UTM Builder

Free UTM Builder

You spend money on ads, emails, and influencers — then Google Analytics lumps half the clicks under "direct" and you have no idea what worked. UTM parameters fix that: five little tags on your URL that tell GA4 exactly which campaign, channel, and link each visitor came from. Build them here in seconds.

The Five Parameters, Plainly

utm_source — where the click happened: google, newsletter, instagram.
utm_medium — the channel type: cpc, email, social, qr.
utm_campaign — the campaign name: summer_sale. This is the one you'll filter by in reports.
utm_term — optional, for paid search: the keyword that triggered the ad.
utm_content — optional, for A/B tests: which link variant got the click (banner_top vs text_link).

The Two Rules That Save Your Reports

Always lowercase. GA4 treats "Newsletter" and "newsletter" as two different sources, and your reports split in half. Never spaces — use hyphens. This builder checks both and can fix them for you in one click.

Where to See the Results

In GA4, go to Reports → Acquisition → Traffic acquisition, then add "Session campaign" as a secondary dimension. Your tagged links show up within a day or so, attributed to exactly the campaign you named.

Frequently Asked Questions

What is a UTM parameter?

A small tag you add to a URL (like ?utm_source=newsletter) so Google Analytics can tell exactly which campaign and channel each visitor came from — instead of guessing.

Do UTMs work if my URL already has a ? in it?

Yes. The builder detects existing query parameters and appends the UTM tags correctly with & instead of breaking the link.

Should I tag internal links on my own site?

No — UTMs are for traffic coming from outside (ads, emails, social). Tagging your own internal links overwrites the original source and corrupts your attribution.

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