Convert PNG images to WebP, using Pillow

convert-png-to-webp.py

import os
from PIL import Image
import sys

for root, dirs, files in os.walk(sys.argv[1] if len(sys.argv) > 1 else "."):
    for file in files:
        if file.endswith('.png'):
            png_path  = os.path.join(root, file)
            webp_path = png_path.replace('.png', '.webp')
            
            Image.open(png_path).convert("RGBA").save(webp_path, "WEBP", quality=100)
            print(f"{png_path} -> {webp_path}")
    if not '--recursive' in sys.argv: break