Converseen is an open source image converter and resizer. It supports more than 100 image formats like DPX, EXR, GIF, JPEG, JPEG-2000, PhotoCD, PNG, Postscript, SVG, TIFF and many others.
Converseen allows you to convert, resize, rotate and flip automatically an unlimited number of images.
With Converseen you can save your time because it can process more than one image with one mouse click!
This software is available for Windows and Linux platforms. I hope you will find this software useful.
You can download Converseen for free here.