Tag your URLs
Use the UTM Enforcer to build campaign links with consistent source, medium, and campaign values your whole team agrees on.
GA4 classifies traffic
Google Analytics reads your UTM values and maps each session to a default channel — Paid Search, Email, Organic Social, and more.
Attribution assigns credit
Your chosen model — last-click, first-click, or data-driven — decides which touchpoints get credit for each conversion.
GA4 Attribution & UTM Reference
A complete guide to how GA4 assigns credit — models, lookback windows, the five UTM parameters, channel grouping rules, and naming conventions your whole team can follow.
UTM Taxonomy Enforcer
Build compliant tagged URLs from controlled source/medium lists, audit existing URLs for errors, bulk-edit via CSV, and keep a local history of everything you've created.
Consistent channel grouping
GA4 uses your UTM values to classify traffic. Wrong mediums push paid clicks into Organic or Direct — skewing every report.
Model-aware credit allocation
First-click, last-click, and data-driven attribution tell different stories. Know which to use and what each one hides.
Enforced naming at scale
Controlled source and medium lists plus slug-formatted campaign names keep data clean even when many people are tagging URLs.
No-code, no-server
Both tools run entirely in the browser. No sign-up, no install, no data sent anywhere. Works offline after the first load.
Built-in auditing
Paste any URL into the Auditor and get instant validation: missing params, wrong case, forbidden mediums, non-slug values.
Shareable URLs
Pre-fill the builder from a link so you can share a partially-completed URL template with a teammate or embed in a brief.
Supported by people who care about clean data
These sponsors make it possible to keep this project free, open, and maintained. Thank you.
Brand Meets Code
Full-stack analytics infrastructure for modern marketing teams. GA4 migrations, BigQuery pipelines, and attribution strategy.
★ GoldDataLayer Tracker
GTM and GA4 implementation specialists. Clean data collection, custom dimensions, and server-side tagging.
★ GoldIntently
Performance marketing agency helping B2B SaaS teams connect campaign spend to pipeline through rigorous attribution.
★ GoldArtExhib
Spatial exhibition platform — curated 3D gallery halls in the browser for artists and curators.
Blueprint Toolkit
Plan, document, and implement GA4 and GTM projects with frameworks, guides, and client-ready deliverables.
fidget.studio
Interactive 3D shape animation playground — design, preview, and export animated SVG graphics.
10 Speed Studios
Browser games with sharp mechanics and real progression — built for promotions, loyalty, and live events.
Sponsor this project
Reach developers, marketers, and analysts who take attribution seriously. Community, Silver, and Gold tiers available.