UTM Link Builder

UTM parameters are small tags appended to a link that tell your analytics tool where a click came from. utm_source carries the traffic source (google, facebook, newsletter), utm_medium the channel type (cpc, email, social) and utm_campaign the campaign name. Without this trio, Google Analytics counts many clicks as "direct" or generic "referral" traffic, and you can never tell which ad, newsletter or post actually drives sales.

The most common UTM mistake is inconsistent naming. Analytics is case-sensitive: "Facebook", "facebook" and "FB" show up as three separate sources and fragment your data. The rule is simple: always lowercase, dashes instead of spaces, plain ASCII, and the exact same name for the same channel every time. The "auto-fix" option in this tool handles lowercasing and dashes for you; keeping a shared naming sheet across your team is the most robust long-term solution.

In GA4, UTM data lives under Reports → Acquisition → Traffic acquisition; the "Session source / medium" dimension shows source and medium values, and "Session campaign" shows the campaign name. utm_term and utm_content can be added as separate dimensions in Explore and custom reports. Data for a freshly tagged link usually starts flowing within a few hours; full reports can take 24-48 hours to settle. Always open the generated link once in your browser before publishing it.