What are UTM parameters?

UTMs are query tags (utm_source, utm_medium, utm_campaign, utm_term, utm_content) appended to a URL so Google Analytics can attribute traffic to the exact post, ad or email that drove it.

Which UTMs are required?

Only utm_source, utm_medium and utm_campaign are required for clean GA4 reports. Term tracks paid keywords, content distinguishes A/B variants of the same placement.

Should I use uppercase or spaces in UTMs?

No. GA4 treats UTMs as case-sensitive, so 'Email' and 'email' split into two rows. Use lowercase, hyphens instead of spaces — this builder enforces that automatically.

Will UTMs break my URL?

Not when encoded correctly. This builder percent-encodes values, preserves existing query strings and fragments (#), and validates the base URL before generating.

How do I keep UTM naming consistent across my team?

Agree on a short list of sources (e.g. newsletter, linkedin, google) and mediums (email, social, cpc). Use the presets here, then shorten the final URL with Slugy so long campaign links never appear in public.

Free UTM Builder

Build clean campaign URLs with validated source, medium, campaign, term and content. Auto-formatted, encoded and ready for GA4.

No loginGA4 readyAuto-encoded

1 · Destination

Website URL

2 · Required tags

utm_source

utm_medium

utm_campaign

e.g. spring-launch, black-friday, ebook-download

3 · Optional tags

utm_term (keyword)

utm_content (variant)

Result

90 chars

https://slugy.co/pricing?utm_source=newsletter&utm_medium=email&utm_campaign=spring-launch

utm_sourcenewsletter

utm_mediumemail

utm_campaignspring-launch

Open test link

Long links look spammy in public. Shorten with Slugy to keep the tags but hide the clutter.

01

Paste & pick

Drop in any URL, then tap presets or a one-click template.

02

Validated live

Missing tags, uppercase and spaces are flagged before you copy.

03

Copy & measure

Paste into ads or email — attribution flows straight into GA4.

UTM cheat sheet

The five tags GA4 understands — and what to put in each.

Parameter	Means	Example
utm_source	Where traffic comes from	newsletter · google · linkedin
utm_medium	How it reaches you	email · cpc · social · qr
utm_campaign	Which campaign	spring-launch · black-friday
utm_term	Paid keyword / audience	url-shortener
utm_content	Variant / placement	header-cta · ad-variant-b

FAQ