Resizing images

Posted on Sun 12 April 2020 in Programming

For the my other blog about models and hobby, I frequently need to resize a batch of images. Using ImageMagik is possible, but after a couple images it become boring and time consuming.

So, being stuck at home, I came up with a small python script which use the Python Image Library (in the Pillow fork) and the python-resize-image module.

The script is really simple and has the new size hardcoded to 1024x768, but for now it does what I need

# This project is licensed under the GNU General Public License v3.0
# Copyright (C) 2020 Gianluca Montecchi (gian@grys.it)
#
# A small script to resize all the images in the given directory base on the
# Python Image Library (Pillow) and the resizeimage module

import sys
import os

from PIL import Image
from resizeimage import resizeimage


def usage:
        print("""

Usage:
    blog_resize_images input_dir [output_dir]
    input_dir   -> directory where the original file are located
    output_dir  -> directory where to write the resized files

    """)


if __name__ == "__main__":

    if len(sys.argv) == 1:
        usage()
    if len(sys.argv) == 2:
        INPUT_DIR = sys.argv[1]
    if len(sys.argv) > 2:
        usage()

    files = os.listdir(INPUT_DIR)

    for f in files:
        print("Resizing file: ", f)
        with open(f, "r+b") as FI:
            with Image.open(f) as image:
                cover = resizeimage.resize_contain(image, [1024,768])
                cover = cover.convert("RGB")
                cover.save(f, image.format)

The script is hosted on Gitlab in the myutils repo.

Utility