HTML specifies that `data:` URLs can be used to create workers with opaque origins. We should support this as a first step towards defining a sandboxing mechanism for Workers (and parity with other browsers).


Established standard

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 58
  • Chrome for Android release 58

Consensus & Standardization

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

  • Shipped/Shipping
  • Positive
  • No signal
  • No signals


Last updated on 2020-11-09