Photo Size Optimizer - Photo Size Optimizer for Mac is a powerful photo resizer and optimizer to optimize photos by 80% ~ 20%.
FastStone Photo Resizer - Convert and Rename images in batch mode Support JPEG, BMP, GIF, PNG, TIFF and JPEG2000
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.
Fast Image Resizer - adionSoft Fast Image Resizer is a small tool to quickly resize a batch of pictures. Features
Phatch - Phatch = Photo & Batch!