nextjs add font face in head [nextjs]

nextjs add font face in head

nextjs

You can add a custom font face in the head of your Next.js application by using the head property in the page component. Here’s an example:

import Head from 'next/head'

function MyPage() {
  return (
    <Head>
      <link href="https://fonts.googleapis.com/css2?family=Open+Sans&display=swap" rel="stylesheet" />
      <style>
        {`
          body {
            font-family: 'Open Sans', sans-serif;
          }
        `}
      </style>
    </Head>
  )
}

export default MyPage

In this example, we’re using the tag to include the Open Sans font from Google Fonts. Then, we’re using the

nextjs load font before web load

You can ensure that the custom font is loaded before your page is displayed by using the font-display property in the @font-face rule. The font-display property determines how the font should be displayed while it’s being loaded.

Here’s an example of how you can use font-display to ensure that your custom font is loaded before the page is displayed:

import Head from 'next/head'

function MyPage() {
  return (
    <Head>
      <style>
        {`
          @font-face {
            font-family: 'My Custom Font';
            src: url('path/to/font.woff2') format('woff2'),
                 url('path/to/font.woff') format('woff');
            font-display: block;
          }

          body {
            font-family: 'My Custom Font', sans-serif;
          }
        `}
      </style>
    </Head>
  )
}

export default MyPage

In this example, the font-display property is set to block, which means that the custom font will be displayed with a fallback font until the custom font has loaded. The fallback font will be used for a short period of time, and then the custom font will replace it. This ensures that the custom font is loaded before the page is displayed to the user.

font-display properties

The font-display property in the @font-face rule is used to determine how the custom font should be displayed while it’s being loaded. It has several possible values, each with a different behavior:

auto (default): The browser will decide how to display the font based on its own heuristics.

block: The custom font will be displayed with a fallback font until the custom font has loaded. The fallback font will be used for a short period of time, and then the custom font will replace it. This ensures that the custom font is loaded before the page is displayed to the user.

swap: The custom font will be displayed with a fallback font until the custom font has loaded, and then it will be swapped in. This is similar to block, but the fallback font may be displayed for a longer period of time.

fallback: The custom font will be displayed with a fallback font until the custom font has loaded, and then it will be displayed. This means that the fallback font will be used as a temporary placeholder until the custom font is available.

optional: The custom font will be displayed if it has already been loaded, or it will be displayed using a fallback font if it hasn’t. This means that the custom font may not be displayed if it hasn’t been used on the page before.

The value you choose will depend on your specific use case and the importance of the custom font for your page. In most cases, block or swap will be a good choice to ensure that the custom font is loaded before the page is displayed to the user.

nextjs load font before main.js

To ensure that the custom font is loaded before the main JavaScript file in your Next.js application, you can use the preload link relation in the head component. The preload link relation tells the browser to start loading the resource (in this case, the font file) as soon as possible, before the main JavaScript file has executed.

Here’s an example of how you can use the preload link relation to load the custom font before the main JavaScript file:

import Head from 'next/head'

function MyPage() {
  return (
    <Head>
      <link rel="preload" as="font" type="font/woff2" href="path/to/font.woff2" crossOrigin="anonymous" />
      <style>
        {`
          @font-face {
            font-family: 'My Custom Font';
            src: url('path/to/font.woff2') format('woff2'),
                 url('path/to/font.woff') format('woff');
            font-display: block;
          }

          body {
            font-family: 'My Custom Font', sans-serif;
          }
        `}
      </style>
    </Head>
  )
}

export default MyPage

In this example, the rel attribute is set to preload and the as attribute is set to font to indicate that the resource being loaded is a font file. The href attribute specifies the URL of the font file, and the type attribute specifies the type of the font file.

By using the preload link relation, you can ensure that the custom font is loaded as soon as possible, before the main JavaScript file is executed. This can improve the performance of your page and ensure that the custom font is available for use as soon as the page is displayed to the user.

nextjs how to minimize size file font .woff

To minimize the size of a .woff font file, you can use a tool to optimize the font data. There are several online tools available that can compress .woff files and reduce their size, such as:

FontSquirrel’s Webfont Generator: https://www.fontsquirrel.com/tools/webfont-generator Transfonter: https://transfonter.org/ These tools work by removing any redundant data from the font file and compressing the remaining data. The exact process will depend on the specific tool you use, but most tools will allow you to upload your font file and then generate an optimized .woff file that you can use on your website.

It’s important to note that reducing the size of the font file will also reduce the quality of the font. You may need to experiment with different compression settings to find a balance between file size and font quality that works for your use case.

In addition to using a font optimization tool, you can also reduce the size of the font file by using a font format that is more compact, such as .woff2. .woff2 is a more efficient format than .woff, and is supported by most modern browsers. By using .woff2, you can reduce the size of the font file and improve the performance of your website.

How to load fonts first And block other js file to load at the back when the font is finished loading

To ensure that the custom font is loaded before other JavaScript files in your Next.js application, you can use the preload link relation in the head component. The preload link relation tells the browser to start loading the resource (in this case, the font file) as soon as possible, before any other resources are loaded.

Here’s an example of how you can use the preload link relation to load the custom font first:

import Head from 'next/head'

function MyPage() {
  return (
    <Head>
      <link rel="preload" as="font" type="font/woff2" href="path/to/font.woff2" crossOrigin="anonymous" />
      <style>
        {`
          @font-face {
            font-family: 'My Custom Font';
            src: url('path/to/font.woff2') format('woff2'),
                 url('path/to/font.woff') format('woff');
            font-display: block;
          }

          body {
            font-family: 'My Custom Font', sans-serif;
          }
        `}
      </style>
    </Head>
  )
}

export default MyPage

By using the preload link relation, you can ensure that the custom font is loaded as soon as possible, before any other resources are loaded. This can improve the performance of your page and ensure that the custom font is available for use as soon as the page is displayed to the user.

In addition, you can also set the font-display property in the @font-face rule to block, which tells the browser to display the fallback font until the custom font has loaded, and then to replace it with the custom font. This ensures that the custom font is loaded before other resources are loaded, and that the fallback font is not displayed for an extended period of time.