dns-prefetch-control

Middleware to set X-DNS-Prefetch-Control header.

Usage no npm install needed!

<script type="module">
  import dnsPrefetchControl from 'https://cdn.skypack.dev/dns-prefetch-control';
</script>

README

DNS prefetch control header for Express

Build Status

This middleware lets you set the X-DNS-Prefetch-Control to control browsers' DNS prefetching. Read more about it on MDN and on Chromium's docs.

Usage:

const dnsPrefetchControl = require('dns-prefetch-control')

// Set X-DNS-Prefetch-Control: off
app.use(dnsPrefetchControl())

// Set X-DNS-Prefetch-Control: off
app.use(dnsPrefetchControl({ allow: false }))

// Set X-DNS-Prefetch-Control: on
app.use(dnsPrefetchControl({ allow: true }))