Free tool

UTM builder

Paste a page, pick where the link is going, and copy a tagged URL. It runs in your browser; nothing is sent anywhere.

Page URL

Presets

Source utm_sourceWho sent them: the site, newsletter or platform.Medium utm_mediumWhat kind of link: email, social, cpc, referral.Campaign utm_campaignThe launch, offer or post this belongs to.Term utm_termOptional. The paid keyword.Content utm_contentOptional. Which link or creative, to tell two apart.

Your link

Fill in the page URL and a source.

Tagged links are half the job

Pathrail shows the revenue behind every utm_campaign, not just the clicks, and joins it to the payment that came later.

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Keeping UTMs clean

Pick one spelling for each source and medium and stick to it. Lowercase with underscores is the safest: it survives copy and paste, never needs escaping, and reads the same in every report.

Use utm_source for who sent the visit (newsletter, linkedin, a partner's name) and utm_medium for the kind of link (email, social, cpc). Analytics tools group channels mostly by medium, so a paid ad tagged as social lands in the wrong channel.

Don't tag links between your own pages. A UTM on an internal link starts a new attribution and hides where the visitor really came from.