Help resizing mages

This is simple trumpet blowing but there is a gem I wrote called
thumbnailer (as in 'gem install thumbnailer') that resizes images into
boxes with out without transparency, it can also scale images down to
a maximum width or height.

The project is here

and the docs can be seen here

At some point I intend to announce that I have written it but there is
so much to be worked on. Requires gd2 and exifr.