Since I wrote the initial version of jpgcompressor for titanium, I needed scaling of images as well. The only way to do this in titanium is to overlay an Ti.UI.imageView and grab the picture out. This is neither fast nor clean, and it seems to reduce the quality for some weird reason. Since I figured I’m not the only one facing this problem, I added the feature to jpgcompressor via the scale function. Documentation is available in the example. If there are any problems please let me know, the code is build against the new 1.7.2 version of Titanium but should work with previous versions as well by adjusting the manifest as well as titanium.xconfig.
Code from the sideline 