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Swift 4, Xcode 9

extension String { var utfData: Data { return Data(utf8) } var attributedHtmlString: NSAttributedString? { do { return try NSAttributedString(data: utfData,  options: [   .documentType: NSAttributedString.DocumentType.html,   .characterEncoding: String.Encoding.utf8.rawValue ], documentAttributes: nil) } catch { print("Error:", error) return nil } } } extension UILabel { func setAttributedHtmlText(_ html: String) { if let attributedText = html.attributedHtmlString { self.attributedText = attributedText } } } 

Swift 4, Xcode 9

extension String { var utfData: Data { return Data(utf8) } var attributedHtmlString: NSAttributedString? { do { return try NSAttributedString(data: utfData, options: [ .documentType: NSAttributedString.DocumentType.html, .characterEncoding: String.Encoding.utf8.rawValue ],      documentAttributes: nil) } catch { print("Error:", error) return nil } } } extension UILabel { func setAttributedHtmlText(_ html: String) { if let attributedText = html.attributedHtmlString { self.attributedText = attributedText } } } 

//Swift 4, Xcode 9 extension String { var utfData: Data { return Data(utf8) } var attributedHtmlString: NSAttributedString? { do { return try NSAttributedString(data: utfData, options: [ .documentType: NSAttributedString.DocumentType.html, .characterEncoding: String.Encoding.utf8.rawValue ], documentAttributes: nil) } catch { print(error.localizedDescription) return nil } } } extension UITextView { func setHtmlText(_ html: String) { if let attributedText = html.attributedHtmlString { self.attributedText = attributedText } } } 

Swift 4, Xcode 9

extension String { var utfData: Data { return Data(utf8) } var attributedHtmlString: NSAttributedString? { do { return try NSAttributedString(data: utfData, options: [ .documentType: NSAttributedString.DocumentType.html, .characterEncoding: String.Encoding.utf8.rawValue ], documentAttributes: nil) } catch { print("Error:", error) return nil } } } extension UILabel { func setAttributedHtmlText(_ html: String) { if let attributedText = html.attributedHtmlString { self.attributedText = attributedText }  } } 

//Swift 4, Xcode 9 extension String { var utfData: Data? { return self.data(using: .utf8) } var attributedHtmlString: NSAttributedString? { guard let data = self.utfData else { return nil } do { return try NSAttributedString(data: data, options: [ .documentType: NSAttributedString.DocumentType.html, .characterEncoding: String.Encoding.utf8.rawValue ], documentAttributes: nil) } catch { print(error.localizedDescription) return nil } } } extension UITextView { func setHtmlText(_ html: String) { if let attributedText = html.attributedHtmlString { self.attributedText = attributedText } } } 

//Swift 4, Xcode 9 extension String { var utfData: Data { return Data(utf8) } var attributedHtmlString: NSAttributedString? { do { return try NSAttributedString(data: utfData,   options: [   .documentType: NSAttributedString.DocumentType.html,   .characterEncoding: String.Encoding.utf8.rawValue   ], documentAttributes: nil) } catch { print(error.localizedDescription) return nil } } } extension UITextView { func setHtmlText(_ html: String) { if let attributedText = html.attributedHtmlString { self.attributedText = attributedText } } }