StringExtension.swift

extension String {
    func asHtmlAttributedString() -> NSAttributedString? {
        guard let htmlData = self.data(using: String.Encoding.utf8, allowLossyConversion: true) else { return nil }
        let options: [NSAttributedString.DocumentReadingOptionKey: Any] = [
            .documentType: NSAttributedString.DocumentType.html,
            .characterEncoding: String.Encoding.utf8.rawValue
        ]

        return try? NSAttributedString(data: htmlData, options: options, documentAttributes: nil)
    }
}