Kachalka is your favorite tool for downloading images.
Installation
go get -u github.com/nizhib/kachalka
Usage
Usage: kachalka -i <index path> -o <images root>
Options:
-id Id fields. Default is "0".
-url Url field. Default is -1.
-quality Output images quality. Default is 90.
-maxSize Output images size limit. Default is 640.
-resume Resume the last run if any.
-verbose Log the results.
-progress Show progressbar.
-w Concurrent workers. Default is 2*NumCPU.