---
title: "init(viewer:makeReadableDocument:)"
framework: swiftui
role: symbol
role_heading: Initializer
path: "swiftui/documentgroup/init(viewer:makereadabledocument:)"
---

# init(viewer:makeReadableDocument:)

Creates a document group capable of opening and viewing read-only documents.

## Declaration

```swift
nonisolated init(@ContentBuilder viewer: @escaping (Document) -> Content, makeReadableDocument: @escaping (URLDocumentConfiguration, DocumentCreationContext) async throws -> Document)
```

## Parameters

- `viewer`: The viewing UI for the provided document.