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UTM link checker

Catch broken attribution before a campaign ships. The check runs in your browser; the URL you paste is never sent to our server.

Runs locally. The pasted URL is not uploaded.
—/100

Run the check to see the quality score and exact fixes.

What it checks

Seven quiet ways campaign links break.

  • Required tagsChecks source, medium, and campaign.
  • Mixed caseFlags values that split otherwise identical analytics rows.
  • SpacesFinds inconsistent, hard-to-read values.
  • DuplicatesDetects repeated query parameters with ambiguous values.
  • HTTPSWarns about insecure destinations.
  • Personal dataFlags email-like values that should not appear in tracking URLs.
  • Unknown tagsIdentifies misspelled UTM parameter names.