levo - 5:16 pm on Oct 13, 2012 (gmt 0)

First, image size is one of the most common areas that I see slowing down page loads.

For someone with technical knowledge, it should be easier to process/resize (even apply unsharp filter to make them look sharper, strip meta data, compress) with ImageMagick.

Sounds great for a generic service provider, but doing all that on-the-fly should not be the way to go for a serious developer.