Allow JavaScript to use JIT on these sites

Allows you to set a list of site url patterns that specify sites which are allowed to run JavaScript with JIT (Just In Time) compiler enabled.

For detailed information on valid site url patterns, please see * is not an accepted value for this policy.

JavaScript JIT policy exceptions will only be enforced at a site granularity (eTLD+1). A policy set for only will not correctly apply to or since they both resolve to the same eTLD+1 ( for which there is no policy. In this case, policy must be set on to apply correctly for both and

This policy applies on a frame-by-frame basis and not based on top level origin url alone, so e.g. if is listed in the JavaScriptJitAllowedForSites policy but loads a frame containing then will have JavaScript JIT enabled, but will use the policy from DefaultJavaScriptJitSetting, if set, or default to JavaScript JIT enabled.

If this policy is not set for a site then the policy from DefaultJavaScriptJitSetting applies to the site, if set, otherwise Javascript JIT is enabled for the site.

Example value:


Supported on: At least Microsoft Windows 7 or Windows Server 2008 family

Allow JavaScript to use JIT on these sites

Registry PathSoftware\Policies\Google\ChromeOS\JavaScriptJitAllowedForSites
Value Name{number}
Value TypeREG_SZ
Default Value


Administrative Templates (Computers)

Administrative Templates (Users)