Free tool
UTM builder for GA4 and paid campaigns
Build a campaign URL with consistent lowercase parameters, check it before it ships, and copy it in one click. Includes the source and medium conventions GA4 actually expects, and the mistakes that split a campaign into duplicate rows.
- No account needed
- Runs in your browser
- Nothing stored on our servers
marketers, founders and analytics teams
UTM Builder
Runs entirely in this browser. No account, no email gate, nothing stored.
- Free
- No signup
- Browser only
Campaign parameters
Your campaign URL
https://nexlane.online/services/ai-automation?utm_source=linkedin&utm_medium=social&utm_campaign=cloud-launch-q4&utm_content=hero-linkParameters in this URL
- utm_source
- utm_medium
- social
- utm_campaign
- cloud-launch-q4
- utm_content
- hero-link
What each parameter does in GA4
| Parameter | Means | Example | Notes |
|---|---|---|---|
| utm_source | Source | linkedin, google, newsletter | The specific place the click came from. |
| utm_medium | Medium | cpc, email, social, referral | The type of traffic, not the name of the platform. |
| utm_campaign | Campaign | cloud-launch-q4 | The initiative. Keep it stable across channels so the campaign can be compared. |
| utm_term | Term | n8n-consultant | Paid keyword. Optional and usually only used for search. |
| utm_content | Content | hero-link, footer-cta | Which link or creative was clicked, for A/B comparison. |
What this works out
- A validated campaign URL with the five standard UTM parameters
- Warnings for uppercase letters, spaces and missing source or medium
- A reference of common source and medium values that report cleanly in GA4
- Existing query parameters preserved rather than overwritten
If the result raises a question you would rather not answer alone, the related services below are the parts of the business this tool usually points at. There is no obligation attached to any of it.
Questions about this tool
Does case matter in UTM parameters?
Yes, and it is the most common cause of a campaign appearing twice in reports. GA4 treats Google, google and GOOGLE as three different sources. Everything here is lowercased automatically because there is no good reason for a campaign tag to contain a capital letter.
Is utm_source the same as the traffic source in GA4?
Not exactly. GA4 uses the last non-direct click by default and can override your parameters through channel grouping or ads auto-tagging. UTM values populate the session source and medium, and the channel group is then derived from them. If you run Google Ads, gclid auto-tagging takes precedence for that traffic.
Should I tag internal links between my own pages?
No. Internal UTMs start a new session and overwrite the original source, which makes it look as though a visitor arrived from your newsletter when they actually came from organic search. Tag outbound campaigns only.
Tell us where the manual work is
A 30-minute call. We map the process, tell you what we would automate or build first, and what it costs. No retainer before you agree the scope.
- No retainer before scope is agreed
- Written plan you can act on alone
- Worldwide delivery, on your hours