UTM tags are the vocabulary your analytics speaks; a convention is agreeing to spell the words one way. Without one, “Facebook”, “facebook”, and “fb” fragment one channel into three, and reports quietly stop meaning anything.
The mental model
- utm_source answers WHERE the click came from: google, facebook, newsletter, a partner’s name.
- utm_medium answers WHAT KIND of channel: cpc, email, social, print.
- utm_campaign answers WHICH push: spring-sale-202603. Add the date; a year later you’ll thank yourself.
- term and content are optional refinements. Paid keyword, and which creative variant.
The three rules that do all the work
Lowercase everything, hyphens for spaces, and tag every link you distribute. Including the QR code on the truck and the link in your email signature. Consistency is the entire feature; the values themselves matter less than never varying them.
We keep ours as a one-page sheet anyone making links can follow. It’s free, take it. And the link builder enforces the formatting automatically.