Permissions-Policy: browsing-topics
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
The HTTP Permissions-Policy
header browsing-topics
directive controls access to the Topics API.
Where a policy specifically disallows the use of the Topics API, any attempts to call the Document.browsingTopics()
method or send a request with a Sec-Browsing-Topics
header will fail with a NotAllowedError
DOMException
.
Syntax
Permissions-Policy: browsing-topics=<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 browsing-topics
is *
.
Specifications
This feature is not part of an official standard, although it is specified in the Topics API Unofficial Proposal Draft.
Browser compatibility
BCD tables only load in the browser with JavaScript enabled. Enable JavaScript to view data.