This is imgsizer, initially packaged for Debian by Lars Wirzenius <liw@iki.fi>.
The current Debian maintainer is Peter S. Galbraith <psg@debian.org>

It was downloaded from http://www.catb.org/~esr/imgsizer/imgsizer-2.5.tar.gz
It's listed at:        http://www.catb.org/~esr/software.html#imgsizer

Copyright:
 Imgsizer by Eric S. Raymond <esr@thyrsus.com>
 Copy, use, and redistribute freely, but don't take my name off it and
 clearly mark an altered version.  Fixes and enhancements cheerfully 
 accepted.