How to track content campaigns using UTM parameters for free

Executive overview

Marketers spend across multiple channels but can't tell which link drove which result. UTM parameters — small text snippets appended to URLs — tag each link with source, medium, and campaign data that Google Analytics records automatically.

Build a tagged URL with Google's free Campaign URL Builder, post it, then filter GA4's traffic acquisition report to see visit counts, engagement metrics, and conversions — filtered by any UTM dimension.

Consistent naming is the single biggest factor in whether your UTM data is usable.

What UTMs are and how they work

• UTM stands for Urchin Tracking Module, named after the company Google acquired in 2005 to create GA.
• UTMs append to a destination URL as query parameters — they don't change the page, only the data GA records.
• Five parameters: source (specific referrer), medium (channel type), campaign (campaign name), term (keyword or audience), content (ad creative or variant).
• Source, medium, and campaign are the core fields; term and content are optional and mainly used for paid campaigns.
• Organic posts can still use term to distinguish individual contributors or posts.

Building a UTM link

• Use Google's free Campaign URL Builder (linked in video description).
• Source: the specific referrer (e.g. linkedin).
• Medium: the channel type (e.g. social, email, cpc).
• Campaign: one shared name used across every channel promoting that initiative (e.g. ga4_course) — must be identical across all links.
• The builder outputs a complete tagged URL; shorten with Bitly if sharing outside a platform that auto-shortens.

Analysing results in GA4

• Go to Reports > Traffic acquisition or User acquisition.
• Set the primary dimension to Session campaign (or source, medium, term, content).
• Apply a filter to isolate a specific campaign.
• GA4 shows traffic volume plus engagement: events completed, average session duration, bounce rate.
• Any UTM parameter can be used as a filter — drill from campaign down to individual term.

Three mistakes to avoid

• Inconsistent capitalisation: Instagram and instagram appear as two separate sources; use all-lowercase across every link.
• Over-parameterising: skip term and content if you won't act on that data — unused parameters add noise without insight.
• Partial coverage: if some links in a campaign lack UTMs, a share of traffic is unattributed; tag every link in a campaign.