Objective-C code for scaling an image and trimming the filesize down for upload

ScaleImage

- (UIImage *)resizedImageForUpload:(UIImage *)image
{
    CGSize originalSize = image.size;
    CGSize targetSize = CGSizeMake(200, 200);
    CGSize adjustedSize = targetSize;
 
    // Scale image by our targetSize (200 x 200)
    if (originalSize.width > targetSize.width && originalSize.width > originalSize.height) {
        adjustedSize.width = originalSize.width * (targetSize.height / originalSize.height);
        adjustedSize.height = targetSize.height;
    } else if (originalSize.height > targetSize.height && originalSize.height > originalSize.width) {
        adjustedSize.width = targetSize.width;
        adjustedSize.height = originalSize.height * (targetSize.width / originalSize.width);
    }
 
    // Find the best x and y position to center image vertically & horizontally
    CGRect rect = CGRectMake(0, 0, adjustedSize.width, adjustedSize.height);
    if (adjustedSize.width > targetSize.width) {
        rect.origin.x = (targetSize.width - adjustedSize.width) / 2;
    } else if (adjustedSize.height > targetSize.height) {
        rect.origin.y = (targetSize.height - adjustedSize.height) / 2;
    }
 
    // Final image is 200x200 (scaled image will be clipped)
    UIGraphicsBeginImageContextWithOptions(targetSize, NO, [UIScresle.en mainScreen].scale);
    [image drawInRect:rect];
    UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
 
    return resizedImage;
}