UTM Link Builder | Free GA4 UTM Tracking Tool
Last updated: 2026-06
Tip: shorten this URL with 連 and the UTM flows into your click analytics; add /suffix to split channels further.
To track traffic sources in GA4, just use the tool above: enter your destination URL, then fill in utm_source, utm_medium, utm_campaign, and optionally utm_term and utm_content. The tool builds a UTM-tagged URL live and lets you copy it in one click, no login required. Below, we explain what UTM parameters are, how GA4 uses each one, and why shortening that long link with 連 still passes the UTM tracking straight through to your click analytics.
What UTM parameters are
UTM parameters are a set of query strings added to the end of a URL that tell your analytics tool where a visitor came from and which campaign brought them in. For example, appending utm_source=facebook&utm_medium=social&utm_campaign=summer means that when someone clicks the link, GA4 can attribute that visit to the right source and campaign.
The parameters don't change what the visitor sees on the page; they just let you tell traffic apart in your reports. Without UTM, a lot of traffic gets bucketed as direct/(none) or generic referral, and you can't tell which post, which email, or which ad actually delivered results.
What each of the five parameters means in GA4
utm_source: where the traffic comes from, e.g. facebook, google, newsletter. Answers which platform.
utm_medium: the type of channel, e.g. social, cpc, email. Answers how they arrived.
utm_campaign: the campaign name, e.g. summer_sale, grouping all links for one campaign so you can compare them together.
utm_term: used mainly for paid search to record the keyword tied to the link.
utm_content: distinguishes different versions of links within the same campaign, e.g. a top button vs a bottom link in the same email, for A/B comparison.
In GA4 these values map to dimensions like session source / medium / campaign, so you can break down and compare performance by them in your reports.
Shorten with 連 and the UTM still reaches your click analytics
UTM links are often long and ugly, which looks bad pasted in social posts or printed on materials. You can take the UTM-tagged URL the tool above builds and shorten it into a clean short link with 連.
When someone clicks the short link, 連 redirects them to your original full destination URL with the UTM parameters carried over intact, so the source / medium / campaign attribution on the GA4 side works exactly as normal.
On top of that, 連 adds its own /suffix source tracking inside its click analytics, so you can also tell different placements apart at the shortening layer. That's an extra layer of click data beyond standard GA4 UTM. All of it is stored in your own Cloudflare D1, not a third-party cloud.
FAQ
Does this UTM link builder cost anything or need a login?
Building a UTM-tagged link is completely free and needs no login. Just use the tool above: enter your destination URL plus utm_source, utm_medium, utm_campaign and so on, and it assembles the link live for you to copy and use. You'd only reach for 連's short-link feature if you then want to shorten that long URL while keeping the UTM and getting click analytics.
Will GA4 still pick up my UTM after shortening?
Yes. When you shorten with 連, the short link simply redirects the clicker to your original UTM-tagged destination URL, and the UTM parameters are passed through intact. So the page the visitor lands on still carries the source / medium / campaign you set, and GA4 attributes the source and campaign as usual, with nothing lost just because a short link sits in the middle.
Are utm_term and utm_content required?
No. The core three are source, medium and campaign, which answer where from, which channel, and which campaign. utm_term is mostly for recording keywords in paid search; utm_content distinguishes different versions of links in the same campaign (e.g. top button vs bottom link in one email) for A/B testing. If you don't need them, leave them blank and the tool won't push empty fields into the URL.
How is 連's /suffix source tracking different from UTM?
UTM is a standard set of parameters read by analytics tools like GA4 and stored in your site analytics. 連's /suffix source tracking lives inside 連's own click analytics, letting you tell placements apart at the short-link layer itself. You can use both: UTM handles attribution on the landing-page side, /suffix splits sources on the short-link click side, giving you a second set of data to cross-check.