Does Resize JPEGs support command-line automation?

Yes. Resize JPEGs has full command-line support. Available options include:

• -f "[file]" - Single file to resize
• -d "[directory]" - Directory to resize
• -x [max width] - Maximum width in pixels
• -y [max height] - Maximum height in pixels
• -r - Resize originals (instead of copies)
• -a - Always resize (even if smaller)
• -c - Close when done
• -p - Show preview
• -s - Include subdirectories
• -e - Retain original file date
• -o "[path]" - Output directory for resized copies
• -t - Maintain aspect ratio