JFSplit is an application that helps you split files into multiple chunks by size, calculate CRC-32 checksum to determine integrity, target number, and join them back together. This program works on different operating systems other than Windows and specially designed to only work with Java Runtime Environment. It is possible to carry around on a thumb drive from other PCs to access and no need to install. There is an Output that can be different from the input and you can select files of any size or type. The user can choose to split the first or last custom number parts or the entire file. There are two methods here like manual joining can be done by loading all parts and automatically detecting all requirements with the app. The application has a checksum calculator to determine the integrity of files. JFSplit is a powerful program that is designed to split large files in chunks of configurable number and size.