No. URL construction is pure string manipulation via the URL constructor, all in the browser. Internal or unpublished URLs are safe.

What's the difference between utm_source / utm_medium / utm_campaign?

utm_source = *where it came from* (newsletter / twitter / google — individual sources). utm_medium = *type of channel* (email / social / cpc / organic — categories). utm_campaign = *which campaign* (spring_sale_2026 — name). GA recommends all three as required.

When do I use utm_term vs utm_content?

utm_term records the paid-search keyword (Google Ads). utm_content identifies the creative variation in an A/B test (hero_banner_red vs hero_banner_blue). Both are optional and omitted if blank.

What do "Lowercase values" and "Spaces" do?

GA treats utm_* values case-sensitively, so "Newsletter" and "newsletter" become two campaigns. Lowercasing normalises this. URLs can't contain raw spaces, so we replace them with `_` (Google-recommended), `+` (form-style), or `%20` (RFC 3986).

What if the base URL already has utm_* parameters?

Existing utm_* are *replaced* by the new values. Non-UTM query parameters (e.g. `?ref=abc`) and `#fragment` are preserved as-is.

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UTM URL Builder

Build campaign-tracking URLs for Google Analytics / GA4 with utm_source / utm_medium / utm_campaign / utm_term / utm_content / utm_id parameters. Existing query strings and `#fragment` are preserved, blank fields are omitted. Runs entirely in your browser — your URL is never uploaded.

developerURLgenerate

How to use

Enter a base URL, fill in utm_source / utm_medium / utm_campaign (required), and optionally utm_term / utm_content / utm_id. The tool produces a campaign-tracking URL ready for Google Analytics / GA4. The "Lowercase" and "Space handling (_ / + / %20)" options normalise values to avoid case / encoding mismatches. Existing query strings and `#fragment` are preserved, and blank utm_* fields are omitted. Everything runs in your browser — safe for internal or unpublished campaign URLs.

FAQ

Is my URL uploaded?: No. URL construction is pure string manipulation via the URL constructor, all in the browser. Internal or unpublished URLs are safe.
What's the difference between utm_source / utm_medium / utm_campaign?: utm_source = *where it came from* (newsletter / twitter / google — individual sources). utm_medium = *type of channel* (email / social / cpc / organic — categories). utm_campaign = *which campaign* (spring_sale_2026 — name). GA recommends all three as required.
When do I use utm_term vs utm_content?: utm_term records the paid-search keyword (Google Ads). utm_content identifies the creative variation in an A/B test (hero_banner_red vs hero_banner_blue). Both are optional and omitted if blank.
What do "Lowercase values" and "Spaces" do?: GA treats utm_* values case-sensitively, so "Newsletter" and "newsletter" become two campaigns. Lowercasing normalises this. URLs can't contain raw spaces, so we replace them with `_` (Google-recommended), `+` (form-style), or `%20` (RFC 3986).
What if the base URL already has utm_* parameters?: Existing utm_* are *replaced* by the new values. Non-UTM query parameters (e.g. `?ref=abc`) and `#fragment` are preserved as-is.

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