# navigationSubtitle(_:) Configures the view’s subtitle for purposes of navigation, using a string. ``` nonisolated func navigationSubtitle(_ subtitle: S) -> some View where S : StringProtocol ``` ## Parameters `subtitle` The subtitle to display. ## Discussion A view’s navigation subtitle is used to provide additional contextual information alongside the navigation title. On macOS, the primary destination’s subtitle is displayed with the navigation title in the titlebar. On iOS and iPadOS, the subtitle is displayed with the navigation title in the navigation bar. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)