# navigation.pinchZoom

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

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

Two-finger pinch on a touchscreen zooms the document, around the point between the fingers, which the document follows as they move — instead of the browser zooming the whole page. A pinch begun while a drawing tool is drawing with the first finger calls that stroke off. Off, pinching is left to the browser; do not add `user-scalable=no` to the viewport meta tag (see [Quick start and the container](https://kernstra.com/docs/web-sdk/guides/container)).

Web page: https://kernstra.com/docs/web-sdk/config/navigation/pinchzoom