UTM Builder
Add UTM parameters to any link so your analytics can tell where traffic came from. Handles URLs that already have query strings, which is where hand-built UTMs usually break.
Free, no signup, and everything is calculated in your browser.
What each parameter is for
utm_source is where the traffic came from (newsletter, twitter, partner-site). utm_medium is the channel type (email, social, cpc). utm_campaign names the initiative.
utm_term and utm_content are optional — term for paid keywords, content for distinguishing two links in the same email.
Keep them lowercase and consistent. Analytics tools treat Newsletter and newsletter as different sources, which quietly splits your reporting in half.
Questions people ask
Do UTM parameters affect SEO?
Not directly, but tagged URLs can create duplicate crawlable versions of a page. Use them on links you share, not on internal navigation, and set a canonical URL on the page.
Is my data sent anywhere?
No. The URL is assembled in your browser and never leaves it. Nothing here requires an account.
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