Link

The HTTP Link entity-header field provides a means for serialising one or more links in HTTP headers. It is semantically equivalent to the HTML <link> element.

Syntax

Link: <uri-reference>; param1=value1; param2="value2"
<uri-reference>

The URI reference, must be enclosed between < and >.

Parameters

The link header contains parameters, which are separated with ; and are equivalent to attributes of the <link> element.

Examples

The URI (absolute or relative) must be enclosed between < and >:

Link: <https://example.com>; rel="preconnect"
Link: https://bad.example; rel="preconnect"

You can specify multiple links separated by commas, for example:

Link: <https://one.example.com>; rel="preconnect", <https://two.example.com>; rel="preconnect", <https://three.example.com>; rel="preconnect"

Specifications

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Browser compatibility

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See also