UTM builder
For Google Analytics 4
Build links with clean, consistent UTM parameters so you know which campaigns, channels and ads bring you visits.
Frequently asked questions
What are UTM parameters?
Tags added to the end of a URL so Google Analytics knows where each visit comes from: the source, the medium and the campaign.
Does capitalisation matter?
Yes. GA4 treats “Facebook” and “facebook” as different sources. That’s why the tool normalises everything to lowercase without accents.
Should I use UTMs on internal links?
No. On internal links they overwrite the real origin of the visit and skew your data. Only use them on links that bring people to your site from elsewhere.
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