Just a script for optimizing PDFs in a folder and outputing them into a new folder using GhostScript
The script uses the wonderful tqdm library to display a progress bar during execution, which can be installed with the command:
pip install tqdm
Run main.py with the source and destination folders like so
Note: Folder paths can be relative to where the script is being run
python3 main.py --inFolder source/Folder/Path --outFolder dest/folder/path
--rename- add "_Optimized" to the end of the destination filenames
--stats- print out the percentage that each file has been reduced at the end of the job
--compression-level- set the level of compression, range is from 0 (lowest) to 4 (highest)
--file-dialogue- Open a file dialogue to pick input and output folders rather than using command line arguments
- Two windows will open in succession, the first one being to pick the input folder, and the second for the output folder, the script will continue as normal after both folders have been selected
--image-res- manually set image resolution in pixel dpi
Example command with all flags
python3 main.py --inFolder source/Folder/Path --outFolder dest/folder/path --rename --stats --compression-level 3 --image-res 150
Or like if you wish to pick folders with a file dialogue
python3 main.py --file-dialogue --rename --stats --compression-level 3 --image-res 150
This script leverages the GhostScript command line utility, and pythons multiprocessing module for parallelization
The script compiles a list of all pdf files in the folder given by --inputFolder, and use the multiprocessing.Pool class to create a process pool with as many processes and multiprocessing.cpu_count() returns on the machine running the script
The process pool will then run the optimize() function on each file, running the GhostScript command