The WebLink component manages links between resources. It is particularly useful to advise clients to preload and prefetch documents through HTTP and HTTP/2 pushes.

This component implements the HTML5's Links, Preload and Resource Hints W3C's specifications. It can also be used with extensions defined in the HTML5 link type extensions wiki.

composer require symfony/web-link

use Symfony\Component\WebLink\GenericLinkProvider;
use Symfony\Component\WebLink\HttpHeaderSerializer;
use Symfony\Component\WebLink\Link;

$linkProvider = (new GenericLinkProvider())
    ->withLink(new Link('preload', '/bootstrap.min.css'));

header('Link: '.(new HttpHeaderSerializer())->serialize($linkProvider->getLinks()));

echo 'Hello';

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