UTM Campaign URL Builder

Append UTM parameters to build trackable URLs.

Website URL

utm_source *

utm_medium *

utm_campaign *

utm_term

utm_content

URL Length: 91Params Count: 3

Tracking Campaigns with UTM Parameters

UTM parameters are query-string tags appended to a link so analytics tools can attribute traffic to a specific campaign. utm_source, utm_medium, and utm_campaign are the core three; term and content are optional. This builder URL-encodes values correctly and preserves any existing query parameters on your base URL — all generated locally in your browser.

Built and maintained by Meet Shah · Last updated 28 July 2026

What this tool is used for

Building a trackable link for a campaign with consistent parameter naming.
Producing a set of links that differ only by source so attribution stays clean.
Checking that an existing link's parameters are spelled the way your analytics expects.
Adding tracking to a link for a one-off send.
Producing links for several channels from one template.

Frequently Asked Questions

Which parameters are required?: `utm_source`, `utm_medium` and `utm_campaign`. Google Analytics will not attribute a session to a campaign without at least a source, and a medium-less hit falls into "(not set)". `utm_term` and `utm_content` are optional and used for keyword and A/B variant.
Are the values case-sensitive?: Yes, and this is the most common way campaign data fragments. `Email`, `email` and `EMAIL` become three separate rows in every report. Pick lower-case, no spaces, and write the convention down — analytics tools will not merge them for you afterwards.
What is the difference between source and medium?: Source is *where* — `newsletter`, `google`, `partner-site`. Medium is *how* — `email`, `cpc`, `social`, `referral`. The pair is what GA4 maps to its default channel groupings, so an unrecognised medium quietly lands your traffic in "Unassigned".
Should I tag internal links?: Never. A UTM-tagged internal link starts a *new* session and overwrites the original attribution, so a visitor who arrived from a paid ad is re-credited to your own banner. Use it only on links arriving from outside your domain.
Do the tags leak anywhere I should worry about?: They are visible in the address bar, in shared links, and in referrer headers to third parties. Never put an email address, a customer ID or anything personal in a UTM value — it becomes personal data sitting in your analytics and in other people's logs.
Why do my tagged URLs create duplicate pages in analytics?: They should not — analytics platforms strip UTM parameters before aggregating by page. Duplicates usually mean a custom report grouping by full URL, or a tool that treats the query string as part of the identity.
Do UTM parameters affect SEO?: They can, by creating multiple crawlable URLs for the same page. A self-referencing canonical tag on the clean URL resolves it, which is why tagged links belong in campaigns you control rather than in site navigation.

Common errors and gotchas

Using inconsistent case, where `Email` and `email` become two separate sources in reports.
Tagging internal links, which overwrites the original session's attribution.
Putting personal data in a parameter, which then appears in analytics and server logs.
Omitting the medium, which is what most reports group by.
Leaving tracking parameters on a canonical URL, which can fragment how the page is indexed.