clipboard from png to jpeg

convert_clipboard_png_to_jpeg.py

# /// script
# requires-python = ">=3.12"
# dependencies = [
#     "pillow",
#     "pyobjc-framework-Quartz",
# ]
# ///

from pathlib import Path
from PIL import Image
from io import BytesIO
import AppKit
import sys

# Save PNG from clipboard to JPEG on Desktop
clipboard = AppKit.NSPasteboard.generalPasteboard()
png_data = clipboard.dataForType_(AppKit.NSPasteboardTypePNG)

if not png_data:
    print("No PNG in clipboard.")
    sys.exit(0)  # Stop execution if no PNG is found

else:
    img = Image.open(BytesIO(bytes(png_data))).convert("RGB")
    jpeg_path = Path.home() / "Desktop" / "clipboard_image.jpeg"
    img.save(jpeg_path, "JPEG", quality=70)
    print(f"Saved JPEG to {jpeg_path}")

# Copy JPEG from Desktop to clipboard
if not jpeg_path.exists():
    print(f"File not found: {jpeg_path}")
else:
    with open(jpeg_path, "rb") as f:
        jpeg_data = f.read()
    ns_data = AppKit.NSData.dataWithBytes_length_(jpeg_data, len(jpeg_data))
    clipboard.declareTypes_owner_(["public.jpeg"], None)
    clipboard.setData_forType_(ns_data, "public.jpeg")
    print(f"Copied JPEG from {jpeg_path} to clipboard")