ImageMagick in Bash/Console : Not all 'Tricks' necessitate using the word 'Hack' (so lets cool it on that shit ok?)
For many of these, I have created a sort of framework(s) around the standard IM commands to ease in modularization. So quickly do our Im strings vanish from memory or clumsily integrate into a million other things, I'm taking some steps to make them easy to use and share if only in a linux/ubuntu environment.
As well many of these are coded from the start to be able to take multiple file types where applicable, as well 'x' number of them via spaced command line params or selecting large groups of files with the mouse to convert which is often the objective but virtually never coded for in Linux/Bash and virtually unpublished and unpracticed in Dos/Windows. The compression isnt much mystery but this modularization and scaling of input/outputs is a common feature