UTM Campaign Builder + Validator

Build canonical UTM-tagged URLs (source, medium, campaign, term, content). Bulk-validate pasted URLs — flags case mismatches, missing fields, source/medium combinations that break GA4 channel grouping.

Read the deep-dive blog →

Context and background

Read the story behind this tool: UTM Hygiene — Why Mixed-Case Source Tags Wreck Your GA4 Channel Grouping →

Build a tagged URL

Destination URL

utm_campaign *

utm_source *

utm_medium *

utm_content

utm_term (paid only)

Bulk-validate URLs

Paste up to 200 URLs. Validates UTM-tag presence + format, flags case-mismatches and source/medium combos that break GA4 channel grouping.