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epub shrink

Setup

Using pipenv shell

https://stackoverflow.com/a/49867443/2159808

$ pipenv install
$ pipenv shell

By hand

$ pip install Pillow

Usage

Reduce image quality

$ python epub-shrink/app.py input_file.epub output_file.epub --jpeg-quality=25

Decrease image size percentwise and cap resulting image size

$ python epub-shrink/app.py input_file.epub output_file.epub --image-resize-percent=60 --image-max-width=1024

Cap image size

$ python epub-shrink/app.py input_file.epub output_file.epub --image-max-width=1024