I've created a small npm module that makes it easy to download placeholder images from public domain sources.

See on Github

See on npm

Installing

npm install -g spaceholder

Usage

spaceholder
# Downloads 1 image (1024x768px) into current directory

spaceholder -n 100
# Downloads 100 images into current directory

spaceholder -s 800x600
# Downloads 1 image (800x600px) into current directory

spaceholder -n 50 -s 800x600 -p LoremPixel
# Downloads 50 images (800x600px) from LoremPixel into current directory
# If no --provider / -p is specified, each image is downloaded from a random provider