UTM Builder Online

Google Analytics and GA4 can only tell you which campaigns are driving traffic if you add UTM parameters to your links. Building these manually is error-prone — a typo in utm_source or an inconsistently capitalised campaign name creates fragmented data in your reports. This tool builds correctly formatted tracking URLs.

How it works

You enter your destination URL and fill in the UTM parameters. The tool assembles the final URL with correctly percent-encoded parameter values and appends them as a query string. Everything runs client-side — your URLs aren't sent anywhere.

How to use it

1. Enter your Destination URL (the page you're linking to)
2. Fill in the UTM parameters:
   • Source — where the traffic is coming from (e.g. google, newsletter, twitter)
   • Medium — the marketing channel (e.g. cpc, email, social)
   • Campaign — the campaign name (e.g. summer_sale, product_launch)
   • Term (optional) — paid keyword, for search ads
   • Content (optional) — for A/B testing different ad variations
3. Copy the generated URL

A few things worth knowing

• Be consistent with naming: Analytics groups by exact string match, so Email, email, and e-mail appear as three separate sources. Decide on a naming convention and stick to it
• Source and medium are required: Campaign is also required by convention (GA4 will still track without it, but your reports will be harder to read)
• Don't use UTM parameters on internal links: If you add UTM parameters to links between pages on your own site, you'll reset the session source in Analytics and pollute your data

FAQ

What does UTM stand for? Urchin Tracking Module. Urchin was the analytics company Google acquired in 2005 to build Google Analytics, and the UTM parameter format came from their original product.

Do UTM parameters affect SEO? No — Google's crawler ignores UTM parameters for ranking purposes. But if the same page is accessible with and without UTM parameters, use canonical tags to tell Google which version is the primary URL.

What's the difference between utm_source and utm_medium? Source is who sent the traffic (e.g. google, mailchimp). Medium is how (e.g. cpc, email, organic). Think of it as: Medium = channel type, Source = specific origin within that channel.

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