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UTM Parameters

In-depth technical guides for every standard and GA4-specific UTM parameter, syntax rules, case sensitivity, and URL encoding.

Technical schematic detailing the 9 UTM parameters mapping to GA4 session and event dimensions
Core Pillar Guide

Complete UTM Parameters Guide for GA4: Manual Campaign Dimensions & Best Practices

The definitive technical reference to all 9 UTM parameters in Google Analytics 4, dimension mappings, character limits, encoding rules, and reporting caveats.

13 min read • Reviewed September 23, 2026

Supporting Cluster Guides

Diagram showing how utm_source values map directly to traffic origin platforms in GA4 acquisition reports
Taxonomy 7 min read

What Is utm_source? Naming Standards, Taxonomy & Common Mistakes

Learn what utm_source is, how Google Analytics 4 uses it to determine traffic origin, approved naming conventions, and common mistakes that split reporting.

Read Guide → September 23, 2026
Decision tree illustrating how GA4 routes various utm_medium strings into Default Channel Groups
Taxonomy 8 min read

What Is utm_medium? GA4 Default Channel Grouping Rules & Standards

Understand utm_medium and how GA4 uses it to classify sessions into Default Channel Groups. Avoid Unassigned traffic with exact medium naming rules.

Read Guide → September 23, 2026
Taxonomy block diagram illustrating the structured tokens that compose an enterprise utm_campaign string
Taxonomy 8 min read

What Is utm_campaign? Campaign Naming Frameworks, IDs & Taxonomy

Learn how to structure utm_campaign for clear GA4 reporting. Discover formula frameworks, campaign IDs (utm_id), delimiter best practices, and real examples.

Read Guide → September 23, 2026