The essentials of UTM tagging
- The concept: Add codes to your links to identify the source
- The 3 essentials : utm_source, utm_medium, utm_campaign
- Utility: Differentiate between newsletter and social traffic, SEA...
- Profit : Measuring the profitability of each channel
Without UTM tagging, all your traffic is mixed up in GA4. With the right parameters, every click tells a precise story: where it came from, which campaign generated it, and whether it converted.
Essential UTM parameters
UTMs are codes added at the end of your URLs. They serve as tags to tell GA4 the exact origin of each visitor. Three parameters are essential for effective tracking.
The 5 UTM parameters
Mandatory
- utm_source: origin (linkedin, newsletter)
- utm_medium: channel (email, social, cpc)
- utm_campaign : operation name
Optional
- utm_term: advertising keywords
- utm_content: differentiate links
How GA4 uses this data
As soon as a visitor clicks on a tagged link, GA4 decodes the UTMs and classifies the visit in the right category. You'll find this information in acquisition reports, with the possibility of cross-referencing sources and conversions.
Best practices
Consistency is essential. Always use lower case, replace spaces with hyphens, and centralize your naming conventions. A UTM URL generator (like Google's) avoids typing errors.