mozilla/zamboni — pull request #445 by apapirovski (2012-10-10 20:58:24+00:00)
Title: Lossless optimization of all the images

Not sure if this is actually of interest, but I optimized full _img_ folder (except for anything that was titled "originals") with OptiPNG, PNGCrush, AdvPNG, PNGOut, JPEGOptim, and jpegtran.

The savings on the whole are between 20-30% or so, some individual files (and sometimes even whole folders) were reduced by up to 60-80% in size. The savings are quite substantial.