ImageMagick:
- ImageMagick
- Simple ImageMagick installer for Mac
- GraphicsMagick (a fork of ImageMagick)
Grunt:
- Getting started with Grunt
- Grunt for People Who Think Things Like Grunt are Weird and Hard
- Generate multi-resolution images with Grunt
- grunt-responsive-images plugin for generating multiple images
- grunt-respimg plugin for a responsive image workflow
Files used in scripting examples:
- convert.sh (includes instructions)
- Gruntfile.js
- Imager.js: responsive image loading developed for BBC News
Image processing tools:
- ImageOptim (Mac only)
- Trimage - Similar to ImageOptim (Windows, Mac, Linux)
- ImageAlpha
(recommended by Udacity)