UTM Builder for GA4 & Ads

Simple steps, clean output. Presets for popular channels, guardrails for naming, and advanced GA4 parameters.

Choose a preset & enter your landing URL

Base URL *

We’ll keep your existing query string and append UTMs.

Add core campaign parameters

utm_source

Platform / referrer sending traffic.

utm_medium

Channel type. GA4 groups by common mediums.

utm_campaign

Name of initiative; short & consistent.

utm_term

Optional: keyword or audience.

utm_content

Optional: creative or placement variant.

(Optional) Advanced GA4 fields

utm_id

Internal ID to unify reports across platforms.

utm_source_platform

Ad network / platform.

utm_creative_format utm_marketing_tactic

GA4-friendly mediums include cpc, paid_social, social, email, affiliate, referral. Learn more

Naming guardrails (consistency & safety)

Lowercase paramsTrim spacesForce HTTPS

Space style

Live preview

Your URL will appear here…

Privacy-friendly — runs in your browser.

Best practices

source = platform (google, facebook), medium = channel (cpc, paid_social, email).
Use lowercase + consistent separators (dashes or underscores).
For GA4, consider utm_id and utm_source_platform for cleaner attribution.

Advanced: affiliates, deep links & attribution

Affiliate link essentials

Use rel=sponsored for paid/affiliate links; rel=nofollow is OK too, but sponsored is preferred.
Disclose clearly and near the link (“This post contains affiliate links…”).
For Amazon Associates, include their required Associate ID language and a clear disclosure.
Prefer readable anchors; avoid cloaking that hides destination terms in violation of network rules.

See: Google’s outbound link guidance, FTC endorsements, Amazon Associates policy.

SubIDs for campaign slices

Most networks let you append your own tracking keys (often called Sub ID / aff_sub / sid). Use these to encode source, placement, creative, or audience for granular reporting.

Keep SubIDs short (≤32 chars), lowercase, and alphanumeric.
Example: &aff_sub=ig_reels&aff_sub2=ugc_a
Impact: Sub ID / Shared ID supported; ShareASale: afftrack/tracking fields.

GA4 & Google Ads (GCLID)

Enable auto-tagging in Google Ads (adds gclid to URLs) for better Ads ↔ GA4 linking.
You can still use UTMs; in GA4 you may allow manual tagging to override when needed.
Stick to standard mediums: cpc, paid_social, email, affiliate, referral.

Deep links to apps

iOS: set up Universal Links and handle NSUserActivity in-app.
Android: use App Links with verified domains (assetlinks.json) and intent-filter rules.
Always include a safe web fallback for users without the app.

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