How to Load A Font From Node_modules With Vite?

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To load a font from node_modules with Vite, you can use the @import rule in your CSS file to import the font file from the node_modules directory. First, locate the font file in your node_modules directory and determine the path to the font file. Then, in your CSS file, use the @import rule followed by the path to the font file in node_modules. This will allow Vite to load the font file and apply the font styles to your project. Make sure to include the appropriate font styles such as font-family and font-weight to apply the font to specific elements in your project.

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How to lazy load fonts in Vite?

To lazy load fonts in Vite, you can use the dynamicImport function provided by Vite. Here's an example of how you can lazy load fonts in your Vite project:

  1. Create a new folder in your project directory called fonts and place your font files (e.g. .woff, .woff2, etc.) inside this folder.
  2. Update your vite.config.js file to use the dynamicImport function to lazy load the fonts. Here's an example configuration:
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import { defineConfig } from 'vite';

export default defineConfig({
  build: {
    manifest: true,
    rollupOptions: {
      plugins: [
        {
          name: 'lazy-load-fonts',
          resolveId(source) {
            if (source === 'lazy-load-fonts') {
              return source;
            }
            return null;
          },
          load(id) {
            if (id === 'lazy-load-fonts') {
              return `
                export function loadFonts() {
                  const link = document.createElement('link');
                  link.rel = 'stylesheet';
                  link.href = '/fonts/fonts.css';
                  document.head.appendChild(link);
                }
              `;
            }
            return null;
          }
        }
      ]
    }
  }
});


  1. Create a new CSS file inside the fonts folder named fonts.css and import your font files using @font-face. For example:
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@font-face {
  font-family: 'Roboto';
  src: url('./Roboto-Regular.woff2') format('woff2');
  font-weight: normal;
  font-style: normal;
}


  1. Now, you can lazy load the fonts in your application by calling the loadFonts function provided by the lazy-load-fonts plugin. For example:
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import { loadFonts } from 'lazy-load-fonts';

loadFonts();


By following these steps, you can lazy load fonts in your Vite project to improve performance and optimize loading times.


What is the role of browser cache in font loading in Vite?

In Vite, the browser cache plays a crucial role in font loading by storing previously loaded font files locally on the user's device. When a user visits a website that uses Vite to load fonts, the browser will check its cache to see if it already has the necessary font files. If the files are found in the cache, the browser can quickly retrieve and display the fonts without having to download them again from the server.


This helps to speed up the font loading process and improve performance, as the browser doesn't need to make repeated requests for the same font files. Additionally, caching the font files locally can reduce the overall bandwidth usage and improve the user experience by ensuring that the fonts load quickly and consistently across different pages and visits to the website.


How to optimize font loading in Vite?

To optimize font loading in Vite, you can follow these steps:

  1. Preload fonts: You can preload fonts in your HTML file using the link tag with the "preload" attribute. This will tell the browser to start downloading the fonts as soon as possible, without waiting for the CSS file to be parsed.
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<link rel="preload" href="path/to/font.woff2" as="font" type="font/woff2" crossorigin>


  1. Use font-display: You can use the font-display property in your CSS to control how the font is displayed while it is loading. This property allows you to specify whether the text should be displayed using the fallback font until the custom font is loaded. For example, you can use font-display: swap; to display the fallback font until the custom font is available.
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@font-face {
  font-family: 'Custom Font';
  src: url('path/to/font.woff2') format('woff2');
  font-display: swap;
}


  1. Optimize font formats: Use modern font formats like WOFF2, which offer better compression and faster loading times compared to older formats like TTF or OTF.
  2. Use a font loading library: Consider using a font loading library like Font Face Observer or Web Font Loader, which can help you manage the loading of custom fonts and provide more control over how and when they are loaded.
  3. Minimize font files: Only include the font weights, styles, and characters that are necessary for your website to reduce the size of the font files and improve loading times.


By following these steps, you can optimize font loading in Vite and ensure that your custom fonts are displayed quickly and efficiently on your website.

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