FILEminimizer Pictures - FILEminimizer Pictures compresses JPEG photos, TIFF, BMP and PNG images and pictures by up to 98%.
PicResize - PicResize is a very different type of software which provides many facilities over different function regarding a picture, and cropping, resizing, and, editing them on the best platform for free.
TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!
FastStone Photo Resizer - Convert and Rename images in batch mode Support JPEG, BMP, GIF, PNG, TIFF and JPEG2000
Compressor.io - Optimize and compress your images online. Compressor is a lossy and lossless photo compression tool.
Ralpha Image Resizer - High-speed image batch conversion tool