JFSplit

Although disk space size is less of a concern nowadays, chances are you want, or need to split a large file into multiple chunks. This can easily be done with an archiver, but anyone can build the original target file. For more security, JFSplit can help you split files into multiple parts according to different criteria like size, or number of chunks.

First of all, the application is designed to only work with Java Runtime Environment, so it needs to be installed on the target PC for the application in question to work. This also makes it work on different operating systems other than Windows. What’s more, no installation is involved, thus making it possible to carry around on a thumb drive to access from other computers as well.

Just as the name clearly points out, one of the main features is to split files into multiple chunks. Adding a file doesn’t impose any restrictions, so you’re free to select files of any type, or size. Output can be different from the input, which comes in handy if you don’t want to lose any of the generated parts.

Splitting conditions are pretty decent, in the sense that you can split either by size, or number of parts. Size comes with a drop-down menu to specify target value either in bytes, kilobytes, megabytes, or gigabytes. Moreover, you can choose to split the entire file, or only the first or last custom number parts.

Needless to say that you require all parts to perform the join operation. Two methods can be used here. The automatic join process requires any of the parts, with the application automatically detecting all the other requirements, given they’re in the same folder. On the other hand, manual joining can be done by loading all parts yourself.

Last but not least, JFSplit comes with a checksum calculator to help you determine the integrity of files. Unfortunately, it only uses one algorithm, namely the CRC-32, and you can only use this feature to calculate the checksum, without the possibility to compare to an existing code.

To sum it up, JFSplit is a powerful application which can help you split large files in chunks of configurable size, and number. Joining can either be done automatically, or manually, while the checksum calculator helps you determine the integrity of target files, given you already have the original checksum code.