---
title: "zoomFactor(for:)"
framework: webkit
role: symbol
role_heading: Instance Method
path: "webkit/wkwebextensiontab/zoomfactor(for:)"
---

# zoomFactor(for:)

Called when the zoom factor of the tab is needed.

## Declaration

```swift
optional func zoomFactor(for context: WKWebExtensionContext) -> Double
```

## Parameters

- `context`: The context in which the web extension is running.

## Discussion

Discussion Defaults to pageZoom of the tab’s web view if not implemented.

## See Also

### Related Documentation

- [setZoomFactor(_:for:completionHandler:)](webkit/wkwebextensiontab/setzoomfactor(_:for:completionhandler:).md)