PNG to JPG 변환기

function convertPngToJpg(imgElement, quality = 0.9) {
  const canvas = document.createElement('canvas');
  canvas.width = imgElement.naturalWidth;
  canvas.height = imgElement.naturalHeight;
  const ctx = canvas.getContext('2d');
  // 투명 배경을 흰색으로 채우기
  ctx.fillStyle = '#FFFFFF';
  ctx.fillRect(0, 0, canvas.width, canvas.height);
  ctx.drawImage(imgElement, 0, 0);
  return canvas.toDataURL('image/jpeg', quality);
}

from PIL import Image

def png_to_jpg(input_png: str, output_jpg: str, quality: int = 90):
    with Image.open(input_png) as img:
        # RGBA(투명)인 경우 RGB로 변환하며 흰 배경 합성
        rgb_img = Image.new("RGB", img.size, (255, 255, 255))
        if img.mode in ("RGBA", "LA"):
            rgb_img.paste(img, mask=img.split()[-1])
        else:
            rgb_img.paste(img)
        rgb_img.save(output_jpg, "JPEG", quality=quality)

png_to_jpg("input.png", "output.jpg")