As I am trying to get most out of the images it does not make much sense to me to work without a visual control mechanism as every image needs different parameters to get most out of it. So, no, at the moment there is no batch tool available.
A WordPress plugin is on my todo list for a loooong time but unfortunately I can't say when it will see the light of day.
Finally back with an absolutely unique feature for the expert mode in the compress-or-die.com JPEG Compressor. From now on you have the possibility to influence the quantization tables with simple controls to a high degree. This feature ... (1/5)