Permissions-Policy: window-management directive

Limited availability

The HTTP Permissions-Policy header window-management directive controls whether or not the current document is allowed to use the Window Management API to manage windows on multiple displays.

Where this policy forbids use of the API:

• The Promise returned by the getScreenDetails() method will reject with a NotAllowedError exception.
• The Window.screen.isExtended property will always return false.

Syntax

Permissions-Policy: window-management=<allowlist>;

• <allowlist>
  • : A list of origins for which permission is granted to use the feature. See Permissions-Policy > Syntax for more details.

Default policy

The default allowlist for window-management is self.

Specifications

Browser compatibility

See also

• Window Management API
• Permissions-Policy header
• Permissions Policy