# Display files using Fastboard (/en/realtime-media/whiteboard/build/display-files-and-manage-scenes/scenes/display-files-fast/ios)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

The Agora Fastboard SDK supports inserting and displaying multiple types of files on the whiteboard, such as images, audio and video, and documents. This enables users to quickly share information in compelling ways in order to create an immersive experience.

This page describes how to call the Fastboard SDK's APIs to insert images, present documents, and play audio and video on the whiteboard.

      
  
      
    ## Understand the tech [#understand-the-tech-1]

    Fastboard provides APIs for displaying files in the whiteboard main window or sub-windows.

    ## Prerequisites [#prerequisites-1]

    * Integrate Fastboard in your project and join the room. See [Join the whiteboard room](../../set-up-and-build-your-first-app/get-started-uikit#join-the-whiteboard-room).
    * Prepare publicly accessible asset URLs.
    * Make sure file formats are supported, and enable file conversion before presenting documents.

    ## Project setup [#project-setup-1]

    ### Insert Images [#insert-images-1]

    Fastboard provides the [`insertImg`](/en/api-reference/api-ref/uikit-sdk#nsertimg) method.

    ```swift
    fastRoom.joinRoom() {
        fastRoom.insertImg(
            URL(string: "https://test.aliyuncs.com/cloud-storage/2022-xx/15/e3xxda.png")!,
            imageSize: .init(width: 100, height: 100)
        )
    }
    ```

    ### Play audio and video [#play-audio-and-video-1]

    Fastboard integrates the media player extension and provides the [`insertMedia`](/en/api-reference/api-ref/uikit-sdk#insertmedia) method.

    ```swift
    fastRoom.joinRoom() {
        fastRoom.insertMedia(
            URL(string: "https://test.aliyuncs.com/cloud-storage/2022-xx/15/52xxx37.mp4")!,
            title: "test1.mp4",
            completionHandler: nil
        )
    }
    ```

    ### Present documents [#present-documents-1]

    The Agora Fastboard SDK provides the [`insertStaticDocument`](/en/api-reference/api-ref/uikit-sdk#insertstaticdocument) and [`insertPptx`](/en/api-reference/api-ref/uikit-sdk#insertpptx) methods.

    ```swift
    import UIKit
    import Fastboard
    import Whiteboard

    fastRoom.joinRoom() {
        let jsonStr =
    """
        [{
            "width": 1280,
            "height": 720,
            "conversionFileUrl": "pptx://convertcdn.netless.link/dynamicConvert/3ce728e0954f11ec997c6580ac31fd96/1.slide",
            "preview": "https://convertcdn.netless.link/dynamicConvert/3ce728e0954f11ec997c6580ac31fd96/preview/1.png"
        }]
    """
        let dic = try! JSONSerialization.jsonObject(with: jsonStr.data(using: .utf8)!) as! [[String: Any]]
        let pages = dic.map { item -> WhitePptPage in
            let url = item["conversionFileUrl"] as? String
            let pre = item["preview"] as? String
            let w = item["width"] as? Int
            let h = item["height"] as? Int
            return WhitePptPage(src: url!, preview: pre!, size: .init(width: w!, height: h!))
        }
        fastRoom.insertPptx(pages, title: "My PPT")
    }
    ```

    ## Reference [#reference-1]

    Run the project. You can see the inserted image, media window, or converted document on the whiteboard after the app refreshes.