Untagged links are where attribution goes to die — traffic lands in "direct / none" and you never learn what worked. Build clean, consistent UTM links so GA4 can tell you exactly which campaign drove the result.
Fill the fields — the tagged URL updates live below. Keep values lowercase and consistent (e.g. always facebook, never FB).
The point isn't the link — it's the convention. UTMs only work if everyone tags the same way every time. Pick one spelling and case for each source and medium and never deviate; facebook / cpc and FB / CPC become two different sources in GA4 and quietly split your data. Agree the naming rules once, then use this builder to enforce them.
Clean links don't help if the conversion events on the other end are broken. A free foundation audit checks your GA4 setup end to end — tagging, events, and attribution — so the traffic you tag actually gets credited correctly.
Request a free audit