next/font

The next/font module provides automatic font optimization with zero layout shift, reduced network requests, and built-in subsetting.

Google Fonts

Import fonts from Google Fonts CDN (dev) or self-host them (production).

Import

import { Inter, Roboto_Mono } from 'next/font/google'

Basic Usage

import { Inter } from 'next/font/google'

const inter = Inter({ subsets: ['latin'] })

export default function Layout({ children }) {
  return (
    <html className={inter.className}>
      <body>{children}</body>
    </html>
  )
}

API Reference

string[]

required

Font subsets to load (reduces file size).Common subsets:

'latin' — Latin alphabet (English, French, German, etc.)
'latin-ext' — Extended Latin (Eastern European)
'cyrillic' — Cyrillic alphabet (Russian, Ukrainian, etc.)
'greek' — Greek alphabet
'vietnamese' — Vietnamese

const inter = Inter({ 
  subsets: ['latin', 'latin-ext'] 
})

string | string[]

Font weights to load.

// Single weight
const inter = Inter({ subsets: ['latin'], weight: '400' })

// Multiple weights
const inter = Inter({ subsets: ['latin'], weight: ['400', '700'] })

// Variable font (all weights)
const inter = Inter({ subsets: ['latin'] })  // Loads 100-900

string | string[]

default:"'normal'"

Font styles to load.

const inter = Inter({ subsets: ['latin'], style: ['normal', 'italic'] })

string

default:"'swap'"

CSS font-display value.

'swap' — Show fallback immediately, swap when loaded (recommended)
'optional' — Use font if cached, otherwise use fallback
'fallback' — Brief block period, then swap
'block' — Block rendering until font loads (avoid)

const inter = Inter({ subsets: ['latin'], display: 'optional' })

boolean

default:"true"

Add <link rel="preload"> for faster loading.

const inter = Inter({ subsets: ['latin'], preload: true })

string[]

default:"['sans-serif']"

Fallback fonts when the web font is loading or unavailable.

const inter = Inter({ 
  subsets: ['latin'],
  fallback: ['system-ui', 'arial', 'sans-serif']
})

boolean

default:"true"

Automatically adjust fallback fonts to reduce layout shift.

const inter = Inter({ subsets: ['latin'], adjustFontFallback: false })

string

CSS variable name for the font.

const inter = Inter({ 
  subsets: ['latin'],
  variable: '--font-inter'
})

// Usage in CSS:
// font-family: var(--font-inter);

Return Value

string

CSS class name that applies the font.

const inter = Inter({ subsets: ['latin'] })

<div className={inter.className}>
  This text uses Inter
</div>

{ fontFamily: string }

Inline style object with fontFamily.

<div style={inter.style}>
  This text uses Inter
</div>

string

CSS class name that sets the CSS variable.

const inter = Inter({ subsets: ['latin'], variable: '--font-inter' })

<html className={inter.variable}>
  {/* Now var(--font-inter) is available everywhere */}
</html>

Examples

Multiple Fonts

import { Inter, Roboto_Mono } from 'next/font/google'

const inter = Inter({ subsets: ['latin'] })
const robotoMono = Roboto_Mono({ subsets: ['latin'] })

export default function Layout({ children }) {
  return (
    <html className={`${inter.variable} ${robotoMono.variable}`}>
      <body className={inter.className}>{children}</body>
    </html>
  )
}

With Tailwind CSS

// app/layout.tsx
import { Inter } from 'next/font/google'

const inter = Inter({ 
  subsets: ['latin'],
  variable: '--font-inter'
})

export default function RootLayout({ children }) {
  return (
    <html className={inter.variable}>
      <body>{children}</body>
    </html>
  )
}

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      fontFamily: {
        sans: ['var(--font-inter)', 'sans-serif'],
      },
    },
  },
}

Single Page

import { Playfair_Display } from 'next/font/google'

const playfair = Playfair_Display({ subsets: ['latin'] })

export default function ArticlePage() {
  return (
    <article className={playfair.className}>
      <h1>Beautiful Typography</h1>
      <p>Using Playfair Display</p>
    </article>
  )
}

Local Fonts

Use fonts from local files.

Import

import localFont from 'next/font/local'

Basic Usage

import localFont from 'next/font/local'

const myFont = localFont({
  src: './fonts/my-font.woff2'
})

export default function Layout({ children }) {
  return (
    <html className={myFont.className}>
      <body>{children}</body>
    </html>
  )
}

API Reference

string | LocalFontSrc | LocalFontSrc[]

required

Font file path(s).Single file:

const myFont = localFont({
  src: './fonts/my-font.woff2'
})

Multiple weights:

const myFont = localFont({
  src: [
    {
      path: './fonts/my-font-regular.woff2',
      weight: '400',
      style: 'normal',
    },
    {
      path: './fonts/my-font-bold.woff2',
      weight: '700',
      style: 'normal',
    },
  ]
})

string

Default font weight (when using single src string).

const myFont = localFont({
  src: './fonts/my-font.woff2',
  weight: '600'
})

string

default:"'normal'"

Default font style.

const myFont = localFont({
  src: './fonts/my-font-italic.woff2',
  style: 'italic'
})

string

default:"'swap'"

CSS font-display value (same as Google Fonts).

string[]

Fallback fonts.

const myFont = localFont({
  src: './fonts/my-font.woff2',
  fallback: ['system-ui', 'sans-serif']
})

string

CSS variable name.

const myFont = localFont({
  src: './fonts/my-font.woff2',
  variable: '--font-custom'
})

boolean

default:"true"

Add preload hint.

Array<{ prop: string; value: string }>

Custom CSS properties for the @font-face rule.

const myFont = localFont({
  src: './fonts/my-font.woff2',
  declarations: [
    { prop: 'font-feature-settings', value: '"liga" 1' },
    { prop: 'font-variation-settings', value: '"wght" 400' }
  ]
})

Examples

Variable Font

import localFont from 'next/font/local'

const myFont = localFont({
  src: './fonts/my-variable-font.woff2',
  variable: '--font-custom'
})

export default function Layout({ children }) {
  return (
    <html className={myFont.variable}>
      <body className={myFont.className}>{children}</body>
    </html>
  )
}

Multiple Weights and Styles

import localFont from 'next/font/local'

const myFont = localFont({
  src: [
    {
      path: './fonts/my-font-light.woff2',
      weight: '300',
      style: 'normal',
    },
    {
      path: './fonts/my-font-regular.woff2',
      weight: '400',
      style: 'normal',
    },
    {
      path: './fonts/my-font-regular-italic.woff2',
      weight: '400',
      style: 'italic',
    },
    {
      path: './fonts/my-font-bold.woff2',
      weight: '700',
      style: 'normal',
    },
  ]
})

export default function Layout({ children }) {
  return (
    <html className={myFont.className}>
      <body>{children}</body>
    </html>
  )
}

Self-Hosting Google Fonts

In production builds, vinext automatically downloads and self-hosts Google Fonts:

Build time: Plugin fetches font CSS and .woff2 files from Google
Assets: Fonts are bundled with your app
Runtime: No requests to Google Fonts CDN

Benefits:

Faster loading (no DNS lookup, no third-party request)
Better privacy (no data sent to Google)
Works offline

Dev mode: Fonts load from Google CDN (faster iteration).

Performance

Zero Layout Shift

vine automatically generates fallback font metrics to prevent layout shift:

/* Generated by vinext */
@font-face {
  font-family: '__Inter_Fallback';
  src: local('Arial');
  ascent-override: 90.2%;
  descent-override: 22.4%;
  line-gap-override: 0%;
  size-adjust: 107.4%;
}

Subsetting

Loading only the characters you need:

const inter = Inter({ 
  subsets: ['latin'],  // Only Latin characters
})

// File size: ~30KB instead of ~120KB (all subsets)

Preloading

Preload hints ensure fonts load early:

<link rel="preload" href="/fonts/inter.woff2" as="font" type="font/woff2" crossorigin />

CSS Variables

Use CSS variables for flexible theming:

// app/layout.tsx
import { Inter, Roboto_Mono } from 'next/font/google'

const inter = Inter({ subsets: ['latin'], variable: '--font-sans' })
const robotoMono = Roboto_Mono({ subsets: ['latin'], variable: '--font-mono' })

export default function RootLayout({ children }) {
  return (
    <html className={`${inter.variable} ${robotoMono.variable}`}>
      <body>{children}</body>
    </html>
  )
}

/* globals.css */
body {
  font-family: var(--font-sans), sans-serif;
}

code {
  font-family: var(--font-mono), monospace;
}

Common Fonts

vinext provides named exports for popular Google Fonts:

import {
  Inter,
  Roboto,
  Roboto_Mono,
  Open_Sans,
  Lato,
  Poppins,
  Montserrat,
  Source_Code_Pro,
  Noto_Sans,
  Raleway,
  Ubuntu,
  Nunito,
  Playfair_Display,
  Merriweather,
  PT_Sans,
  Fira_Code,
  JetBrains_Mono,
  Geist,
  Geist_Mono,
} from 'next/font/google'

For other fonts, use the dynamic accessor:

import googleFonts from 'next/font/google'

const dmSans = googleFonts.DM_Sans({ subsets: ['latin'] })

Limitations

Module-level only: Font loaders must be called at module level (not inside components).

// ✅ Correct
const inter = Inter({ subsets: ['latin'] })

export default function Page() {
  return <div className={inter.className}>Text</div>
}

// ❌ Wrong
export default function Page() {
  const inter = Inter({ subsets: ['latin'] })
  return <div className={inter.className}>Text</div>
}

Local font paths: Must be relative to the file where localFont is called.

Build-time download: Google Fonts are fetched at build time. Network issues during build will cause failures.

Source

View Google Fonts source → View local fonts source → Implementation:

/home/daytona/workspace/source/packages/vinext/src/shims/font-google.ts
/home/daytona/workspace/source/packages/vinext/src/shims/font-local.ts

CLI

Module Shims

Configuration

Cloudflare

Google Fonts

Import

Basic Usage

API Reference

Return Value

Examples

Multiple Fonts

With Tailwind CSS

Single Page

Local Fonts

Import

Basic Usage

API Reference

Examples

Variable Font

Multiple Weights and Styles

Self-Hosting Google Fonts

Performance

Zero Layout Shift

Subsetting

Preloading

CSS Variables

Common Fonts

Limitations

Source

​Google Fonts

​Import

​Basic Usage

​API Reference

​Return Value

​Examples

​Multiple Fonts

​With Tailwind CSS

​Single Page

​Local Fonts

​Import

​Basic Usage

​API Reference

​Examples

​Variable Font

​Multiple Weights and Styles

​Self-Hosting Google Fonts

​Performance

​Zero Layout Shift

​Subsetting

​Preloading

​CSS Variables

​Common Fonts

​Limitations

​Source

Google Fonts

Import

Basic Usage

API Reference

Return Value

Examples

Multiple Fonts

With Tailwind CSS

Single Page

Local Fonts

Import

Basic Usage

API Reference

Examples

Variable Font

Multiple Weights and Styles

Self-Hosting Google Fonts

Performance

Zero Layout Shift

Subsetting

Preloading

CSS Variables

Common Fonts

Limitations

Source