Guides

Custom Font

Adding custom fonts to your application or website is a typical requirement for projects. Panda recommends using custom fonts through CSS variables for consistency.

Setup

Next.js

Next.js provides a built-in automatic self-hosting for any font file by using the next/font module. It allows you to conveniently use all Google Fonts and any local font with performance and privacy in mind.

Here's an example of how to load a local "Mona Sans" font and a Google Font "Fira Code" in your Next.js project.

styles/font.ts
import { Fira_Code } from 'next/font/google'
import localFont from 'next/font/local'
 
export const MonaSans = localFont({
  src: '../fonts/Mona-Sans.woff2',
  display: 'swap',
  variable: '--font-mona-sans'
})
 
export const FiraCode = Fira_Code({
  weight: ['400', '500', '700'],
  display: 'swap',
  subsets: ['latin'],
  variable: '--font-fira-code'
})

Next, you need to add the font variables to your HTML document. You can do this using either the App Router or the Pages Router.

App Router

app/layout.tsx
import { Fira_Code, MonaSans } from '../styles/font'
 
export default function Layout(props) {
  const { children } = props
  return (
    <html className={`${MonaSans.variable} ${FiraCode.variable}`}>
      <body>{children}</body>
    </html>
  )
}

Pages Router

pages/_app.tsx
import { Fira_Code, MonaSans } from '../styles/font'
 
export default function App({ Component, pageProps }) {
  return (
    <>
      <style jsx global>
        {`
          :root {
            --font-mona-sans: ${MonaSans.style.fontFamily};
            --font-fira-code: ${FiraCode.style.fontFamily};
          }
        `}
      </style>
      <Component {...pageProps} />
    </>
  )
}

Font Source

Fontsource provides a straightforward process for installing fonts into your web application.

First you need to install the desired font package.

pnpm add @fontsource/fira-code

Then import the font in your project.

import '@fontsource/fira-code'

Finally, you can import the css styles for the specific weight and subset you want to use.

styles/font.css
import '@fontsource/open-sans/500.css';
 
:root {
  --font-fira-code: 'Fira Code', monospace;
}

Vanilla CSS

You can leverage the native font-face CSS property to load custom fonts in your project.

@font-face {
  font-family: 'Mona Sans';
  src: url('../fonts/Mona-Sans.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

Then alias the font names to css variables.

:root {
  --font-mona-sans: 'Mona Sans', sans-serif;
}

Update Panda Config

export default defineConfig({
  theme: {
    extend: {
      tokens: {
        fonts: {
          fira: { value: 'var(--font-fira-code), Menlo, monospace' },
          mona: { value: 'var(--font-mona-sans), sans-serif' }
        }
      }
    }
  }
})

Use the custom fonts

import { css } from '../styled-system/css'
 
function Page() {
  return (
    <div>
      <h1 className={css({ fontFamily: 'fira' })}>Mona Sans</h1>
      <code className={css({ fontFamily: 'mona' })}>Fira Code</code>
    </div>
  )
}
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