public function jpegoptim($quality = null)
    {
        return $quality === null ? $this->addItem('q', 'jpegoptim') : $this->addItem('q', 'jpegoptim', $quality);
    }
public function jpegoptim($quality = null)
    {
        return $quality === null ? $this->addItem('q', 'jpegoptim') : $this->addItem('q', 'jpegoptim', $quality);
    }
public function jpegoptim ( $ quality = null ) { return $ quality === null ? $ this -> addItem ( 'q' , 'jpegoptim' ) : $ this -> addItem ( 'q' , 'jpegoptim' , $ quality ) ; }
Turns on jpegoptim, which greatly reduces the size of jpeg images.

@param int $quality maximum quality

@return \self
Turns on jpegoptim which greatly reduces the size of jpeg images .