# fonts.customFonts.ttfUrl

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

- Type: `string`
- Page: https://kernstra.com/docs/web-sdk/config/fonts/customfonts-ttfurl

URL to a TTF file (fetched on demand). The file must be at most 24 MB and served as font bytes (an HTML response is refused); serve it with CORS headers when it is on another origin.

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