Free PDF Compressor - Free PDF Compressor removes duplicate PDF objects and employs new compression features in recent...
FastStone Photo Resizer - Convert and Rename images in batch mode Support JPEG, BMP, GIF, PNG, TIFF and JPEG2000
Wondershare PDFelement - All-in-one PDF editor
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.
WeCompress - Compress PDF, PPT, Word, Excel, PNG, TIFF & JPEG files free online.
ImageMagick - ImageMagick is a software suite to create, edit, and compose bitmap images.