UTM Parameter Decoder

Paste any URL with UTM parameters and see exactly what each tracking tag means.

URL to decode

Total Parameters: 0UTM Tags Found: 0Clean URL Ready: No

Clean URL (tracking stripped)

This is an email campaign from newsletter for spring-sale-2026.

Parameters (5)

Parameter	Value	What it means
utm_source	newsletter	Where traffic comes from
utm_medium	email	The marketing channel
utm_campaign	spring-sale-2026	The specific campaign
utm_content	cta-button-hero	Differentiates ads for A/B testing
utm_term	developer tools	Paid search keyword

About UTM Parameter Decoder

UTM parameters are query-string tags appended to URLs so analytics platforms like Google Analytics can attribute sessions to specific campaigns. This decoder parses any URL, explains what each tracking parameter means, and strips them to reveal the clean destination URL — all processed locally in your browser. Nothing is sent to any server.

Built and maintained by Meet Shah · Last updated 19 July 2026

What this tool is used for

Working out where a link in your inbox or a referral actually came from.
Getting the clean URL back from a heavily tagged marketing link before sharing it.
Checking that a campaign's parameters are spelled the way your analytics expects.
Auditing a partner's links to see how they are attributing your traffic.
Explaining to a colleague what each parameter in a link is doing.

Frequently Asked Questions

What do the five UTM parameters mean?: `utm_source` is where the traffic came from (google, newsletter), `utm_medium` is the channel type (cpc, email, social), `utm_campaign` names the initiative, `utm_term` records a paid keyword, and `utm_content` distinguishes two links in the same email or ad.
Are the values case-sensitive?: Yes, and this is where UTM data most often goes wrong. `Email`, `email` and `EMAIL` become three separate rows in every report, silently splitting one channel into thirds. Pick lower-case as a convention and enforce it, because nothing in the system will.
Which parameters are actually required?: Historically `utm_source` and `utm_medium`; Google Analytics 4 is more forgiving but still needs source to attribute anything. `utm_campaign` is what makes a report readable. `term` and `content` are optional and mostly matter for paid search and A/B tests respectively.
Should I put UTM parameters on internal links?: No — it restarts the session attribution and overwrites the original source, so a visitor who arrived from a genuine campaign is re-attributed to your own site. Internal link tracking is what events are for. This is the most damaging UTM mistake because it corrupts data you cannot recover.
Do the parameters affect SEO?: They create distinct URLs, so the same page becomes several — which is why the canonical tag matters on any page reachable with tracking parameters. Google generally handles it well, but a page with dozens of tagged variants and no canonical is splitting its own signals.

Common errors and gotchas

Sharing a tagged link onward, which attributes someone else's visit to a campaign they never saw.
Assuming the parameters are accurate, since anyone can put anything in them.
Stripping parameters from a link you were asked to use, which breaks the attribution deliberately set up.
Overlooking that a tagged URL may be indexed separately from its clean form.
Treating a UTM value as private, when it travels in the URL and lands in every log.