Nuxt - Fonts are not preloaded in <head> despite configuring in nuxt.config.js

user_1980570 0
Viewed 978

I created and deployed a Nuxt project, and Google Pagespeed points out (rightfully) that my fonts are not preloaded when displaying the page, which hurts my PageSpeed score a lot.

I already checked this question: nuxt.js - preload .woff fonts loaded as @font-face and also this issue: https://github.com/nuxt/nuxt.js/issues/1508, but I could not fix the problem. Here is what I tried...

Currently my fonts are loaded in assets/scss/_text.scss:

@font-face {
  font-family: Raleway-Medium;
  src: url("~assets/fonts/Raleway/Raleway-Medium.woff2");
}
// ...

Then in assets/scss/main.scss:

@import '~assets/scss/_text.scss';
// ...

And finally in nuxt.config.js:

export default {
  // ...
  css: ['@/assets/scss/main.scss'],
  // ...
  render: {
    bundleRenderer: {
      shouldPreload: (_file, type) => {
        console.log(_file, type)
        return ['script', 'style', 'font'].includes(type)
      }
    }
  },
}

Unfortunately, my fonts are not preloaded at all. Actually, the console.log I added in the bundleRenderer function does not even find any font or style file, here is what is logged:

runtime.js script                                                                 
commons.app.js script                                                             
vendors.app.js script                                                             
app.js script

Does anyone know how I can fix this? Thanks a lot!

nuxt.js
2 Answers

Actually, I'm using a workaround, but I'm pretty sure it's not a perfect solution.

I wrote a node script (post-build.js) that I run after the "generate" command.

I use cheerio to modifiy html file content

const fs = require('fs')
const cheerio = require('cheerio')
const links = []

fs.readdirSync('./dist/_nuxt/fonts/').forEach((file) => {
  const fileExtension = file.split('.')[1]
  if (fileExtension === 'woff2') {
    links.push(
      `<link rel="preload" href="/_nuxt/fonts/${file}" as="font" type="font/woff2" crossorigin>`
    )
  }
})

const html = fs.readFileSync('./dist/index.html', 'utf8')
const $ = cheerio.load(html)
$('head').append(links.join(' '))

fs.writeFileSync(`./dist/index.html`, $.html(), 'utf8', () => {})

So then i add following lin in my scripts of my package.json file

"scripts:{
   "generate": "nuxt generate && node ./npm-scripts/post-build.js"
}
user_28385860

If anybody is having the same problem: font preloading is only active in universal mode, and does not activate in dev mode.

Changing to universal mode and running npm run generate creates pages in dist/ with the fonts preloaded.

user_19805700
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