Step 3: Optimize | App Router

Navigate to the app/layout.tsx file.
Add the following <link> tags in the Start of <head> tag section.

<!-- Speed up connections to forms.withsurface.com by performing early DNS resolution and TCP handshake -->
<link rel="dns-prefetch" href="https://forms.withsurface.com">
<link rel="preconnect" href="https://forms.withsurface.com" crossorigin="">

<!--  Fetch the form in advance, so it's ready when a user opens it. -->
<link rel="prefetch" href="REPLACE ME WITH FORM URL" as="document">

Replace REPLACE ME WITH FORM URL with a Surface Form URL.