---
title: sourceApplicationBundleIdentifier
framework: BrowserKit
role: symbol
role_heading: Instance Property
platforms: [iOS 26.4+, iPadOS 26.4+]
path: browserkit/bebrowserdata/sourceapplicationbundleidentifier
---

# sourceApplicationBundleIdentifier

The source browser app’s bundle identifier.

## Declaration

```swift
var sourceApplicationBundleIdentifier: String? { get }
```

## See Also

### Identifying the source browser app

- [sourceApplicationLocalizedName](browserkit/bebrowserdata/sourceapplicationlocalizedname.md)