This Python script will tinify all the PNG and JPG images in a folder recursively.

You need Python 3 installed, and these modules:

• os
• time
• glob
• logging
• argparse
• tinify

All of these should already be installed since they are fairly standard, except for tinify. To install tinify, run pip install --upgrade tinify in a command line.

The script is fairly simple.

Usage: tinifyImg.py [-h] -f FOLDER -k KEY [-d NUMBER_OF_DAYS] [-v] [--dry_run]

Arguments:

• -h, --help: show this help message and exit
• -f FOLDER, --folder FOLDER: Folder in which to look for images (required)
• -k KEY, --key KEY: API key for Tinify service (required)
• -d NUMBER_OF_DAYS, --days NUMBER_OF_DAYS: Only process the images that have been modified in the last NUMBER_OF_DAYS days (optional)
• --dry_run: Will run the script but won't perform any compression
• -v, --verbose: Will show complete output

The API key can be requested from the TinyPNG website.

Compress all the images in C:\Images that have been created or modified in the last 8 days:

python tinifyImg.py -f C:\Images -k dummyapikey123456789abcdefghijkl -d 8

Compress all the images in C:\Images\ToCompress:

python tinifyImg.py -f C:\Images\ToCompress -k dummyapikey123456789abcdefghijkl

Check how many images would be compress if we wanted to compress all the images in C:\Images\ToCompress:

python tinifyImg.py -f C:\Images\ToCompress -k dummyapikey123456789abcdefghijkl --dry_run

This is the kind of command output you can expect:

python tinifyImg.py -f C:\Images\ToCompress -k dummyapikey123456789abcdefghijkl --dry_run
[INFO] Running tinify script for images in a folder
[INFO] This is a dry run
[INFO] Remaining compressions: 428
[INFO] 36 images to compress, total size is 794.5 kb
[INFO] No errors during processing
[INFO] Total size is 794.5 kb, 0.0% lighter
[INFO] Remaining compressions: 428

The script has an hardcoded limit of 500 compressions per month, which corresponds to the free plan of TinyPNG.

This is free and unencumbered software released into the public domain. See LICENSE file for more information.