Converting image format in clipboard - macOS Python (Copied as PNG, Paste as JPG)

convert-clipboard-image.py

from PIL import Image
import io
import pasteboard

pb = pasteboard.Pasteboard()
pb_image = pb.get_contents(pasteboard.TIFF)
if pb_image:
  image = Image.open(io.BytesIO(pb_image))
  if image.mode == 'RGBA':
    image.load()
    new_image = Image.new('RGB', image.size, (255, 255, 255))
    new_image.paste(image, mask=image.split()[3])
    image = new_image
  data_bytes = io.BytesIO()
  image.save(data_bytes, format='JPEG', quality=90)
  data_bytes = data_bytes.getvalue()
  pb.set_contents(data=data_bytes, type=pasteboard.TIFF)
  print('Converted clipboard image to JPG.')
else:
  print('No image was copied.')