This is how to convert a SwiftUI View to Base 64 format.

SwiftUIToBase64.swift

import SwiftUI

struct SwiftUIToBase64View: View {
    @Environment(\.displayScale) var displayScale

    var body: some View {
        Text("Hello, World!")
    }
    
    @MainActor private func ecode() -> String? {
        let renderer = ImageRenderer(content: Text("Hello"))
         // Make sure to use the correct display scale for this device, so that the image can render with good resolution.
        renderer.scale = displayScale
        return renderer.uiImage?.jpegData(compressionQuality: 1.0)?.base64EncodedString()
    }
}