# Previews in Xcode Generate dynamic, interactive previews of your custom views. ## Overview When you create a custom [`View`](/documentation/SwiftUI/View) with SwiftUI, Xcode can display a preview of the view’s content that stays up-to-date as you make changes to the view’s code. You use one of the preview macros — like [`Preview(_:body:)`](/documentation/SwiftUI/Preview(_:body:)) — to tell Xcode what to display. Xcode shows the preview in a canvas beside your code.  Different preview macros enable different kinds of configuration. For example, you can add traits that affect the preview’s appearance using the [`Preview(_:traits:_:body:)`](/documentation/SwiftUI/Preview(_:traits:_:body:)) macro or add custom viewpoints for the preview using the [`Preview(_:traits:body:cameras:)`](/documentation/SwiftUI/Preview(_:traits:body:cameras:)) macro. You can also check how your view behaves inside a specific scene type. For example, in visionOS you can use the [`Preview(_:immersionStyle:traits:body:)`](/documentation/SwiftUI/Preview(_:immersionStyle:traits:body:)) macro to preview your view inside an [`ImmersiveSpace`](/documentation/SwiftUI/ImmersiveSpace). ## Topics ### Essentials ### Creating a preview [`Preview(_:body:)`](/documentation/SwiftUI/Preview(_:body:)) Creates a preview of a SwiftUI view. [`Preview(_:traits:_:body:)`](/documentation/SwiftUI/Preview(_:traits:_:body:)) Creates a preview of a SwiftUI view using the specified traits. [`Preview(_:traits:body:cameras:)`](/documentation/SwiftUI/Preview(_:traits:body:cameras:)) Creates a preview of a SwiftUI view using the specified traits and custom viewpoints. [`Preview(_:traits:arguments:body:)`](/documentation/SwiftUI/Preview(_:traits:arguments:body:)) Creates a group of previews of a parameterized SwiftUI view, varying its inputs over the provided arguments. ### Customizing a preview [`Previewable()`](/documentation/SwiftUI/Previewable()) Tag allowing a dynamic property to appear inline in a preview. [`PreviewModifier`](/documentation/SwiftUI/PreviewModifier) A type that defines an environment in which previews can appear. [`PreviewModifierContent`](/documentation/SwiftUI/PreviewModifierContent) The type-erased content of a preview. ### Creating a preview in the context of a scene [`Preview(_:immersionStyle:traits:body:)`](/documentation/SwiftUI/Preview(_:immersionStyle:traits:body:)) Creates a preview of a SwiftUI view in an immersive space. [`Preview(_:immersionStyle:traits:body:cameras:)`](/documentation/SwiftUI/Preview(_:immersionStyle:traits:body:cameras:)) Creates a preview of a SwiftUI view in an immersive space with custom viewpoints. [`Preview(_:windowStyle:traits:body:)`](/documentation/SwiftUI/Preview(_:windowStyle:traits:body:)) Creates a preview of a SwiftUI view in a window. [`Preview(_:windowStyle:traits:body:cameras:)`](/documentation/SwiftUI/Preview(_:windowStyle:traits:body:cameras:)) Creates a preview of a SwiftUI view in a window with custom viewpoints. ### Building in debug mode [`DebugReplaceableView`](/documentation/SwiftUI/DebugReplaceableView) Erases view opaque result types in debug builds. ### Deprecated [Deprecated](/documentation/SwiftUI/Previews-deprecated) Review deprecated preview symbols and their replacements. --- 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)