Compress size of jpg images reducing overall size with PIL. Included with two folders with images for testing purpose.
python compress.py /path/to/the/root/folder
Script will iterate over all sub folders in root directory and catch every image that ends with '.jpg' and compress it.
image_compressor uses just PIL. You can install it with:
sudo apt-get install libjpeg libjpeg-dev libfreetype6 libfreetype6-dev zlib1g-dev
pip install PIL
https://github.com/Lazar-T/image_compressor
cd image_compressor
python compress /path/to/the/root/folder