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# SFSafariCorrespondingIOSExtensionBundleIdentifier

A string bundle ID that identifies the corresponding content blocker extension or Safari web extension on iOS.

## Discussion

To enable extension syncing for your macOS content blocker extension or Safari web extension, specify the bundle ID of the corresponding iOS content blocker extension or Safari web extension.

Only add this to your `Info.plist` if the bundle ID for your macOS app is different from the bundle ID for your iOS app.

For more information, see <doc://com.apple.documentation/documentation/SafariServices/syncing-safari-web-extensions-across-devices-and-platforms>.

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