ServiceWorkerToControlSrcdocIframeEnabled

Allow ServiceWorker to control srcdoc iframes

Last updated February 23, 2025

https://github.com/w3c/ServiceWorker/issues/765 asks srcdoc iframe with the "allow-same-origin" sandbox attribute to be under ServiceWorker control. Setting the policy to Enabled or leaving it unset means Google Chrome makes srcdoc iframes with "allow-same-origin" sandbox attributes to be under ServiceWorker control. Setting the policy to Disabled leaves the srcdoc iframe not controlled by ServiceWorker. This policy is intended to be temporary and will be removed in 2026.

Supported On:

Platform	Start	End
Android	134
Fuchsia	134
Chrome (Windows, Mac, Linux)	134
ChromeOS	134

Example value:

true

Features:

Per Profile: true
Dynamic Refresh: false