Downloads all files of messages of your Slack (workspace) JSON export. Each channel will be processed and a separate folder (default=files) gets created containing all files.
This helps to back up all your files when if you are going to close your Slack account. The script checks if the file was already downloaded, so you can also use it to create incremental backups.
# Start file downloads with export directory
./slack-files-download.py ~/Downloads/SlackExport/
# Start file downloads with alternate output dir
./slack-files-download.py --output export ~/Downloads/SlackExport/
# Display help message
./slack-files-download.py -h