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.
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 |
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| Compute Pressure Level 1 # policy-control |
Browser compatibility
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.