Worker global scope's URL (self.location, referrer, and base URL) should reflect redirects (i.e. should be the response URL, not the request URL), according to the spec. The worker global scope's URL has been the response URL in Firefox and the request URL in Chromium/Safari/Edge. Chromium is changing it to the response URL to match with the spec. Spec issue:



Specification link

Final published standard: Recommendation, Living Standard, Candidate Recommendation, or similar final form

Status in Chromium


Enabled by default (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • Shipped/Shipping
  • No signal
  • No signals


Last updated on 2021-12-13