$ npm install -g image-cli

$ image a.jpg

$ image [Drag and Drop an image here from your file system]

$ image http://remote/path/to/image.jpg

# if a given image url is not ended with .xxx but something like .xxx:large
# you can specific the extension you actually need using `-e/--ext`:
$ image http://path/to/a.jpg/large -e .jpg

# use proxy to download images behide firewall
# for example you are using lantern to bypass firewall
$ image http://blocked-website.com/xxx.jpg -p localhost:8787
# or system proxy, http_proxy or https_proxy
$ http_proxy=localhost:8787 image http://blocked-website.com/xxx.jpg