (e.g. google, newsletter).

Type
Dimension
Scope
Session
Category
Traffic source
API name
sessionSource

Compatibility

Likely compatible (scope-based estimate — run fetch_metadata.py for Google's exact matrix):

DatedateDay of weekdayOfWeekHourhourCountrycountryCitycityDevice categorydeviceCategoryOperating systemoperatingSystemBrowserbrowserLanguagelanguageSession default channel groupsessionDefaultChannelGroupSession mediumsessionMediumSession source / mediumsessionSourceMediumSession campaignsessionCampaignNameFirst user default channel groupfirstUserDefaultChannelGroupPage pathpagePathPage path + query stringpagePathPlusQueryStringPage titlepageTitleLanding pagelandingPageHostnamehostNameEvent nameeventNameNew / returningnewVsReturningAudience nameaudienceNameActive usersactiveUsersNew usersnewUsersTotal userstotalUsersSessionssessionsEngaged sessionsengagedSessionsEngagement rateengagementRateAverage session durationaverageSessionDurationBounce ratebounceRateViewsscreenPageViewsViews per sessionscreenPageViewsPerSessionEvent counteventCountEvent count per usereventCountPerUserConversionsconversionsKey eventskeyEventsUser engagementuserEngagementDurationTotal revenuetotalRevenueTransactionstransactions

Watch out combining it with: Cohort, Cohort nth day — these can raise incompatible dimensions and metrics.