URL Builder — UTM-tagged campaign URLs in 60 seconds

What is a UTM, and why does it matter?

A UTM (Urchin Tracking Module) parameter is a query-string tag appended to a URL — utm_source, utm_medium, utm_campaign, utm_content, and utm_term — that lets your analytics tool attribute the click to a specific ad, email, or post. The five-parameter convention has been industry-standard since 2005 and is the universal layer that lets Admaxxer (and every other analytics tool) attribute clicks without depending on platform-specific tags like gclid or fbclid.

Admaxxer’s first-party pixel reads UTMs on every pageview and joins them to spend pulled directly from the Meta Marketing API and Google Ads API. The result: blended ROAS, MER, and cohort LTV broken out by campaign, ad set, and creative — without depending on platform-reported numbers. Without UTMs, paid clicks land in the (direct) bucket on /marketing-acquisition and your channel breakdown silently misattributes 30–60% of revenue.

The URL Builder exists so this never happens. Pick a platform, fill three fields, copy the URL. Done.

Platform-by-platform templates

Every platform has a different macro convention — Meta uses {{campaign.name}}, Google uses {campaignid}, TikTok uses __CAMPAIGN_NAME__, Snapchat uses {{campaignName}}, Reddit uses {{CAMPAIGN_NAME}}. Get the syntax wrong and the macro renders literally as part of your URL, which silently breaks attribution. The table below is the canonical mapping. Copy a row, paste it into the destination platform, replace yourstore.com with your storefront domain.

How the URL Builder fits with the rest of Admaxxer

• Deep-link from /marketing-acquisition. Every campaign row on the Marketing Acquisition Summary has a "Tag a new URL" button that opens the URL Builder pre-filled with the campaign’s platform, source, and naming convention. Five seconds from "I see a row" to "I have a tagged URL".
• Connected to your live ad accounts. When you connect Meta Ads or Google Ads, the URL Builder pulls live campaign + ad-set names so the macros expand against your actual taxonomy.
• Validates against the first-party pixel. The Builder checks every generated URL against Admaxxer’s pixel UTM expectations — lowercase source/medium, no spaces in campaign names, no double-encoding — so attribution is clean from the first click.

Best practices the URL Builder enforces

1. Lowercase utm_source and utm_medium. Analytics tools are case-sensitive. Facebook and facebook show up as two separate channels and split your reporting.
2. No spaces. Use hyphens or underscores. Spaces become %20 on the wire and can break downstream regexes.
3. Use platform macros for campaign + ad names. Don’t hand-type the campaign name — use {{campaign.name}} (Meta), {campaignid} (Google), or the platform’s equivalent. If you rename the campaign, the URLs auto-update without re-tagging.
4. Always tag utm_medium as cpc for paid social/search. Even though Meta is technically paid_social and Google is cpc, using cpc across both is the cleanest convention — it lines up with the GA4 default channel grouping and Admaxxer’s blended-MER math.
5. Enable Klaviyo’s account-level UTM tagging. Don’t hand-tag individual emails — turn on the account-wide setting in Klaviyo Settings → UTM Tracking and let it apply to every campaign + flow email automatically.

The deeper playbook lives at /documentation/utm-best-practices, including the full taxonomy guide, the recommended utm_campaign naming pattern, and the “why Google auto-tagging doesn’t replace UTMs” explainer.

Frequently asked

What is a UTM?

A UTM (Urchin Tracking Module) parameter is a query-string tag appended to a URL — utm_source, utm_medium, utm_campaign, utm_content, and utm_term — that lets your analytics tool attribute the click to a specific ad, email, or post. UTMs were originally introduced by Urchin (the company Google bought in 2005 to build Google Analytics), and the five-parameter convention is now industry-wide. Admaxxer's first-party pixel reads UTMs on every pageview and joins them to ad-platform spend so you can see blended ROAS by campaign, ad set, and creative without depending on platform-reported numbers.

How do I tag a Meta campaign?

Paste this template into the Website URL field at the AD level (not the campaign or ad-set level): https://yourstore.com/?utm_source=facebook&utm_medium=cpc&utm_campaign={{campaign.name}}&utm_content={{ad.name}}&utm_term={{adset.name}}. Meta resolves the {{campaign.name}}, {{adset.name}}, and {{ad.name}} macros at impression time, so every click reports the live name verbatim. If you rename the campaign mid-flight, all subsequent clicks pick up the new name without you re-editing the URL. The Admaxxer URL Builder generates this template with your store domain pre-filled.

Does Google auto-tagging replace UTMs?

No — they're complementary. Google Ads auto-tagging appends a gclid parameter that maps clicks back to the underlying campaign/ad inside the Google Ads UI, but gclid is invisible to non-Google analytics tools. UTMs are the universal layer: they let Admaxxer (and any other analytics tool) attribute the click without needing Google Ads API access. The recommended setup is auto-tagging ON (so Google Ads' own reporting works) and a Final URL suffix with utm_source=google&utm_medium=cpc&utm_campaign={campaignid} (so cross-platform tools see the click). They don't conflict — they're different layers of the same attribution stack.

How do I avoid (direct) in /marketing-acquisition?

(direct) appears in the channel breakdown when a click lands without a referrer AND without UTMs — typically a hand-typed URL, a click from a native app that strips referrers, or an ad-platform link without proper tagging. The fix is two-fold. First, tag every paid link with the templates above — every Meta, Google, TikTok, Klaviyo, Pinterest, Snapchat, Reddit, and Amazon link should carry utm_source + utm_medium + utm_campaign at minimum. Second, enable Klaviyo's automatic UTM tagging at the account level so transactional + flow emails are covered. After 7 days of fully tagged campaigns, the (direct) bucket on /marketing-acquisition typically drops below 5% of total sessions — anything above that is a tagging gap worth chasing.

Related

• UTM best practices — The full taxonomy guide.
• Marketing Acquisition Summary — Where tagged campaigns show up.
• Meta Ads integration — Connect your ad account so the Builder pulls live campaign names.
• Google Ads integration — Connect for live campaign IDs and Final URL suffix sync.
• Pricing — URL Builder is free on every plan, including the 14-day trial.

Start tagging campaigns Read the playbook