UIImage+Compress
- (UIImage *)compressedImage;

- (CGFloat)compressionQuality;

- (NSData *)compressedData;

- (NSData *)compressedData:(CGFloat)compressionQuality;

- (UIImage *)compressedToSize:(CGSize)size;

- (UIImage *)compressedImageBySize;

- (UIImage*)imageCompressWithSimple:(UIImage*)image scale:(float)scale;

- (UIImage *)image:(UIImage *)image fitInsize:(CGSize)viewsize;