from PIL import Image
import os
import sys

TARGET = (480, 800)
INPUT_DIR = sys.argv[1] if len(sys.argv) > 1 else "."
EXTENSIONS = {".jpg", ".jpeg", ".png", ".webp", ".bmp"}

for filename in os.listdir(INPUT_DIR):
    ext = os.path.splitext(filename)[1].lower()
    if ext not in EXTENSIONS:
        continue

    path = os.path.join(INPUT_DIR, filename)
    img = Image.open(path)

    img.thumbnail(TARGET, Image.LANCZOS)

    img.save(path)
    print(f"{filename}: {img.size}")