PhotoSizer is a Free Batch Image Resizer or picture editor that can be made to run from a Portable USB device. It supports JPG, PNG, GIF, TGA and BMP image formats. Oher key features include resizing by percentage or width x height, change image quality, flip or rotate images, conversion to black and white or negative. Moreover, FotoSizer is available in English, French, German, Spanish, Italian, Turkish and Portuguese (Brazilian).
FotoSizer – Batch Image Resizer Screenshot
Authors Website: FotoSizer.com
How to Make FotoSizer Portable: