Cross-origin isolation
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Cross-origin isolation enables a web page to use powerful features such as
SharedArrayBuffer
. An extension can opt into cross-origin isolation by
specifying the appropriate values for the cross_origin_embedder_policy
and
cross_origin_opener_policy
manifest keys. For example, a manifest like the one below
will opt the extension's origin into cross-origin isolation.
{
"name": "CrossOriginIsolation example",
"manifest_version": 2,
"version": "1.1",
"cross_origin_embedder_policy": {
"value": "require-corp"
},
"cross_origin_opener_policy": {
"value": "same-origin"
},
...
}
Opting into cross-origin isolation allows the extension to use powerful APIs like SharedArrayBuffers
in its cross-origin isolated contexts. However, it does also come with certain side-effects. See
Making your website "cross-origin isolated" using COOP and COEP for
more information on this.
Caution: Even if an extension opts into cross-origin isolation, not all extension contexts will be
cross-origin isolated. For example, cross-origin isolation is not fully implemented )
for service and shared workers currently. Similarly, a cross-origin isolated extension's
web-accessible subframe on a regular web page is not considered cross-origin isolated currently.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License , and code samples are licensed under the Apache 2.0 License . For details, see the Google Developers Site Policies . Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2021-08-03 UTC.
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