# init(url:content:placeholder:) Loads and displays a modifiable model from the specified URL using a custom placeholder until the model loads. ``` nonisolated init(url: URL, @ViewBuilder content: @escaping (ResolvedModel3D) -> Model, @ViewBuilder placeholder: @escaping () -> Placeholder) where Content == Model3DPlaceholderContent, Model : View, Placeholder : View ``` ## Parameters `url` The URL of the model to display. `content` A closure that takes the loaded model as an input, and returns the view to show. You can return the model directly, or modify it as needed before returning it. `placeholder` A closure that returns the view to show until the load operation completes successfully. ## Discussion Until the model loads, `Model3D` displays the placeholder view that you specify. When the load operation completes successfully, `Model3D` updates the view to show content that you specify, which you create using the loaded model. For example, you can show a green placeholder, followed by a scaled version of the loaded model: ```swift let url = URL(string: "https://example.com/robot.usdz")! Model3D(url: url) { model in model.resizable() } placeholder: { Color.green } ``` If the load operation fails, `Model3D` continues to display the placeholder. To be able to display a different view on a load error, use the [`init(url:transaction:content:)`](/documentation/RealityKit/Model3D/init(url:transaction:content:)) initializer instead. --- 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)