You can use NSAttributedString to change this (Swift 4 example):
let title:String = "Your text" let textParagraph:NSMutableParagraphStyle = NSMutableParagraphStyle() textParagraph.lineSpacing = 10.0 textParagraph.maximumLineHeight = 12.0 let attribs = [NSAttributedStringKey.paragraphStyle:textParagraph] let attrString:NSAttributedString = NSAttributedString.init(string: title, attributes: attribs) titleTextField.attributedStringValue = attrString
source share