Compress your pictures with this tool. WIC - Lossless Image Compressor is a Command Line based software that can compress your pictures. The software is based on advanced GAP (gradient adjusted predictor), context modeling and arithmetic entropic coding.

Usage:
wic.ar.final.exe c|d input_file output_file [filter_param_1] [filter_param_2] [filter_param_3]

By default filter parameters is 65 15 4, you can experiment with it, range is [1..255]

WIC Features:
1. Lossless compression and decompression of BMP images
2. High compression rate (slightly better than JPEG 2000)
3. Good compression and decompression speed

The license of this software is Free, you can free download and free use this image optimizer software.