For those interested we implemented from scratch a subset of these commands as a REST API service available to call at request from any programming language.
Looks cool though! I would love a product that behaves like a proxy/CDN for images and does some on-demand resizing/filtering.
Backed by Imagemagick. We usually run it behind a CDN like Akamai or Cloudfront but you can also use Apache httpd’s built-in file caching.