How can I convert many PNG Images to JPEG all at once?

Question

I'm putting manga images on my psp but it only supports JPEG images and the manga images that I download are in PNG format. It takes so long because I have to open the images one by one in the windows paint and save them to JPEG format. Any help is appreciated and if I need to download a converter or something please give me the link. Thank You.....

Answer 1

http://www.freewarefiles.com/downloads_c...

go here and download this.

when you start it up go into options < save mode and change it to .jpeg if it already isn't set to this. then you can drag all your .png files in and it will convert them all at once