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http header

Supports-Loading-Mode header

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Secure contextLimited availability

The HTTP Supports-Loading-Mode response header allows a response to opt-in to being loaded in a novel, higher-risk context that it would otherwise fail to be loaded in.

Header type [Response header](https://developer.mozilla.org/en-US/docs/Glossary/Response%20header)
[CORS-safelisted response header](https://developer.mozilla.org/en-US/docs/Glossary/CORS-safelisted%20response%20header) No

Syntax

Supports-Loading-Mode: <client-hint-headers>

Directives

The Supports-Loading-Mode header value is a list of one or more tokens, which can include the following values:

  • credentialed-prerender Experimental
    • : Indicates that a destination origin opts in to loading documents via cross-origin, same-site prerendering.
  • fenced-frame Experimental
    • : The response can loaded inside a fenced frame. Without this explicit opt-in, all navigations inside of a fenced frame will fail.

Examples

Supports-Loading-Mode: fenced-frame

Specifications

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibility

Browser compatibilityCompatibility data is available on the canonical MDN page.

See also