Image to WebP converter

##Image to WebP converter v0.1 by Kurobyte
##Usage
##Download google compresion tool https://developers.google.com/speed/webp/download and unzip it
##place this script in the unziped folder, and drag'n drop images on it.
import sys, os;
from subprocess import call;

#Config#
execPath = os.path.dirname(sys.argv[0]);
compresion = 90; #Quality rate values between [0 , 100]# "-q", str(compresion),
specificFolder = "\\webp"; #Leve it empty "" if you don't want to create a output dir for the images.
validFormats = ['.png', '.jpg', '.jpeg'];


def main(images):
    for img in imatges:
        path, extension = os.path.splitext(img);
        path = os.path.dirname(img);
        filename = (os.path.basename(img)).replace(extension, '');

        if extension.lower() in validFormats :
            output = path+specificFolder;
            if not (os.path.exists(output)):
                os.mkdir(output);

            call([execPath+"\\cwebp.exe", "-lossless", "-quiet", img,
             "-o", output+"\\"+filename+".webp"],
              shell=True);
            print filename+" | Converted to '.webp'";
        else:
            print 'Image format not supported';


imatges = [];
for i in range(1, len(sys.argv)):
    imatges.append(sys.argv[i]);

main(imatges);
raw_input("Completed\r\nPres any key to continue.");