# fonts.download

Part of [Fonts](https://kernstra.com/docs/web-sdk/config/fonts) in the Kernstra Web SDK 1.0.0 configuration reference.

- Type: `boolean`
- Default: `true`
- Page: https://kernstra.com/docs/web-sdk/config/fonts/download

`false` = airgapped mode, no font downloads: the standard-14 fonts, fonts embedded in the document, and `customFonts` registered with `ttfBytes` keep working with zero network access; loading any other font — a bundled one, or a custom font registered by URL — rejects with a descriptive error.

```ts
// Airgapped deployment — no font downloads at all
fonts: {
  download: false,
}
```

Web page: https://kernstra.com/docs/web-sdk/config/fonts/download