What are UTM parameters and why do I need them?

UTM parameters are tags added to URLs so analytics tools can track where traffic comes from.

Which UTM parameters are required?

utm_source, utm_medium, and utm_campaign are required. utm_term, utm_content, and utm_id are optional.

Do UTM parameters affect SEO?

Only if Google indexes the UTM URL as a separate page. Use canonical tags to prevent this.

What is the best naming convention for UTM parameters?

Use lowercase and underscores. Be consistent so analytics reports stay clean.

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UTM Parameter Builder

Build campaign tracking URLs with UTM parameters in seconds. Preview the full link, validate each field, and copy it ready to use.

All SEO & Marketing Tools

Quick presets:

Campaign URL Settings

Website URL Required

The full page URL you are promoting (must start with https://)

Campaign Source Required

Where traffic comes from (e.g. google, newsletter)

Campaign Medium Required

The marketing channel (e.g. cpc, email, social)

Campaign Name Required

Name your campaign (e.g. summer_sale_2025)

Campaign Term Optional

Paid keyword (for paid search campaigns)

Campaign Content Optional

Differentiates ads (e.g. banner_v1, cta_blue)

Campaign ID Optional

Unique campaign ID for GA4 (utm_id)

Generated UTM URL

Fill in the fields above to generate your UTM URL.

Recent URLs

No saved URLs yet.

About This Tool

How this UTM builder assembles, validates and remembers your campaign links

UTM parameters are a convention, not a protocol enforced by browsers, they exist only because Google Analytics and most other analytics platforms agree to read five specific query string keys and attribute a visit’s traffic source based on their values. This tool runs entirely client side. It builds the query string in your browser, validates the required fields before letting you copy anything, and stores your recent links in your browser’s own localStorage, never on a server.

The five standard parameters, plus one extra

Parameter	Required	Purpose
utm_source	Yes	The referrer, for example google, newsletter, or facebook.
utm_medium	Yes	The marketing medium, for example cpc, email, or social.
utm_campaign	Yes	The specific campaign, product, or promotion name.
utm_term	No	Paid search keyword, mainly used with Google Ads.
utm_content	No	Distinguishes similar content or links within the same ad or email, useful for A/B testing.
utm_id	No	A newer addition tying the link to a specific campaign ID in Google Ads or Analytics, not part of the original five but included here since it appears in current Google documentation.

How the link actually gets built

Step 1 Validate the required fields The base URL must start with http:// or https://, and source, medium and campaign must all be non-empty, checked with regex and simple truthy tests before the Copy or Save buttons will do anything.

Step 2 Choose the right separator The tool checks whether your base URL already contains a question mark. If it does, parameters get appended with an ampersand, if not, the first parameter starts with a question mark, so UTM tags never break an existing query string.

Step 3 Encode every value Each field value is trimmed and passed through encodeURIComponent, so spaces, ampersands, and other special characters in a campaign name never corrupt the resulting URL.

Step 4 Assemble in a fixed order Parameters are always appended in the same order: source, medium, campaign, then term, content and id if present, matching the conventional order used across Google’s own documentation and most analytics dashboards.

// buildUrl(), adapted from source var sep = url.indexOf(‘?’) !== -1 ? ‘&’ : ‘?’; var params = []; params.push(‘utm_source=’ + encode(source)); params.push(‘utm_medium=’ + encode(medium)); params.push(‘utm_campaign=’ + encode(campaign)); if (term) params.push(‘utm_term=’ + encode(term)); if (content) params.push(‘utm_content=’ + encode(content)); if (id) params.push(‘utm_id=’ + encode(id)); return url + sep + params.join(‘&’); // sample output https://example.com/landing?utm_source=newsletter&utm_medium=email&utm_campaign=weekly_newsletter

Consistency matters more than correctness here. There is no validation that stops you from typing Facebook in one link and facebook in the next, and most analytics platforms treat UTM values as case sensitive strings, so those two would show up as separate rows in your source and medium reports. This tool cannot catch that kind of drift for you, it is worth agreeing on a fixed lowercase naming convention across your team before generating links at scale, and the five built-in presets, email, social, paid, newsletter and affiliate, exist mainly to nudge you toward one.

Saved history

Clicking Save writes the finished URL and a timestamp into a localStorage array capped at the ten most recent entries, so you can revisit or copy a link you built earlier without regenerating it from scratch.

CSV export

The saved history can be exported as a two column CSV of URL and timestamp, useful for pasting into a campaign tracking spreadsheet alongside spend and performance data.

Pure client-side URL builder History stored in localStorage only Five standard parameters plus utm_id

Campaign tracking references

Google Analytics’ guide to custom campaign parameters is the closest thing to an authoritative source on what each UTM field means and how it is used in reporting.
Google’s own Campaign URL Builder is the reference implementation this convention is built around.

Attribution this makes possible

Tagging links for a paid search campaign so spend can be tied back to conversions in Analytics, building distinct tracked links for each email newsletter send, generating separate utm_content values to A/B test two versions of the same social ad, and keeping a running, exportable log of every campaign link a small marketing team has generated this quarter.

Common Questions

FAQs: UTM Parameter Builder

UTM parameters are tags you add to a URL so Google Analytics can track where your traffic comes from. Without them, clicks from emails, paid ads, and social posts often appear as direct traffic, making it impossible to measure campaign performance accurately.

utm_source, utm_medium, and utm_campaign are required for GA4 to attribute the session correctly. utm_term is used for paid keywords and utm_content is used to distinguish between different ads or links within the same campaign. utm_id is a GA4-specific parameter for linking campaigns to your ad platform.

Only if you share the UTM URL publicly and Google indexes it as a separate page. To prevent this, make sure your site has a canonical tag pointing to the clean URL. UTM parameters on links you control (emails, ads, social) never affect organic rankings directly.

Use lowercase and underscores instead of spaces or hyphens. Be consistent — google and Google are treated as two separate sources in analytics. Agree on conventions with your team before you start a campaign so your reports stay clean.

Yes. UTM parameters are a universal standard supported by Google Analytics, GA4, Matomo, Plausible, HubSpot, Mixpanel, and most other analytics tools. The parameter names are always the same regardless of platform.

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