fonts config plugin

Use Expo Config Plugin for Font Loading

Use the expo-font config plugin to embed fonts at build time instead of useFonts or Font.loadAsync. Embedded fonts are more efficient.

Incorrect (async font loading):

function App() {
  const [fontsLoaded] = useFonts({
    'Geist-Bold': require('./assets/fonts/Geist-Bold.otf'),
  })

  if (!fontsLoaded) {
    return null
  }

  return (
    
      Hello
    
  )
}

Correct (config plugin, fonts embedded at build):

// app.json
{
  "expo": {
    "plugins": [
      [
        "expo-font",
        {
          "fonts": ["./assets/fonts/Geist-Bold.otf"]
        }
      ]
    ]
  }
}

function App() {
  // No loading state needed—font is already available
  return (
    
      Hello
    
  )
}

After adding fonts to the config plugin, run npx expo prebuild and rebuild the native app.

Reference: Expo Font Documentation