UTM builder: campaign URL generator for GA4

1. Enter the destination URL - the page on your site the campaign points to.
2. Set the three required parameters: utm_source, utm_medium, and utm_campaign.
3. Add term/content if needed for paid keywords or A/B link variants.
4. Standardize the values - lowercase, hyphen/underscore for spaces, consistent naming.
5. Copy the link and use it on your ad, email, or social post - then confirm it lands in the right GA4 channel.

The single biggest cause of messy campaign reporting is inconsistent UTMs. Because analytics treats values as case-sensitive and literal, Facebook, facebook, and FB become three different sources, splitting one channel across three rows. A few rules prevent this:

• Always lowercase. Enforce it (this builder does) so casing never fragments a source.
• Pick one word per concept. Decide on email (not newsletter/e-mail) and stick to it.
• Use a separator convention. Hyphens or underscores - just be consistent (spring-sale-2026).
• Keep a shared spreadsheet of approved source/medium/campaign values so the whole team tags links the same way.

Use UTMs on external links pointing to your site: paid ads, email campaigns, social posts, sponsorships, QR codes, and partner placements. That's exactly what they're designed for - attributing inbound traffic to the campaign that drove it.

Never put UTMs on internal links between your own pages. Doing so overwrites the original attribution (so a visitor who arrived from Google suddenly looks like "internal" traffic) and starts a new session, corrupting your reports. For navigation between your pages, use plain links.

GA4 reads utm_source and utm_medium to assign each session to a default channel - Paid Search, Organic Social, Email, Referral, Display, and so on - and uses utm_campaign to group results within that channel. Using the conventional medium values (the table above) is what makes the channel report accurate; a made-up medium like fb-ad lands in "Unassigned" or the wrong bucket. This builder predicts the GA4 channel live so you can catch a mistake before the campaign ships - because once links are out in the wild, the data they generate can't be re-tagged retroactively.