Community Plugin

gatsby-plugin-preconnect

Quickly add a <link rel="preconnect" crossorigin> tag for every specified domain.

npm

Install

npm install --save gatsby-plugin-preconnect

What this plugin does

It simply adds a <link rel="preconnect" href="https://example.com" crossorigin> to the page (see the Resource Prioritization - Preconnect guide).

How to use

// In your gatsby-config.js
plugins: [
  {
    resolve: 'gatsby-plugin-preconnect',
    options: {
      domains: ['https://foo.com', 'https://bar.com'],
    },
  },
]

crossOrigin is set to true by default but it can be customized, below all the available options

plugins: [
  {
    resolve: 'gatsby-plugin-preconnect',
    options: {
      domains: [
        'https://foo.com',
        'https://bar.com',
        { domain: 'https://enablecors.com', crossOrigin: true },
        { domain: 'https://disablecors.com', crossOrigin: false },
        { domain: 'https://corswithanonymous.com', crossOrigin: 'anonymous' },
        { domain: 'https://corswithcreds.com', crossOrigin: 'use-credentials' },
      ],
    },
  },
]

All the available values for crossOrigin are listed below, every other value makes the plugin throw an error

Value	Equivalent value
`undefined`	“anonymous”
`true`	“anonymous”
`"anonymous"`	“anonymous”
`"use-credentials"`	“use-credentials”
`false`	(attribute not added)

Contributing

PR or issues are welcome 👋

Notes

if you want to work on the plugin sources, remember that you need to npm run build on the root then, in every test project, you need to run npm run plugin:link to locally use it