We are looking into creating a plugin that does lossless minifying of File manager images on upload and/or on the Editor's request.
The great Visual Studio extension Image Optimizer uses SmushIt and PunyPNG. I've also seen that SmushIt exists as a Wordpress plugin. So those two seem like good choices.
Has anyone done something similiar?
Allan blogged about using a workflow to resize an image on upload so this could be an approach to consider:
Take a look at my blog: Faster EPiServer sites – image optimization.
Thanks! We will give Fredrik's scheduled task a try first!