Headers: Permissions-Policy.window-management

Permissions-Policy: window-management directive

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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 Window.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

Specification
Window Management> # api-permission-policy-integration>

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`window-management`	100	100	No	86	No	100	No	69	No	19.0	No	No