Because of a technical limitation, navigator.serviceWorker was previously exposed on insecure contexts and threw a Security Error when used. After this change, navigator.serviceWorker will return undefined. This aligns with the specification.



Specification link

Specification being incubated in a Community Group

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.

  • No signal
  • No signal
  • No signals


Search tags

serviceworker, service, worker, insecure, secure,

Last updated on 2020-11-09