This UIImage extension for resize image to be fit for WhatsApp sticker

WPStickerUImage.swift

// This UIImage extension for resize image to be fit for WhatsApp sticker
// By Faris Albalawi


// Stickers must be exactly 512x512 pixels.
// Tray image must be exactly  96x96 pixels.

// TO MAKE TRY IMAGE 
let tryayImage = yourImage!.StickerSize96()

// TO MAKE STICKER IMAGE
let stickerImage = yourImage!.StickerSize512()


extension UIImage {
    func pngFrom() -> UIImage {
        let imageData = self.pngData()
        let imagePng = UIImage(data: imageData!)
        return imagePng!
       }
    
}



extension UIImage {
  func resizeImage(targetSize: CGSize) -> UIImage {
    let size = self.size
    let widthRatio  = targetSize.width  / size.width
    let heightRatio = targetSize.height / size.height
    let newSize = widthRatio > heightRatio ?  CGSize(width: size.width * heightRatio, height: size.height * heightRatio) : CGSize(width: size.width * widthRatio,  height: size.height * widthRatio)
    let rect = CGRect(x: 0, y: 0, width: newSize.width, height: newSize.height)

    UIGraphicsBeginImageContextWithOptions(newSize, false, 1.0)
    self.draw(in: rect)
    let newImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    return newImage!
  }
}


extension UIImage {
    func imageWithInsets(insets: UIEdgeInsets) -> UIImage? {
        UIGraphicsBeginImageContextWithOptions(
            CGSize(width: self.size.width + insets.left + insets.right,
                   height: self.size.height + insets.top + insets.bottom), false, self.scale)
        let _ = UIGraphicsGetCurrentContext()
        let origin = CGPoint(x: insets.left, y: insets.top)
        self.draw(at: origin)
        let imageWithInsets = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return imageWithInsets
    }
}


extension UIImage {
       // sticker image 512 * 512
    func StickerSize512() -> UIImage? {
        let imageView = UIImageView(image: imageWithInsets(insets: UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)))
         imageView.contentMode = .scaleAspectFit
         imageView.frame = CGRect(x: 0, y: 0, width: 512, height: 512)
         let image = imageView.asImage()
         let img = image.pngFrom()
         let newImage = img.resizeImage(targetSize: CGSize(width:512, height: 512))
         return newImage
        
      }
    
    // resize trayImage 96 * 96
    func StickerSize96() -> UIImage? {
        let imageView = UIImageView(image: imageWithInsets(insets: UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)))
         imageView.contentMode = .scaleAspectFit
         imageView.frame = CGRect(x: 0, y: 0, width: 96, height: 96)
         let image = imageView.asImage()
         let img = image.pngFrom()
         let newImage = img.resizeImage(targetSize: CGSize(width:96, height: 96))
         return newImage
        
      }
}

extension UIView {
       func asImage() -> UIImage {
        let renderer = UIGraphicsImageRenderer(bounds: bounds)
        return renderer.image { rendererContext in
            layer.render(in: rendererContext.cgContext)
        }
    }
}