Service workers no longer receive fetch events for requests from embed and object elements. This includes both requests for the main resource itself (the src or data attribute) and for any requests from the resulting context (the plugin or HTML context). This change was made to adhere to the specification, which disallows service worker interception due to security considerations.


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 signal
  • No signals


Search tags

serviceworker, service, worker, fetch, event, fetchevent, plugin, embed, object, plug-in,

Last updated on 2020-11-09