Cherry Seed

Which browsers strip tracking parameters?

UTM stripping query parameter loss redirect tracking

Quick Answer

Safari strips recognized tracking parameters (fbclid, gclid) after 7 days and limits cookies from classified tracking domains to 24 hours. Firefox with Enhanced Tracking Protection and Brave browser aggressively remove tracking parameters. Chrome is least restrictive—for now.

Full Answer

Browser tracking parameter behavior: Safari (ITP):

  • Strips fbclid, gclid, and other click IDs after 7 days
  • Link decoration from classified tracking domains: 24-hour cookie limit
  • Third-party cookies blocked entirely
  • Advanced Tracking Protection (Safari 17+): Can block scripts entirely Firefox (ETP):
  • Enhanced Tracking Protection removes known tracking parameters
  • Third-party cookies blocked in strict mode
  • Referrer limited to origin only Brave:
  • Aggressive parameter stripping by default
  • Known tracking parameters removed automatically
  • Fingerprinting protection affects tracking scripts Chrome:
  • Currently most permissive -...

Sources

Programmatic Access

GET https://seresa.io/wp-json/cherry-tree-by-seresa/v1/seeds/784

Cite This Answer

Cherry Tree by Seresa - https://seresa.io/seed/utm-attribution/utm-disappearing-s4