Analytics & Measurement
UTM Parameters
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What is UTM Parameters?
UTM parameters (Urchin Tracking Module parameters) are tags appended to URLs that allow analytics platforms to track the source, medium, campaign, content, and keyword associated with inbound traffic. They take the form of query string key-value pairs — for example, `?utm_source=newsletter&utm_medium=email&utm_campaign=spring-launch` — and are passed to Google Analytics when a user clicks a tagged link.
In SEO, UTM parameters are most commonly used to track traffic from non-organic sources such as email campaigns, social media posts, and paid placements. They are also used to measure the effectiveness of content syndication or to segment traffic from specific promotional campaigns that would otherwise be lumped together under the same channel in analytics reports.
Why it matters for SEO
Without UTM parameters, analytics platforms rely on referrer headers to attribute traffic, which can be inaccurate or lost due to HTTPS redirects, privacy settings, or cross-domain tracking gaps. Proper UTM tagging ensures that non-organic campaigns are correctly attributed and do not pollute the organic channel data in Google Analytics — keeping SEO reporting clean and accurate.
Example
A newsletter links to a new guide as https://example.com/guide?utm_source=newsletter&utm_medium=email&utm_campaign=march-issue. In analytics those visits appear under the email channel and the march-issue campaign instead of being lumped into direct traffic. The same tags should never be added to internal links on your own site, because that overwrites the original source of the visit.
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