Headers: Permissions-Policy.compute-pressure

Permissions-Policy: compute-pressure directive

Limited availability

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

Learn more
See full compatibility

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

The HTTP Permissions-Policy header compute-pressure directive controls access to the Compute Pressure API.

Syntax

Permissions-Policy: compute-pressure=<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 compute-pressure is self allowing usage in same-origin nested frames but preventing third-party content from using the feature. Workers (dedicated and shared) adhere to the permission policy set by their owning document(s).

Examples

Enabling compute pressure on third-party content

Third-party usage can be selectively enabled using the allow attribute on <iframe> elements:

<iframe src="https://example.com" allow="compute-pressure"></iframe>

Disabling the Compute Pressure API completely

This HTTP response header disables compute pressure completely:

Permissions-Policy: compute-pressure=()

Specifications

Specification
Compute Pressure Level 1> # policy-control>

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
`compute-pressure`	125	125	No	111	No	No	No	No	No	No	No	No