Add a note for preload asset

alamirault · alamirault · commit 08b83a2c283d · 2019-08-15T13:43:23.000+02:00
diff --git a/web_link.rst b/web_link.rst
@@ -66,6 +66,17 @@ If you reload the page, the perceived performance will improve because the
 server responded with both the HTML page and the CSS file when the browser only
 requested the HTML page.
 
+.. note::
+
+    You can preload an asset by wrapping it with the ``preload()`` function
+
+    .. code-block:: twig
+
+        <head>
+           {# ... #}
+            <link rel="stylesheet" href="{{ preload(asset('build/app.css')) }}">
+        </head>
+
 Additionally, according to `the Priority Hints specification`_, you can signal
 the priority of the resource to download using the ``importance`` attribute:
 
