Support in current browsers

Checked against the current browser versions recorded in MDN browser data 8.0.7.

BrowserMinimumOutcomeReason
Chrome150WorksEvery required mapped BCD feature is available without a recorded qualification.
Edge150WorksEvery required mapped BCD feature is available without a recorded qualification.
Firefox152WorksEvery required mapped BCD feature is available without a recorded qualification.
Safari26.5WorksEvery required mapped BCD feature is available without a recorded qualification.
Chrome for Android150WorksEvery required mapped BCD feature is available without a recorded qualification.
Firefox for Android152WorksEvery required mapped BCD feature is available without a recorded qualification.
Safari on iOS26.5WorksEvery required mapped BCD feature is available without a recorded qualification.
Android WebView150WorksEvery required mapped BCD feature is available without a recorded qualification.
Samsung Internet29.0WorksEvery required mapped BCD feature is available without a recorded qualification.

What this feature can and cannot do

Helps protect against

  • URL data disclosure
  • Cross-origin navigation metadata leakage

Does not guarantee

  • Data placed in destination URLs
  • Other browser telemetry
  • Server logs for the requested resource

What you need before using it

  • A policy compatible with application routing and integrations

Fallback to keep in place

Keep sensitive values out of URLs and avoid relying on referrer data for authorisation.