in python I use pywand:

    def generate_with_wand(self, wand_img: WandImage):
        # create stripped down version of our image:
        wand_img.strip()
        wand_img.auto_orient()
        wand_img.compression_quality = 90

        thumb = wand_img.clone()
        thumb.transform(resize=self.size)
        thumb.save(filename=str(self.get_output_path()))