Download Black Bird Image Optimizer for Windows

Black Bird Image Optimizer is a commercial tool that is able to optimize the size of PNG and JPG files. Although the tool uses color quantization, specifically harnessing compression tools pngquant and jpegtran. With these it is able to reduce the number of colors in an image, while maintaining the overall visual construction. The resulting image does look very similar to the original, however it does not produce lossless compression.