When you need to upload one file for an application but they only allow file uploads of 1Mb, you need to compress the pdf to make is smaller.

When you need to upload images to your website the smaller they are the quicker your page will loadi.  Saving the 10 seconds of download time might make the difference between somebody staying to see what you offer and lost traffic.

When you need to upload one file for an application but your have the pages that you need saved as multiple pdf's, you need to merge pdf's to one file.

 The Image Color Extract tool pulls the most common colors out of an image file.