I'd like to have a plugin for the GIMP that resizes by area, not by width/height or percentage, so that images with different aspect ratios come out looking nice together. I have to do it manually at the moment. This link describes the situation perfectly:
http://www.chriscollinsdesign.co.uk/resize-to-area/index.html
Unfortunately, that plugin is for photoshop :(
Resize by Area Script
Hi-
I wrote this up:
http://ffaat.pointclark.net/incoming/scripts/resizebyarea.scm
It shows up under Image->Resize By Area...
You basically specify an equivalent width and height, and it resizes the image to have the same area as that, using your default scaling method.
-Rob A>