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# openWindow(with:completionHandler:)

Opens a new window with the desired webpage.

```
class func openWindow(with url: URL, completionHandler: (@Sendable (SFSafariWindow?) -> Void)? = nil)
```

## Parameters

`url`

The URL to navigate to. The URL scheme must be `http` or `https`.

`completionHandler`

A block to call when the URL is loaded in a new window.

## Discussion

> Important:
> You can call this method from synchronous code using a completion handler, as shown on this page, or you can call it as an asynchronous method that has the following declaration:
> 
> ```swift
> class func openWindow(with url: URL) async -> SFSafariWindow?
> ```
> 
> For information about concurrency and asynchronous code in Swift, see <doc://com.apple.documentation/documentation/Swift/calling-objective-c-apis-asynchronously>.

---

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