The concept of this application is very unique as you can use this application to shorten / compress the size of a file.
The application is very user friendly, there are options to customize and utilize this application to its full potential . And although it says that the application needs to be purchased it is absolutely free, I am using this for like ten years now.
Installation process is simple as well, just download from the internet and install.
You can compress your files with this application and also split a file which may be too large for you to carry, and so you can use the split option to split the file in to two or more files and then reattach later.
This is a very important must have application.